Unit 1 How can we become good learners?
SectionB -Self Check
课文重难点讲解
1.I can’t understand spoken English.
【解析】speak→spoke →spoken v说
【注】部分动词的过去分词也可做该词的形容词：
spoken 口语的broken 坏掉的written 写作的
Reading aloud is good for your _____________(speak) English.
spoken English 英语口语written English 书面英语
speaking skills 口语技巧an English-speaking country 一个说英语的国家【辨析】speak/talk/say/tell
(1) 说某种语言用speak speak English 说英语
(2) 与某人交谈用talk talk with sb.= talk to sb. 与某人交谈
(3) 强调说话内容用say say it in English 用英语说
(4) 告诉某人用tell tell sb. to do sth 告诉某人做某事
【记】He wants to improve his __________ English, by ________English with native ____________.(speak)
①Can you understand ________(speak) English?
( )②______ well is very useful to us all.
A. Speak English
B. Speaking English
C. Spoken English
D. Speaks
【重庆中考】—The radio ______ that there will be another heavy rain in Guangdong.
—Too bad. It has rained for the whole week.
A. tells
B. talks
C. says
D. speaks
2.I don’t know how to increase my reading speed
【解析】“疑问词+动词不定式”作宾语
注：what to do 后不需要跟宾语how to do 后必须跟宾语
【拓展】“疑问词+动词不定式”结构：
know（知道），tell(告诉) wonder（想知道）ask(问) find out (发现) learn (学会) +what , which, when, where, how +
动词不定式
（to do）
①I don’t know how _______(use) commas.
( )②—We can use QQ to communicate with each other online.
—Good. Will you please show me ___?
A. which to use
B. how to use it
C. what to use
D. where to use it
3. I make mistakes in grammar
【解析】mistake→mistook →mistaken v错误
(1) make mistakes 放错make mistakes in在某方面放错
(2) mistake …for… 把…误认为… (3) by mistake 错误地
【记】Yesterday I ____________（放错误），I_________ Mr. Wang ___ Mr. Zhang（把……误认为），and said hello to Mr. Wang ___________(错误地). ( ) ①My brother often makes mistakes _____ grammar.
A. of
B. by
C. at
D. in
( )②He often ____ mistakes in spelling.
A. takes
B. makes
C. has
【make短语】:
make the bed 整理床铺make face 做鬼脸make a living 谋生make friends 交朋友make fun of = laugh at 取笑make money 赚钱( ) ①Tom was so careless that he often _____ in the exam.
A. make mistake
B. made mistakes
C. by mistake
( ) ②She seldom(很少) speaks English after class, for she was afraid ____ mistakes ___ grammar.
A. to make; of
B. making; of
C. to be made; in
D. of making; in
【2012曲靖中考】Every morning I _______________(整理床铺) and clean the living room.
4.I don’t have a partner to practice English with.
【解析】动词不定式作定语
5.Maybe you should join an English club.
【解析】join/join in/take part in
(1) join=be a member of 参加,指加入某种组织，并成为其中的一员。
join the army / party 入伍/ 党join the club 加入俱乐部
◆join in 后接活动名称
◆join sb. 加入到某个人群之中
(2) take part in 参加，指加入群体活动中并在活动中发挥重要作用。
( )①– I suppose we’ll go to plant trees next week.
-- Terrific! Planting trees is a lot of fun. I’d like to ___ you.
A. visit
B. join
C. follow
D. meet
( )②–Mary, would you like to ___ this game?
—I’d love to, but I have to finish ___ the composition first.
A. join in; to write
B. attend; writing
C. join; to write
D. take part in; writing.
6. Research shows that successful learners have some good habits in common 【解析】succeed v成功，达到→success n成功
→success ful adj成功的
→success fully adv成功地
◆succeed in doing sth
①If at first you don’t ____________(success) . try, try again.
( )②She works very hard ,so she will ____ in ____ the exam.
A. successful; pass
B. success ;passing
C. succeed; passing
D. successful; passing
7.it is also easier for you to pay attention to it for a long time.
【解析1】It?s + adj.(easy,difficult,important,necessary) +(for sb.) to do sth
【注】若形容词表示事物特征的，如：easy ,difficult, hard ,important等，须用介词for 【形容物，用for】
It?s +adj( kind, honest, friendly, )+(of sb) to do sth.
【注】若形容词表示人的性格、品质与特点，如：good ,kind ,nice, wrong等，用介词of。【形容人用of】
【2012山东东营】It’s very convenient ___ us to buy train tickets now because we can buy them either from the station or on the Internet.
A. to
B. of
C. by
D. for
①It’s important for us _______(learn) English well.
②It’s hard for us ____________(finish) this task in two day s.
( )③It’s very nice ____ you to help me a lot.
A. for
B. of
C. in
D. on
( ) ④–It’s very ___ of you to work out the problem for me.
A. kind
B. polite
C. clever
D. easy
【解析2】pay attention to 对……注意
①You should _________________(更关注) your study instead of playing computer
game.
②You should pay more attention to ______ (pronounce) the words.
8.Good learners often connect what they need to learn with something they are interested in
【解析】need v 需要
用于肯定句，是实义动词。
(1)人做主语，sb. need to do sth 某人需要做某事
(2)物做主语，sth need doing sth= sth need to be done
①Students need __________(have) a good rest in studying.
②The watch needs___________(mend).
