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新人教版八年级上册精选练习题附答案

新人教版八年级上册精选练习题附答案
新人教版八年级上册精选练习题附答案

新人教版八年级上册第三单元精选练习题附答案

Unit 3 I’m more outgoing than my sister.

第一课时Section A(1a~2d)

01基础过关

Ⅰ.根据句意及汉语提示填写单词。

1.What a ________(极好的) movie!I want to see it again.

2.I told you to clean the room,you didn't clean it,________(可是).

3.His sister didn't do well in the singing ________(比赛).

4.The little boy is very smart but not ________(工作努力的).

5.Grace is three years old and she can speak ________(清楚地).

Ⅱ.用括号内所给单词的适当形式填空。

6.Be ________(quietly)!I have something important to tell you.

7.I think Linda dances ________(well) than Kate.

8.The Shanghai Jing'an team ________(win) the men's U18 soccer gold medal in the first National Youth Games on August 26,2015.

9.Jack's brother is more ________(outgoing) than you.

10.Students can't speak ________(loud) in the library.

Ⅲ.单项选择。

( )11. I'm sure you can ________ a prize.

A.win B.beat C.take D.make

( )12.My cousin is ________.He likes making friends with others.

A.shy B.outgoing C.quiet D.lazy

( )13.________ they're brother and sister,they don't look the same.

A.Though B.When C.Because D.If

( )14.Our city is more beautiful than before,________?A.isn't it B.is it C.doesn't it D.does it

( )15.He is ________ than his brother.

A.thin B.thiner C.thinnest D.thinner

Ⅳ.根据汉语意思完成句子,每空一词。

16.汤姆比吉姆更有趣。

Tom is ________ ________ Jim.

17.她和她的哥哥一样勤奋。

She is ________ ________ ________ her brother.

18.玛丽的头发比我的长。

Mary's hair is ________ than ________.

19.丽莎唱得比安娜好。

Lisa sings ________ ________ Anna.

20.学生们正在安静地听老师讲课。

The students are ________ to the teacher ________.

02能力提升

Ⅴ.情景交际。

从方框中选择适当的句子补全对话。

A:Hi,Julia. Who is your good friend?

B:__21__

A:What does she look like?

B:__22__

A:Does Helen work hard?

B:__23__ But I think Jenny works harder than her.

A:Who is Jenny?

B:She is Helen's sister.__24__

A:Is the girl under the tree Helen?

B:__25__ Helen is in the music room now.

21.________22.________23.________ 24.________25.________

第二课时Section A(3a~3c)

01基础过关

Ⅰ.用括号内所给单词的适当形式填空。

1.Kate's schoolbag is newer than ________(my).

2.Who is much more ________(hard-working),Jack or John?

3.Eric looks a little ________(fat) than his brother.

4.It is ________(cold) today than it was yesterday.新课标第一网5.It seems that this problem is as ________(difficult) as that one.

Ⅱ.单项选择。

( )6.Mary is ________ better than Alice at playing chess.

A.many B.few C.much D.little

( )7.My sister is as ________ as her classmate Joe,so they are good friends. A.outgoing

B.more outgoing

C.the more outgoing

D.less outgoing

( )8.—Does Wu Qiang study harder than Li Guang?

—________. Li Guang studies harder.

A.Yes,he is B.Yes,he does

C.No,he isn't D.No,he doesn't

( )9.—What do you think of Lisa's speaking?

—No one does ________ in our class.

A.well B.better C.good D.best

( )10.Jack always tells jokes. He is much ________ than his brother.

A.fun B.funny C.funnier D.more funny

Ⅲ.按要求完成下列句子,每空一词。

11.The girl in a red coat is Betty.(对画线部分提问)

________ ________ is Betty?

12.Sam is heavier than John.(改为同义句)

John is ________ ________ Sam.

13.Paul jumps high. Carol jumps high,too.(合并为一句)

Paul jumps ________ ________ ________ Carol.

14.Tina is as friendly as Tara.(改为否定句)

Tina ________ ________ ________ ________ Tara.

15.Is Mike smarter than Jack?(改为同义句)

________ ________ ________,Mike or Jack?

Ⅳ.根据汉语意思完成句子,每空一词。

16.你能更大点儿声说吗?我听不见。

Can you speak ________ ________?I can't hear you.

17.史密斯先生和格林先生对我们一样友好。

Mr. Smith is ________ ________ to us ________ Mr. Green.

18.我的文具盒比迈克的贵。

My pencil box is ________ ________ than ________.

19.为了保持健康,你应该吃更少的肉和更多的蔬菜。

To keep healthy,you should eat ________ meat and ________ vegetables.

20.劳拉的好朋友比埃米更安静更聪明。

Laura's good friend is ________ and ________ than Amy.

02能力提升

Ⅴ. 短文填词。

用方框中所给单词的适当形式填空。

I have a friend named Rachel. She is a very kind girl.She__21__helps others. Rachel has a special job—__22__ candles. However,she lives a poor and hard life,because she can't make much money__23__this job.

But Rachel never feels sad about it. She thinks that she can use candles to make others happy. When Rachel is __24__,she often uses old candles to make a new one. Rachel also draws some lovely pictures on the candles. In this way,her candles are__25__from the candles in the shops. Rachel usually__26__others one candle at a time.__27__ a candle is not expensive,Rachel thinks it is the best way to show her love and care to others.

Every time when someone__28__her home,Rachel would give him a candle. So as a friend of Rachel,I have lots of __29__candles at home. When I feel sad,I would light up(点燃) a candle. The yellow candle light(光) makes me feel much __30__.

21.________22.________23.________ 24.________25.________

26.________ 27.________28.________29.________ 30.________

第三课时Section B(1a~1e)

01基础过关

Ⅰ.根据句意及汉语提示填写单词。

1.Do you think it is a ________(真正) beautiful park?

2.His daughter is ________(有才能的).She can always finish hard work very well. 3.I don't ________(在意) what my friends think.

4.The story was so interesting that we all ________(笑).

5.Was it ________(更凉爽的) yesterday than today?

Ⅱ.用适当的介词填空。

6.I think it's important ________ you to have a good friend.

7.My best friend Li Lan is good ________ sports.

8.Liu Juan's new bike is the same ________ yours.

9.She is quite different ________ her mother.

10.What do you like ________ your classmate?

Ⅲ.单项选择。

( )11.—Sonia,do you think you are different from Linda?

—Yes. I'm ________ at drawing than her.

A.better B.good C.well D.best

( )12.Ye Shiwen is talented ________ swimming.

A.at B.on C.with D.in

( )13.Nick is not ________ good at sports ________ Mary.

A.much;than B.very;as C.so;as D.as;so

( )14.Sometimes Mom makes me ________ her wash the clothes on weekends. A.help B.helps C.to help D.helping

( )15.—What do your parents do,Yang Lei?

—They ________ teachers.

A.both are B.all are C.are both D.are all

Ⅳ.汉译英。

16.我没有吉姆跑得快。

________________________________________________________________________ 17.她妹妹比她更外向。

________________________________________________________________________ 18.他是一个非常好的倾听者。

________________________________________________________________________ 19.我最好的朋友比我稍微安静一点儿。

________________________________________________________________________ 20.萨姆的母亲总是关心别人。

________________________________________________________________________

02能力提升

Ⅴ.短文填空。

根据短文内容,在空白处填入适当的单词补全短文。

My good friend Laura is my cousin. She is one year__21__than me. I'm fourteen years old,so she is fifteen now. She lives in Bristol. She is more hard-working than me and she usually gets__22__grades in the tests.We__23__like reading and swimming.__24__ we have the same hobby(爱好),we have some differences. For example,she is more outgoing and likes telling jokes. She is talented__25__singing.She practices singing every day. She often sings in shows and I watch her sing many times. We talk about everything together and always__26__our happiness(快乐) and sadness(悲伤) with each other. My favorite__27__is “A true friend reaches for your hand and touches your heart”.Laura is a friend__28__this.