用于否定句或疑问句，是情态动词
(1)needn’t = don’t have to 没有必要
(2)need ,must 引导的一般疑问句，肯定会的用must,否定回答用needn’t
—Must I go there now?
—Yes，you must/No, you needn’t
( )You ____ to the meeting this afternoon if you have something important to do.
A. needn’t to come
B. don’t need come
C. don’t need coming
D. needn’t come
9.Good learners think about what they are good at and what they need to practice more.
【解析1】
短语含义接代词时位置
think about 考虑，思考代词放在其后
think over 仔细思考代词放在中间
think of 想取
【短语】think about 想起，考虑think of 想到，认为
think over 仔细考虑think out 考虑好
think up 想出来think through 认真地考虑
( ) How do you like Fan Bingbing’s new movie?
A. feel about
B. think of
C. think about
D. know of
10.Even if you learn something well, you will forget it unless you use it.
Practice makes perfect.
【解析1】even though=even if 即使引导让步状语从句
【注】even though 引导让步状语从句时，不能与but连用
①_________（尽管）she was a girl ,she could do a lot of housework to help
her mother .
②【2012曲靖中考】____ my father isn’t pleased with his working
environment , he still works hard.
A. And
B. Although
C. But
D. Before
( ) 【2012青海】③—This dress was last year’s style.
—I think it still looks perfect ______ it has gone out this year.
A. so that
B. as if
C. even though
D. ever since
11.Good learners are also not afraid of making mistakes.
【解析】(1)be afraid of sth/doing sth 害怕做某事【担心（出现某种不良后果）】
(2)be afraid to do sth 害怕去做…【“怕” 或“不敢”去做某事】
(3)be afraid +that 恐怕…【用于礼貌地表达可能令人不愉快的消息】
(4) 回答别人的提问时，可用省略形式I?m afraid so(not).
【记】The girl was afraid to go across the bridge, for she was afraid of falling down from it.
( ) Tina is so shy that she is afraid of ____ in front of a group.
A. to speak
B. speak
C. speaking
D. spoke
12.Good learners find out the best ways to learn well.
【解析】the best way to do sth= the best way of doing sth 做某事最好的方法( ) The best way _____ English is doing more practice.
A. learn
B. learning
C. learns
D. to learn
13. They even ask each other and try to find out the answers.find
【解析1】try v 试图，设法，努力
【拓展】(1)try on 试穿
(2) try to do sth 努力做某事【侧重尽力做】
(3) try doing sth 试图做某事【侧重尝试做】
(4)try one?s best to do sth= do one?s best to do sth 尽某人最大努力做某事
①We should __________________(尽最大努力)to be happy in the future. ( )②We should try ___ much fruit.
A. eat
B. to eat
C. eating
D. eats
【解析2】find out寻找，查明
【拓展】find/look for/find out 找
(1)find v找到，强调找到的结果
(2)look for 寻找，强调找东西的过程
(3) find out 查明，找到，指经过调查，询问等弄清事实的真相
( )The window is broken. Try to_____ who broke it.
A. find out
B. find
C. look
D. look for
14.Knowledge comes from questioning
【解析】come from = be from 来自
She is from France=She comes from France.
【析】：be from 构成否定句时，在be 后加not;构成疑问句时，将be 提起。
come from 构成否定句或疑问句时，要借助助动词do或does.
①Her pen pal is from China.=Her pen pal _________China.
(2) My classmate is not from China.=My classmate ___________ China.
【come短语】come from 来自come back 回来come out 出来come on 加油，快点come in 进来come back 回来
come over 顺便来访come true 实现come up with 想出
( ) The famous writer introduced us his new book that will ____ next month.
A. give out
B. come out
C. put out
【2013浙江宁波】24. Scientists are trying their best to _______ ways to treat the terrible disease called H7N9.
A. come up with
B. look forward to
C. talk about
D. give up 【2013浙江丽水】25. The great writer has written many stories for children. It is said that a new one will ______ at the end of this month.
A. go out
B. come out
C. look out
D. run out
15.Are you __stressed_____out each time you have a test?
【解析】stressed out “有压力的，紧张的焦虑不安的” ,
通常和be / get 连用；构成be / get stressed out
( ) Jim failed in the test because he was _______ last weekend.
A. stressed out
B. fall asleep
C. attention
D. happily
Unit1 How can we become good learners ?