Laura is very busy__29__she also studies photography(摄影) in her free time. She takes a lot of wonderful photos. Last year,she__30__ the first prize in the city photo competition.

I am lucky that I have so good a friend.

21.________22.________23.________24.________25.________

26. ________ 27.________28.________29.________ 30.________

第四课时Section B(2a~2e)

01基础过关

Ⅰ.根据句意及首字母提示填写单词。

1.You can see yourself in the m________.

2.It's n________ for you to learn English well if you want to work in America in the future.

3.Most of us write with our right h________.

4.Li Ming is nine years old and he studies in a p________ school.

5.We can get much useful i________ on the Internet.

Ⅱ.用方框中所给单词的适当形式填空。

6.Claire got good ________ in this test.

7.Mr.Green is ________ than Mrs.Black.

8.They ________ Hong Kong at 5:00 yesterday afternoon.

9.The boy felt sorry because he ________ his father's cup.

10.There is a ________ that old habits die hard.

Ⅲ.单项选择。

( )11.She found ________ useful information on the Internet yesterday.

A.a B.an C.some D.any

( )12.She is ________ more outgoing than me.

A.a lot B.a few

C.little D.few

( )13.There is only one room.I will ________ it with my friends.

A.build B.make

C.share D.use

( )14.This picture is very ________ that one.There are only a few differences.

A.such as B.similar to

C.across from D.the same as

( )15.—What do you think of the club?

—It is great.You ________ join it.

A.can't B.need

C.must D.should

Ⅳ.根据汉语提示完成句子,每空一词。

16.I really ________ ________(关心) the students in this class.

17.________ ________ ________(只要) you are here,help them.

18.Jane ________ ________ ________(与……不同) her classmates.She is shy.

19.Mrs.Clark teaches math in a ________ ________(小学).

20.________ ________(事实上),the girl is talented in music.

02能力提升

Ⅴ.阅读理解。

Toby's best friend is Jake.They are similar to each other in some ways.Both of them are friendly.They like exercising in the morning.And they often play basketball together on the weekend.But they are different from each other,too.Toby is serious and he studies harder than Jake,but Jake is more outgoing than Toby.Toby is a little quieter,but Jake often makes others laugh and he often speaks more loudly.

Nelly is Sue's best friend.They look similar because they are both tall with long straight hair.But Nelly is quieter and smarter.She is a good listener.Sue is more outgoing and is always talking.

根据短文内容,判断正(T)误(F)。

( )21.Toby is as friendly as Jake.

( )22.Toby likes exercising in the morning,but Jake doesn't.

( )23.Toby studies harder than Jake.

( )24.Nelly and Sue look different.

( )25.Sue is a good listener.

Self Check

Ⅰ.单项选择。

( )1.The students did not find much ________ about the writer on the Internet.

A.money B.information

C.story D.book

( )2.I think my watch is more beautiful than ________.

A.she B.herself

C.her D.hers

( )3.—Which of the two subjects do you like,art or music?

—________. They are really interesting.

A.None B.Both

C.All D.Either

( )4.—How do you like the new movie?

—Funny,________ the music of it isn't so good.

A.so B.or

C.because D.though

( )5.—What do you think of math,Kate?

—I think it is ________ than English.

A.difficult B.very difficult

C.more difficult D.as difficult

( )6.—Bob,can you give me the dictionary in the bookcase?

—I'm afraid I can't ________ it.I am too short.

A.reach B.read

C.see D.buy

( )7.—Look at the blackboard,Lily.Can you read these words for us?—Sorry,Mr.Black.I can't see them ________.

A.clearly B.quickly

C.loudly D.happily

( )8.—Anna is as ________ as Sally.

—Yes,but she is ________ than Sally.

A.tall;outgoing

B.taller;outgoing

C.tall;more outgoing

D.taller;more outgoing

( )9.—How can I learn English well,Wendy?

—You should ________ talking to your friends in English.

A.to practice B.practice

C.practices D.practicing

( )https://www.doczj.com/doc/0c1354819.html,rry didn't have piano lessons last week,________?A.doesn't he B.didn't he

C.does he D.did he

Ⅱ.词汇运用。

A) 根据句意及首字母提示填写单词。

11.Mrs.Green has three k________,two sons and one daughter. 12.Bill told us a funny story and made everyone l________.

13.David studies very hard,so he always gets good g________ in tests.

14.Susan is my best friend.I like to s________ everything with her.

15.—How was your vacation,Johnny?

—Oh,it was f________.I went to Dalian and had fun on the beach.

B) 用括号内所给单词的适当形式填空。

16.Lisa ________(break) my cup when we played together.

17.I'm ________(true) sorry to hear that you met so many problems.

18.Paul was ________(talent) in music when he was young.

19.As the ________(say) goes,“Time waits for no man!”

20.She sat ________(quiet) in the room just now.

Ⅲ.按要求完成下列句子,每空一词。

21.Gina dances better than Alice.(改为一般疑问句)

________ Gina ________ better than Alice?

22.I am eleven.My sister is nine.(合并为一句)

I am two years ________ ________ my sister.

23.Wendy gets up later than her brother.(改为同义句)

Wendy doesn't get up ________ ________ ________ her brother.

24.Dale's picture isn't the same as yours.(改为同义句)

Your picture is ________ ________ Dale's.

25.The girl with__long__curly__hair is my best friend.(对画线部分提问)

________ girl ________ your best friend?

Ⅳ.完形填空。

Marta's family moved to a new town.Marta was __26__worried than excited about her first day at her new school.She was worried that her __27__ classmates would not talk to her.How could she make new friends at the new school?She was not sure.When Marta walked into the classroom,the first__28__ she saw smiled (微笑)at her.She seemed __29__.Marta felt happy and smiled back and said hello to the girl.However,the girl didn't __30__.She just put her hand in Marta's and waved it back and forth (来回地摇动).

Marta was a little surprised.__31__ didn't the girl say hello to her?She asked the girl,“What's your name?”Again the girl didn't answer.Marta then looked at the girl's notebook.The __32__ Janis Moore was on it.

Marta then knew that Janis was using a__33__ way to talk with her.Janis was deaf (聋的)and couldn't hear or __34__,but she still was an outgoing girl.Marta decided to make her first new friend __35__ Janis.

( )26.A.less B.fewer C.much D.more

( )27.A.old B.new C.primary D.young

( )28.A.girl B.boy C.teacher D.man

( )29.A.hard-working B.friendly C.serious D.lazy

( )30.A.sing B.dance C.answer D.listen

( )31.A.How B.Where C.What D.Why

( )https://www.doczj.com/doc/0c1354819.html, B.age C.height D.grade

( )33.A.similar B.special C.lucky D.slow

( )34.A.share B.speak C.touch D.feel

( )35.A.to B.as C.at D.with

Ⅴ.阅读理解。

Friends are very important in everyone's life because friends are always there when we need them.It's great to have many friends,and I can't think about my life without my friends.

My best friend is Lisa.When I first met her,I was five.She is one year older than me.Now she is in the same class with me,in the 7th grade.She is tall and quite thin.She has long curly blond hair and blue eyes.I am not so beautiful.Sometimes I wish I could be as beautiful as she is.

My name's Molly.I am tall enough but a little fat.Lisa and I like doing a lot of things together and talking about different things.She always helps me with my math and I sometimes help her with her English and history.I had to do a report (报告) on science once,but I didn't understand (理解) what the teacher said.The next day,I read it in front of the class.But the teacher told me that my report was wrong and all my classmates laughed at (嘲笑) me.I felt very bad about myself.Lisa was the only one who didn't laugh at me.She tried to be nicer than anybody else and make me happy.