重点单词：
名词：
1.教科书，课本__________
2.交谈，谈话__________
3.发音__________
4.句子__________
5.病人__________
6.表达（方式）__________
7.秘密，秘诀__________
8.语法__________
9.笔记，记录__________
10.朋友，伙伴__________
11.模式，方式__________
12.物理（学）__________
13.化学__________ 14.搭档，同伴__________
15.知识，学问__________
16.注意，关注__________
17.大脑__________
18.能力，才能__________
19.速度__________
动词：
1.发现__________
2.重复__________
3.发音__________
4.增加，增长__________
5.复习，回顾__________
6.（使）连接，与……有联系__________ 形容词：
1.有耐心的__________
2.活跃的，积极的__________
3.秘密的__________
副词：
1.大声地__________
2.明智的，聪明地__________
3.一夜之间，在夜间__________
重点短语：
1.通过制作单词卡片
2. 向某人请求帮助__________
3练习对话__________
4.爱上，喜欢上__________
5.练习发音__________
6. 第一次__________
7.注意__________
8. 犯错误__________
9.大声朗读__________
10. 英语口语__________
11. 做笔记__________
12.如何提高我的阅读速度__________
13. 一个练习英语的伙伴__________
14. 发音准确__________
15.熟能生巧__________
16.学习能力__________
17. 查词典__________
18.变得厌烦__________
19.加入英语俱乐部__________
20.共同，共有__________
重点句子：
1.你怎样学习英语？我通过小组学习来学习英语。
_______ do you study English? I learn _____ studying ______ a group.
2.我怎样能提高我的发音？一种方法就是听磁带。
_____ can I improve ______ _______ ? One way is _____ _______ ______ _______.
3.通过阅读句子的前后试着猜测词的意义。
Try to guess a ______ ______ by ________ the sentences_______ or _______ it. 4.你读得越多就会读得越快。
_____ ______ you read,______ _______ you …ll be.
5.我只是躲藏在书后而什么也不说。
I just ______ _______ my ________ and never said anything.
6.我喜欢上这不使人兴奋且有趣的电影。
I_____ _______ _______ _______ this exciting and funny movie.
7.虽然我不能理解人物所说的一切，但他们的肢体语言和面部表情帮助我理解意义。
Although I could not understand everything the ________ said,their _______ ________ and the ________ _______ _______ ________ helped me get the meaning.
8.通过听英语电影里的有趣的英语交谈，我的发音也提高了。
My ________ also improved ______ _________ to the interesting _____________ in English movie.
9.我发现听一些你感兴趣的内容是语言学习的秘诀。
I ___________ that listening to something you _____ _____ ______ ______ the _____ ______ language learing.
10.通过查字典我能得到生词的意义。
I can get the ______ ______ the new words by _______ _______ _______ in a _________ .
11.好的学习者时常吧他们需要学习的和他们感兴趣的联系起来。
Good learners often ______ what they need ____ _____ _______ something they are interested in.
12.即使你学得一些东西好，但你如果不用它将会忘记。
________ _______ you learn something well.you will forget it ______ you use it.
13. .好的学习者也不害怕犯错误。
Good learners are also _____ ______ ______ making _______ .
14.他尝试了许多次成功了，并且从错误中学到很多。
He succeeded by _____ _______ _______ and ______ _______ his mistakes.
15.他们可以记下关键词来记笔记，或者画出思维图。
They may______ _______ by ______ ______ _____ words or _____ ______ _______ .
2017——2018学年度第一学期期末教学质量检测 九年级英语试卷 本试卷共120分，考试时间120分钟。本试卷分卷Ⅰ和卷Ⅱ两部分，请把答案写在卷Ⅱ的答题纸上，收卷时只收卷Ⅱ。 卷I（选择题，共80分） 听力部分（第一节） Ⅰ. 听句子，选出句子中所包含的信息。（共5小题，每小题1分，计5分） ( )1. A. ever B. never C. fever ( )2. A. give up B. look up C. cheer up ( )3. A.6:15 B.6:45 C.7:15 ( )4. A. You should work hard because you failed last test. B. If you don't work hard, you will fail the test. C. Even though you work hard, you will fail the test. ( )5. A.I can't work out the problem. B. My uncle asks me for help. C. My uncle worked out the problem. Ⅱ. 听句子，选出该句的最佳答语。（共5小题，每小题1分，计5分） ( )6. A. Yes, it is. B.A lot. C. It's interesting. ( )7. A. By bus. B. For a week. C. Three times a week. ( )8. A. Yes, please. B.OK, no problem. C. Not at all. ( )9. A. Once a week. B. He has many friends. C. On Friday night. ( )10. A. Of course not. B. Certainly. C. It's hard to say. III. 听对话和问题，选择正确答案。（共8小题，每小题1分，计8分） ( )11. What will the boy do after school? ( )12. What will the man buy? 1 / 1
代数 方程（组） ★重难点★一元二次方程及其解法；方程的有关应用题（特别是行程、工程问题）—、基本概念 1 ?方程、方程的解（根）、方程组的解、解方程（组） 二、一元二次方程 1 ?定义及一般形式： 2 ?解法：⑴直接开平方法（注意特征）⑵配方法（注意步骤一推倒求根公式） ⑶公式法：⑷因式分解法（特征：左边=0) 3.根的判别式：厶=b2 -4ac 4.根与系数的关系（韦达定理）：X-i + b x2= ，X-i c a a 逆定理：若，则以人，X2为根的一元 — -次方程是：a(X- X- ) ( X- X2 ) =0 5 ?常用等式： 三、可化为一元二次方程的方程 1 .分式方程 ⑴定义 ⑵基本思想：去分母 ⑶基本解法：①去分母法②换元法（如，） ⑷验根及方法 2. 无理方程 ⑴定义 ⑵基本思想：分母有理化 ⑶基本解法：①乘方法（注意技巧！！）购换元法（例，） ⑷验根及方法 3. 简单的二元二次方程组 由一个二元一次方程和一个二元二次方程组成的二元二次方程组都可用代入法解。四、列方程解应用题 一概述 列方程（组）解应用题是中学数学联系实际的一个重要方面。其具体步骤是： ⑴审题。理解题意。弄清问题中已知量是什么，未知量是什么，问题给出和涉及的相等关系是什么。 ⑵设兀（未知数）。①直接未知数②间接未知数（往往二者兼用）。一般来说，未知数越多，方程越易列，但越难解。 ⑶用含未知数的代数式表示相关的量。 ⑷寻找相等关系（有的由题目给出，有的由该问题所涉及的等量关系给出），列方程。一般地，未知数个数与方程个数是相同的。 ⑸解方程及检验。 ⑹答案。 综上所述，列方程解应用题实质是先把实际问题转化为数学问题（设元、列方程），在