I am a shy person and sometimes I feel that people don't understand me.Lisa is friendly and everybody loves her.She is also smart and she can deal with (解决)everything.I am happy to have a friend like her.

( )36.When Molly first met Lisa,Lisa was ________ years old.

A.5B.6 C.7D.8

( )37.Lisa always helps Molly with her ________.

A.math B.English

C.history D.science

( )38.Why did Molly feel bad after reading the report?

A.Because Lisa did better than her.

B.Because she didn't read it aloud.

C.Because her classmates laughed at her.

D.Because the teacher didn't understand her.

( )39.Which of the following words CANNOT describe Lisa?

A.Shy. B.Friendly.

C.Popular. D.Smart.

( )40.What can we learn from the passage?

A.Lisa is taller than Molly.

B.Molly is more beautiful than Lisa.

C.Lisa has brown hair and blue eyes.

D.Molly is happy to have a friend like Lisa.

单元写作小专题&Section B(3a~4)

【单元写作目标】

能用形容词和副词的比较级描述自己和朋友的不同或相同之处,同时能表达个人的择友观。

1.能用形容词和副词的比较级描述自己和朋友的不同之处,如:外貌、性格、爱好、学习、运动等。

2.能用“both,as…as…,be different from,the same as”等描述自己和朋友的相同点或不同点。

3.写作微技能:巧用形容词和副词的比较级。

一、词汇积累

(一)人物对比类短语

1.与……不同________________

2.与……相像的________________

3.和……相同________________

4.和……一样高________________

(二)人物描述类短语

1.在某方面有天赋________________

2.擅长于________________

(三)朋友相处类短语

1.和某人相处得好________________

2.真正关心我________________

3.分享一切________________

4.使我笑________________

(四)写出下列形容词或副词的比较级

1.tall ________ 2.short ________

3.late ________ https://www.doczj.com/doc/0c1354819.html,zy ________

5.funny ________ 6.early ________

7.thin ________ 8.popular ________

9.good ________ 10.bad ________

二、句子积累

(一)佳句欣赏与模拟

1.My best friend Larry is quite different from me.

【quite为副词,可以用来修饰形容词,表示程度,意为“十分”】

我十分擅长英语。

________________________________________________________________________ 2.I'm shy so it's not easy for me to make friends.【it's+adj.+for sb.+to do sth.做某事对某

人来说怎么样】

取得好成绩对我来说很容易。

________________________________________________________________________ 3.Larry is much less hard-working,though.【much/a little/a lot+比较级】

事实上,李明跑步比我快得多。

________________________________________________________________________

(二)表达个人的择友观

1.在我看来,有相同点是必要的。

In my view,it's ________ to be the same.

2.我真的不介意朋友是与我相同或是不同。

I don't ________ ________ if friends are the same as me or different.

3.我认为朋友就该像书——你不需要很多,只要他们好就行。

I think friends ________ ________ books—you don't need a lot of them ________ ________ ________ they're good.

(三)写作微技能:比较级的巧用

形容词和副词的比较级,能帮助你更具体、生动、形象地描述所要描写的人物,写出评价人物的文章。如:I'm more outgoing than my sister. I work as hard as my sister.你可以根据你的需要,用“than,as…as”等更具体、生动地描述人物间的相同点与不同点。

1.Lisa唱得比Sam好。

Lisa sings ________ ________ Sam.

2.他和我一样外向。

He is ________ outgoing ________ me.

3.Peter学习不如Tom努力。

Peter doesn't work ________ hard ________ Tom.

三、以读促写

根据所给汉语或首字母提示,写出空白处所缺单词的正确形式。每空限填一词。完成后请找出文中的比较级并思考其在文中的用法。

My Best Friend and I

My favorite ________ (谚语) is “Friends are God's way of taking care of us.” It makes me think about my best friend Linda. We have known each other since we were in ________ (最初的) school. In some ways,we look ________ (相像的),and in some ways,we look different.

B________ of us have black eyes and long black hair,but she is a little taller than I.I'm quiet and ________ (严肃的),so it's not easy for me to make friends and get on with other ________ (小孩).However,Linda is not as quiet as me. She is ________ (外向的).She is so ________ (有才能的) in telling jokes that she always makes me l________.It's so lucky to have a friend like her. As for study,both of us are ________ (辛勤的) and like to learn everything new. We enjoy studying together. But Linda is better at study and gets better g________ than I do. She always tries her best to help me as l________ as I have problems. With her help,I made great progress in my lessons. I'm very thankful for all that she has done for me. I think I ________ (应该) learn

from her and try to help others just like her. In our free time,we often talk about and ________ (分享) everything. In f________ ,I think I'm a good listener and always there to listen.

________ (虽然) Linda is quite different from me,I don't really ________ (在意) if my friends are the same as me or different. I ________ (真正) understand that a life without friendship is like a day without sunshine. Linda is my true friend who reaches my hand and touches my ________ (内心).

四、篇章训练

今天网上讨论的主题是“My best friend and I”。假如你有一个最好的朋友Lucy,请根据表格所提供的信息进行跟帖,对你和Lucy的相同之处和不同之处做一个简单的描述。字数70词左右。

Unit 3I'm more outgoing than my sister.

第一课时Section A(1a~2d)

Ⅰ.1.fantastic 2.though https://www.doczj.com/doc/0c1354819.html,petition 4.hard-working 5.clearly

Ⅱ.6.quiet7.better8.won9.outgoing10.loudly

Ⅲ.11-15ABAAD

Ⅳ.16.funnier than17.as hard-working as18.longer;mine19.better than

20.listening;quietly

Ⅴ.21-25ECDBA

第二课时Section A(3a~3c)

Ⅰ.1.mine 2.hard-working 3.fatter 4.colder 5.difficult

Ⅱ.6-10CADBC

Ⅲ.11.Which girl12.thinner than13.as high as14.isn't as/so friendly as

15.Who/Which is smarter

Ⅳ.16.more loudly17.as friendly;as18.more expensive;Mike's

19.less;more20.quieter;smarter

Ⅴ.21.always22.making23.through24.free25.different26.gives27.Though28.visits 29.wonderful30.better

第三课时Section B(1a~1e)

Ⅰ.1.truly 2.talented 3.care https://www.doczj.com/doc/0c1354819.html,ughed 5.cooler

Ⅱ.6.for7.at8.as9.from10.about

Ⅲ.11-15ADCAC

Ⅳ.16.I don't run as fast as Jim.17.Her sister is more outgoing than her.

18.He is a very good listener.19.My best friend is a little quieter than me.

20.Sam's mother always cares about others.

Ⅴ.21.older22.better23.both24.Though25.in26.share27.saying

28.like29.because30.won

第四课时Section B(2a~2e)

Ⅰ.1.mirror 2.necessary 3.hands 4.primary https://www.doczj.com/doc/0c1354819.html,rmation

Ⅱ.6.grades7.more serious8.reached9.broke10.saying

Ⅲ.11-15CACBD

Ⅳ.16.care about17.As long as18.is different from19.primary school20.In fact

Ⅴ.21-25TFTFF

Self Check

Ⅰ.1-5BDBDC6-10AACBD

Ⅱ.A)https://www.doczj.com/doc/0c1354819.html,ugh13.grades14.share15.fantastic

B)16.broke17.truly18.talented19.saying20.quietly

Ⅲ.21.Does;dance22.older than23.as early as24.different from

25.Which;is

Ⅳ.26-30DBABC31-35DABBD

Ⅴ.36-40BACAD

单元写作小专题&Section B(3a~4)

一、词汇积累

(一)1.be different from2.be similar to3.the same as4.as tall as

(二)1.be talented in2.be good at

(三)1.be good with sb.2.truly care about me3.share everything

4.make me laugh

(四)https://www.doczj.com/doc/0c1354819.html,zier5.funnier6.earlier7.thinner

8.more popular9.better10.worse

二、句子积累

(一)1.I am quite good at English.2.It's easy for me to get good grades.