英语九年级期末复习知识点总结 1. I study by working with a group.(P2) by 用法小结： 在……旁边(near) Will you sit down here by the window? 在……之前I have to go back by ten o?clock. By the time I went home, my mom had cooked lunch. 借助于……，用…… I go to school by bus. I learn English by listening to the radio. 2. deal with (P8) How will you deal with this problem? What will you do with this problem? 3. I used to be afraid of the dark.（P10） 4. used to do sth. 过去常常…… be/get used to doing sth. 习惯于…… be afraid of= be t errified of 5. Sixteen-year-olds should not be allowed to get their ears pierced. （P18） ● sixteen-year-olds = sixteen-year-old teenagers ● get their ears pierced get/have sth. done 6. What would you do if you had a million dollars?(P26) ●具体数字/several + hundred/thousand/million/billion hundreds/thousands/millions/billions of ● 虚拟语气：主语+would/should/could + V原if + 主语+ 过去时态（be动词用were ） 7. It must belong to Carla. (P34) belong to sb.= be sb?s 8. She?s worried because of her test. (P 36) ● because of + 短语because + 句子（主语+谓语） ● be worried about = worry about 担心…… 9. There must be something visiting the homes in our neighborhood.(P38) ● There be …doing sth. There be 句型中不能再有have/has ● must be 一定 10. I?ll help clean up th e city parks. ( P60 ) 动词+副词，代词放中间： cheer up ,set up , put up, fix up, cut up, clean up, give up, pick up,
九年级英语期末测试卷及答案 一、听力选择(共20小题；每题1分，满分20分) (请先熟悉听力试题，然后再动笔答题．做题时，先将答案划在试卷上．录音内容结束后，再将试卷上的答案转填涂到答题卡相应的位置上．) A、听下面10段对话．每段对话后有一个小题，从题中所给的A、 B、C三个选项中选出最佳选项． 听完每段对话后，你将有10秒钟的时间来回答有关小题和阅读下一小题．每段对话读两遍． 1．Which sign didn’t the lady notice? 2．What’s the weather like when they are talking? 3．What time did the girl get up this morning? 4．Which actress does the woman like best? 5．Where does this conversation probably take place? A．At home．B．In a stadium．C．In the hospital．6．Which dress does the man like? A．The red one．B．The white one．C．The purple one．7．How many desks are there for the parents? A．Sixteen．B．Twenty-five．C．Twenty-six．8．Who is the man speaking to? A．Mrs．Green．B．Dr．Brown．C．Joe．9．Which bus does the man want to take? A．A number 5．B．A number 3．C．A number 63．10．How is the woman going to the airport?
九年级期末学业水平测试英语试题 本测评卷分第Ⅰ卷（选择题）和第Ⅱ卷（非选择题）两部分，第Ⅱ卷即答题卷。满分120分。考试时间120分钟。 第Ⅰ卷（选择题共85分） 一、听力部分（20分） （一）听句子选答语。（5分）根据你所听到的句子，选择正确的答语。每个句子读两遍。1．A．By bike．B．By reading a lot．C．By the river. 2．A．No, I don’t．B．Yes, I am．．C．Yes, I did. 3．A．They don’t agree．B．No, I don’t C．I agree. 4．A．It must be Tom．B．It could belong to Tom． C．It might be OK. 5．A．I’d get a pen for him． B．I’m going shopping． C．I’ve got a book.. （二）对话理解。（5分）根据你所听到的对话内容，选择最佳选项。每段对话读两遍。6．A．Swimming B．Dreaming．C．Driving. 7．A．Pop music．B．Classical music．C．Country music. 8．A．Mary’s B．Carl’s．C．Fred’s. 9．A．To give her sister as a present． B．To give them to her mother． C．To get her ears pierced. 10．A．She would go back to school． B．She would take a vocation． C．She would find another job. （三）短文理解。（10分）根据你所听到的短文内容，选择最佳选项。短文读两遍。11．Carol is ______ this year． A．12．B．13．C．14 12．Carol is good at English because ________. A．she has read many English books
第二十六章反比例函数 26.1 反比例函数 26.1.1 反比例函数 1．理解反比例函数的概念；(难点) 2．能判断一个给定的函数是否为反比例函数，并会用待定系数法求解析式；(重点) 3．能根据实际问题中的条件建立反比例函数模型．(重点) 一、情境导入 1．京广高铁全程为2298km，某次列车的平均速度v(单位：km/h)与此次列车的全程运行时间t(单位：h)有什么样的等量关系？ 2．冷冻一个物体，使它的温度从20℃下降到零下100℃，每分钟平均变化的温度T(单位：℃)与冷冻时间t(单位：min)有什么样的等量关系？ 问题：这些关系式有什么共同点？ 二、合作探究 探究点一：反比例函数的定义 【类型一】反比例函数的识别 下列函数中：①y＝ 3 2x；②3xy＝1；③y＝ 1－2 x；④y＝ x 2.反比例函数有() A．1个B．2个C．3个D．4个 解析：①y＝ 3 2x是反比例函数，正确；②3xy＝1可化为y＝ 1 3x，是反比例函数，正确； ③y＝ 1－2 x是反比例函数，正确；④y＝ x 2是正比例函数，错误．故选C. 方法总结：判断一个函数是否是反比例函数，首先要看两个变量是否具有反比例关系，然后根据反比例函数的定义去判断，其形式为y＝ k x(k为常数，k≠0)，y＝kx －1(k为常数，k ≠0)或xy＝k(k为常数，k≠0)． 变式训练：见《学练优》本课时练习“课堂达标训练”第3题 【类型二】根据反比例函数的定义确定字母的值 已知函数y＝(2m2＋m－1)x2m2＋3m－3是反比例函数，求m的值．解析：由反比例函数的定义可得2m2＋3m－3＝－1，2m2＋m－1≠0，然后求解即可．
2015届九年级上学期 期末测试英语试卷(一) 一、单选题（每题1分，共20分） 1.The small boy didn?t know____waiting for. A.whom they were B.who were they C.who they are D.whom were they 2.---How can I save the water ---It?s easy. First, make sure the tap ____________ after using. A.turns off B.is turned off C.turns on D.is turned on 3.---I called you when I got the news yesterday. But you weren?t in. ---Oh, I __________ dinner for the family and didn?t hear it. A.cooked B.was cooking C.cook D.is cooking 4.--- Why are they going to Wenchuan this winter --- They?re going to be a volunteer there and _____________ the people in the disaster area. A.help with B.help out C.take care D.take off 5.That man ______be Mr Wang , because he has gone to Beijing. A.couldn?t B.might not C.can?t D.mustn?t 6.If you go, _______. A.I go, too. B.So do I C.So will I D.I will, either. 7. --- Let?s go swim ming after school! ---______. Call me at any time. A.Wait a moment B.Sounds good C.That depends. D.What for 8.I?m reading now. Please tell him ___________the TV a bit. A.turn up B.turn off C.to turn down D.to turn on 9. He found difficult to improve his English the teacher?s help A.it is; without B.it was; with C.it; without D.that is; with 10.She has __________ close friends so that she really doesn?t know __________ A.many; who to talk B.few; who to talk to C.much; what to do D.little; how to do 11.You can?t believe how terrible the fire is __________ you see it with your own eyes A.though B. because C. unless D. since 12. This year?s Beijing Music Awards will be covered on Channel 3 this evening A.lively B.live C.living D.alive 13. ---I won the first prize in the singing competition last Saturday. ---Really __________ A.That?s right. B.Congratulations! C.Don?t mention it. D.It?s very kind of you. 14. ----What ___________bad weather it is today! ----Yes, _____________ weather makes me so sad. A.a; a B./; the C.an; the D.the; a 15. I think _______ games are much better than _______ housework.
期末测试卷 第I卷（共65分） 听力部分 I. 听句子，选答语。（共5小题，计5分） 本题共有5个小题，每个小题你将听到一句话，读两遍，请从所给的三个选项中选出一个最恰当的答语。 1. A. She’s a nurse. B. She’s very busy. C. She’s at home. 2. A. Beijing is great! B. Thank you. I hope so. C. You too. Thank you. 3. A. I guess so. B. I don’t think so. C. I am happy for you. 4. A. Thanks, I’d love to. B. It doesn’t matter. C. You’d better not. 5. A. Don’t worry. B. You can’t miss it. C. Sorry, I’m new here. II. 听对话，选答案。（共10小题，计10分） 本题共有10个小题，每个小题你将听到一段对话和一个问题，读两遍，请根据每段对话的内容和后面的问题，从所给的三个选项中选出最恰当的一项。 6. A. Australia. B. Italy. C. America. 7. A. Alice. B. Tom. C. Mary. 8. A. Fishing. B. Running. C. Having lunch. 9. A.10 yuan. B. 3 yuan. C. 13 yuan. 10. A. Forks. B. Chopsticks. C. Spoons. 11. A. To recite the poem. B. To copy the poem. C. To write the poem. 12. A. It is the letter “i”. B. It is the letter “f”. C. It is the letter “t”. 13. A. An article about love. B. A poem about nature. C. A poem about plants. 14. A. She likes it very much. B. She thinks it is too boring. C. She thinks it is too difficult to understand. 15. A. He went to the beach. B. He went to a park. C. He went to a cinema. III. 听短文，选答案。（共5小题，计10分） 本题你将听到一篇短文，读两遍，请从每个小题的三个选项中，选出一个正确答案。 16. What did Dick do this week? A. He studied NBA in his science classes. B. He studied DNA in his science classes. C. He borrowed two books in his science classes. 17. What did Dick think of the first book? A. He thought it heavy but interesting. B. He thought it easy but boring. C. He thought it easy and interesting. 18. What will Dick going to buy next week? A. He is going to buy The Discovery of DNA. B. He is going to buy The Ideas of Biology. C. He is going to buy The Discovery of DNA and The Ideas of Biology.
人教版九年级英语期末考试题（含答案） 一、单项填空（共15小题；每小题1分，共15分） ( )1. It’s time since we met last . A. one and half month’s B. one and a half months C. one and half months’ D. one and a half months’ ( )2. of four buses will take you to the station . We can take of them . A. Any ; every B. None ; any C. All ; any D. Neither ; none ( )3. Two weeks is not enough for me to finish the work . I need week . A. the other B. a third C. the third D. other ( )4. A young man glasses came the office . He had an old bag his arm . A. without ; in ; in B. with ; into ; under C. in ; out of ; under D. with ; in ; on ( )5.Not only I but also Tom and Jack _____ interested in English because it _____ useful. A. is, is B. is, are C. are, is D. are, are ( )6. I found the baby as soon as he had heard his mother . A. angrily B. happily C. sadly D. pleased ( )7. The young man was hit by a truck . he was not hurt . A. Lucky ; bad B. Luckily ; terrible C. Luckily ; badly D. Lucky ; badly ( )8. As we all know ,Columbus America and Edison light bulbs. A. discovered ; invented B. invented ; discovered C. discovered ; discovered D. invented ; invented ( )9. Jack，please help me the picture on the wall. A. put off B. put up C. put into D. put on ( )10. —I have bought a new watch . —Where and when you it ? A. did ; buy B. do ; buy C. have ; bought D. will ; buy ( )11. Computers in everyday life in this country before long .
九年级下册重难点梳理 学习重点： 1．从现实情境中探索直角三角形的边角关系。理解正切、倾斜程度、坡度、锐角三角函数正弦、余弦的数学意义，密切数学与生活的联系。能用sinA、cosA表示直角三角形两边的比。 2．能根据直角三角形的边角关系，进行简单的计算。能够进行含30°、45°、60°角的三角函数值的计算，会比较锐角三角函数值的大小。 3．经历探索船是否有触礁危险的过程，进一步体会三角函数在解决问题过程中的作用。发展学生数学应用意识和解决问题的能力。 学习难点： 1．理解正切的意义，并用它来表示两边的比。 2．用函数的观点理解正弦、余弦和正切。 3．根据相关术语，常用的方向角度准确的画出图像。 学习重点： 1．能够表示简单变量之间的二次函数。利用描点法作出y=x2的图像过程中，理解掌握二次函数y=x2的性质。 2．二次函数y=ax2、y=ax2＋c的图像和性质，推导和研究二次函数y=ax2＋bx＋c的图像和性质。学习时结合图像分别从开口方向、对称轴、顶点坐标、最大（小值）、函数的增减性几个方面记忆分析． 3．能够根据二次函数的不同表示方式，从不同的侧面对函数进行研究．函数的综合题目，往往是三种方式的综合应用，由三种不同方式，都能把握函数性质，才会正确解题。 4．应用二次函数解决实际问题，要能正确分析和把握实际问题的数量关系，从而得到函数关系，再求最值。 5．把握二次函数图像与x轴（或y=h）交点的个数与一元二次方程的根的关系。理解二次函数y=ax2＋bx＋c图像与x轴交点，即y=0，即ax2＋bx＋c=0，从而转化为方程的根，再应用根的判别式，求根公式判断，求解即可。
2019-2020学年度第一学期初三年级期末测试 英 语 试 卷 听力理解（共30分） 一、听对话，从下面各题所给的A 、B 、C 三幅图片中选择与对话内容相符的图片。每段对话你将听两遍。（共5分，每小题1分） 1. A. B. C. 2. A. B. C. 3. A. B. C. 4. A. B. C. 5. A. B. C. 二、听对话或独白，根据对话或独白的内容，从下面各题所给的A 、B 、C 三个选项中选择最佳选项。每段对话或独白你将听两遍。（共15分，每小题1.5分） 请听一段对话，完成第6至第7小题。 6. What does the woman want to try on? A. A coat. B. A skirt. C. A jacket.
7. What color does the woman like? A. Blue. B. Green. C. Red. 请听一段对话，完成第8至第9小题。 8. Where is the woman going? A. To the History Museum B. To Hope Street. C. To the bus stop. 9. Which bus will the woman take? A. No.30. B. No.102. C. No. 861. 请听一段对话，完成第10至第11小题。 10. What’s the matter with Molly? A. She’s had a headache. B. She failed the exam. C. She feels sleepy. 11. What will Molly do to prevent (阻止) the problem? A. Move away. B. Call 110. C. Write to the newspaper. 请听一段对话,完成第12至第13小题。 12. When will Maria and Michael graduate from school? A. In three days. B. In a week. C. In a month. 13. What is Michael planning to prepare for each? A. A special gift. B. One or two books. C. A photo of his. 请听一段独白，完成第14至第15小题。 14. How can the students organize their time? A. Asking a teacher for advice. B. Making a list of things ahead. C. Sharing the things with parents. 15. What is the speaker mainly talking about? A. How to keep lively. B. How to deal with stress. C. How to do with hobbies. 三、听对话，记录关键信息。本段对话你将听两遍。（共10分，每小题2分） 请根据所听到的对话内容和提示词语，将所缺的关键信息填写在答题卡的相应位置上。 Holiday Hotel Booking Rooms Message How many: 16 room/150RMB Arriving Time: _17_ 1st How long: 18__ nights Name : 19 Brown Phone : 768 20 知识运用（共25分） 四、单项填空。（共15分，每小题1.5分） 从下面各题所给的A、B、C、D四个选项中，选择可以填入空白处的最佳选项。 21. My mom’s birthday is coming. I want to give_____ a birthday gift. A. her B. you C. him D. them
(此文档为word格式，下载后您可任意编辑修改！) 数学教案（七年级上册） 第1章有理数 第2章整式的加减 第3章一元一次方程 第4章图形认识初步 第一章有理数 1.1正数和负数 教学目标： 1、了解正数与负数是从实际需要中产生的。 2、能正确判断一个数是正数还是负数，明确0既不是正数也 不是负数。 3、会用正、负数表示实际问题中具有相反意义的量。 重点：正、负数的概念 重点：负数的概念、正确区分两种不同意义的量。 2、正数和负数 教师：如何来表示具有相反意义的量呢？我们现在来解决问题4提出的问题。 结论：零下5℃用－5℃来表示，零上5℃用5℃来表示。 为了用数表示具有相反意义的量，我们把其中一种意义的量。如零上、向东、收入和高于等规定为正的，而把与它相反的量规定为负的。正的用小学学过的数（0除外）表示，负的用小学学过的数（0除外）在前面加上“－”（读作负）号来表示。根据需要，有时在正数前面也加上“+”（读作正）号。 注意：①数0既不是正数，也不是负数。0不仅仅表示没有，也可以表示一个确定的量，如温度计中的0℃不是没有表示没有温度，它通常表示水结成冰时的温度。②正数、负数的“+”“－”的符号是表示量的性质相反，这种符号叫做性质符号。
三、巩固知识 1、课本P3 练习 2、课本P4例 义。 四、总结 ①什么是具有相反意义的量？②什么是正数，什么是负数？③引入负数后，0的意义是什么？ 五、布置作业 课本P5习题1.1第1、2题。 1.2.1有理数 教学目标： 1、正确理解有理数的概念及分类，能够准确区分正整数、0、负整数、正分数、负分数。 2、掌握有理数的分类方法，会对有理数进行分类，体验分类是数学上常用的处理问题的方法。 重点：正确理解有理数的概念 重点：有理数的分类 教学过程： 一、知识回顾，导入新课 什么是正数，什么是负数？ 问题1：学习了负数之后，我们对数的认识范围扩大了，你能写出三个不同类型的数吗？（请三位同学上黑板上写出，其他同学在自己的练习本上写出，如果有出现不同类型的数，同学们可上黑板补充。）问题2：观察黑板上的这么数，并给它们分类。 先让学生独立思考，接着讨论和交流分类的情况，得出数的类型有5类：正整数、0、负整数、正分数、负分数。 二、讲授新课 1、有理数的定义 引导学生对前面的数进行概括，得出：正整数、零、负整数统称为整数；正分数和负分数统称分数。整数可以看作分母为1的分数，正整数、零、负整数、正分数和负分数都可以写成分数的形式，这样的数称为有理数，即整数和分数统称有理数。 2、有理数的分类 让学生在总结出5类数基础上，进行概括，尝试进行分类，通过交流和讨论，再加上老师适当的指导，逐步得出下面的两种分类方式。 （1）按定义分类：（2）按性质分类：
15年期中考试重难点突破 15年期中考试与往年相比，具有传承性，亦有突破，会是传统与创新、变革激烈碰撞的一年，要想取得好成绩，必须开阔视野，明确考试命题的方向，熟悉中考考点，章节重难点，易错点，易混淆点，自己问题所在，逐一突破，才能在考试中立于不败之地——稳定可靠，藉此讲义，助你成功。 中考考点： 一、一元二次方程： 三大陷阱：①二次项系数a ≠0;②利用关于x 1，x 2的等式求未知字母系数的值时，验△；③关于方程的类型的分类讨论； 中考考点：①利用方程根的定义求代数式的值；（整体代入法，若结合一元二次方程根与系数的关系，还需要注意降次思想）②解一元二次方程；（配方法，熟练理解记忆公式法，含字母系数的十字相乘因式分解法，二次项系数不为1的因式分解法，可化为一元二次方程的分式方程的解法及步骤，高次方程与整体思想注意验△）③韦达定理及根与系数的关系；（据根的分布，求字母系数的取值或范围时注意字母所在位置或利用配方法判断方程根的分布，会求含x 1，x 2的对称式的值及利用构造法求值（非对称式要结合根的定义），注意含x 1，x 2的绝对值的问题的常用解题策略，⑤一元二次方程的应用；常见题型：面积问题（注意平移，分割拼接转化为特殊图形，立体转化为平面）、经济型问题（归一法），单循环、双循环问题（会以选择题形式出现）。 新变化：一元二次方程解决几何图形中的计算问题；（动点位置或运动时间，线段最值，等腰三角形分类讨论，直线与圆的位置关系） 一、一元二次方程： 1、如图，正方形ABCD 的边长为2，M 为AD 的中点，N 在边CD 上且∠NMB=∠MBC ，MN 的延长线与BC 的延长线交于点G ，则GN 的长是 。 2、如图，平面直角坐标系中，点M 是直线y=2与x 轴之间的一个动点，且点M 是抛物线c bx x y ++= 221的顶点，则方程12 1 2=++c bx x 的解的个数是（ ） A 、0或2 B 、0或1 C 、1或2 D 、0或1或2 3、二次函数y=ax 2 +bx+c （a ≠0）图象如图，下列结论：①abc ＞0；②2a+b=0；③当m ≠1时，a+b ＞am 2 +bm ；④a-b+c ＞0；⑤若ax 12 +bx 1=ax 22 +bx 2，且x 1≠x 2，x 1+x 2=2．其中正确的有（ ） A ．①②③ B ．②④ C ．②⑤ D ．②③⑤ 4、已知方程x 2 -2（m 2 -1）x+3m=0的两个根是互为相反数，则m 的值是（ ） A ．m=±1 B ．m=-1 C ．m=1 D ．m=0 G N D C B A
期末综合能力测试(一) 听力部分(20分)) 一、听句子，选择与所听内容相符的图片。(5分) 听力材料：1.The w ine is made from grapes. 2．We often eat mooncakes on Mid-Autumn Festi v al. 3．Lots of Western people can't use chopsticks. 4．Look！The balloons are so beautiful. 5．Cruel w ars made lots of children homeless. ,A),B),C) ,D)),\s\do5(E)) 1．__B__ 2.__C__ 3.__E__ 4.__A__ 5.__D__ 二、听小对话，选择正确的答案。(5分) 听力材料：M：Do you think grammar is the most difficult in English learning? W：No.I think w riting is. ( B )6.What does the girl think is the most difficult in English learning? A．Grammar.B．Writing.C．Listening. 听力材料：M：Mom，I'm excited to ha v e a food festi v al. W：Me too，dear. ( A )7.How do the speakers feel about the food festival? A．Excited. B．Bored. C．Surprised. 听力材料：M：Hi，Julia.Can I take my camera to the art museum? W：No.We mustn't take photos there. ( C )8.Where are they going? A．To the library. B．To the theater. C．To the museum. 听力材料：M：Whose are these things，do you kno w? W：Y es.The pen belongs to Jack.The pencil box belongs to Mary and the notebook is Ann's. ( B )9.Whose notebook is it? A．Mary's. B．Ann's. C．Jack's. 听力材料：M：Excuse me，w here can I buy some stamps? W：There is a post office on the opposite of the supermarket.You can buy some there. ( B )10.Where does the man want to go? A．To the supermarket. B．To the post office. C．To the police station.
第二十六章 二次函数 [本章知识要点] 1． 探索具体问题中的数量关系和变化规律． 2． 结合具体情境体会二次函数作为一种数学模型的意义，并了解二次函数的有关概念． 3． 会用描点法画出二次函数的图象，能通过图象和关系式认识二次函数的性质． 4． 会运用配方法确定二次函数图象的顶点、开口方向和对称轴． 5． 会利用二次函数的图象求一元二次方程（组）的近似解． 6． 会通过对现实情境的分析，确定二次函数的表达式，并能运用二次函数及其性质解决 简单的实际问题． 26．1 二次函数 [本课知识要点] 通过具体问题引入二次函数的概念，在解决问题的过程中体会二次函数的意义． [MM 及创新思维] （1）正方形边长为a （cm ），它的面积s （cm 2）是多少？ （2）矩形的长是4厘米，宽是3厘米，如果将其长与宽都增加x 厘米，则面积增加y 平方厘米，试写出y 与x 的关系式． 请观察上面列出的两个式子，它们是不是函数？为什么？如果是函数，请你结合学习一次函数概念的经验，给它下个定义． [实践与探索] 例1． m 取哪些值时，函数)1()(2 2 +++-=m mx x m m y 是以x 为自变量的二次函数？ 分析 若函数)1()(22 +++-=m mx x m m y 是二次函数，须满足的条件是： 02≠-m m ． 解 若函数)1()(2 2 +++-=m mx x m m y 是二次函数，则 02 ≠-m m ． 解得 0≠m ，且1≠m ． 因此，当0≠m ，且1≠m 时，函数)1()(2 2 +++-=m mx x m m y 是二次函数． 回顾与反思 形如c bx ax y ++=2 的函数只有在0≠a 的条件下才是二次函数． 探索 若函数)1()(22 +++-=m mx x m m y 是以x 为自变量的一次函数，则m 取哪些
初三年级下册数学重难点分析 聪明出于勤奋，天才在于积累。尽快地掌握科学知识，迅速提高学习能力,接下来查字典数学网为大家提供的初三年级下册数学重难点分析。 锐角三角函数定义 锐角角A的正弦(sin),余弦(cos)和正切(tan),余切(cot)以及正割(sec)，余割(csc)都叫做角A的锐角三角函数。 正弦(sin)等于对边比斜边;sinA=a/c 余弦(cos)等于邻边比斜边;cosA=b/c 正切(tan)等于对边比邻边;tanA=a/b 余切(cot)等于邻边比对边;cotA=b/a 正割(sec)等于斜边比邻边;secA=c/b 余割(csc)等于斜边比对边。cscA=c/a 互余角的三角函数间的关系 sin(90-)=cos, cos(90-)=sin, tan(90-)=cot, cot(90-)=tan. 平方关系： sin^2()+cos^2()=1 tan^2()+1=sec^2() cot^2()+1=csc^2() 积的关系： sin=tancos
cos=cotsin tan=sinsec cot=coscsc sec=tancsc csc=seccot 倒数关系： tancot=1 sincsc=1 cossec=1 两角和与差的三角函数： sin(A+B) = sinAcosB+cosAsinB sin(A-B) = sinAcosB-cosAsinB ? cos(A+B) = cosAcosB-sinAsinB cos(A-B) = cosAcosB+sinAsinB tan(A+B) = (tanA+tanB)/(1-tanAtanB) tan(A-B) = (tanA-tanB)/(1+tanAtanB) cot(A+B) = (cotAcotB-1)/(cotB+cotA) cot(A-B) = (cotAcotB+1)/(cotB-cotA) 三角和的三角函数： sin(++)=sincoscos+cossincos+coscossin-sinsinsin cos(++)=coscoscos-cossinsin-sincossin-sinsincos tan(++)=(tan+tan+tan-tantantan)/(1-tantan-tantan-ta