3.In fact,Li Ming runs much/a lot faster than me.

(二)1.necessary2.really care3.are like;as long as

(三)1.better than2.as;as3.as;as

三、以读促写

saying;primary;similar;Both;serious;kids/children;outgoing;talented;laugh;hard-working;grades;long;should;share;fact;Though/Although;care;really;heart

四、篇章训练

One possible version:

My best friend's name is Lucy. She is 12 years old,and I am one year older than her. Lucy is shorter than me. She is 1.5 meters tall and I'm 1.55 meters tall. Lucy is quiet and calm.

She is good at thinking of ideas. She is smarter than me,but I am more outgoing. I like to play sports and I'm good at them. We have something in common,for example,we both enjoy going to parties.

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l 2 l 1 l 3 第8题 第10题 第11题 9.若把分式xy y x 2+中的x 和y 都扩大3倍,且0≠+y x ,那么分式的值( C ) A 、扩大3倍 B 、不变 C 、缩小3倍 D 、缩小6倍 10. 如图,AD 是△ABC 的角平分线,DF ⊥AB ,垂足为F ,DE=DG ,△ADG 和△AED 的面积分别为50和39,则△EDF 的面积为( B ) A. 11 B. 5.5 C. 3.5 D. 7 11.如图,∠ABD 、∠ACD 的角平分线交于点P ,若∠A=50°,∠D=10°,则∠P 的度数为( B ) A.15° B.20° C.30° D.25° 12.已知a 、b 、c 、d 都是正数,且,则与0的大小关系是 (C ) A. B. C. D. 二.填空题(每小题3分,共18分) 13.分解因式:a 3b-2a 2b 2+ab 3= .{ab (a-b )2 } 14. 如图,已知CD ⊥AB ,BE ⊥AC ,垂足分别为D 、E ,BE 、CD 交于点O ,且AO 平分∠BAC ,那么图中全等三角形共有 4 对。 第14题 第16题 15. 若a 、b 满足2=+a b b a ,则2 2224b ab a b ab a ++++的值为2 1 16. 如图,△ABC 中,AB=AC ,∠A=36°,D 是AC 上一点,且BD=BC ,过点D 分别作 DE ⊥AB 、DF ⊥BC ,垂足分别是E 、F .给出以下四个结论:①DE=DF ;②点D 是AC 的中点;③DE 垂直平分AB ;④AB=BC+CD .其中正确结论的序号是 (把你认 为的正确结论的序号都填上){①③④}

2018新人教版八年级英语上册教案

◇总第1课时 Unit 1 Where did you go on vacation? Section A 1 (1a-2d) 一、教学目标: 1. 语言知识目标: 1) 能掌握以下单词:anyone, anywhere, wonderful, quite a few, most, something, nothing, everyone, of course, myself, yourself 能掌握以下句型: ①—Where did you go on vacation? —I went to the mountains. ②—Where did Tina to on vacation? —She went to the beach. ③—Did you go with anyone? —Yes, I did./No, I didn’t. 2) 能了解以下语法: —复合不定代词someone, anyone, something, anything等的用法。 —yourself, myself等反身代词的用法。 3)一般过去时态的特殊疑问句,一般疑问句及其肯定、否定回答。 2. 情感态度价值观目标: 学会用一般过去时进行信息交流,培养学生的环保意识,热爱大自然。 二、教学重难点 1. 教学重点: 1) 用所学的功能语言交流假期去了什么旅行。 2) 掌握本课时出现的新词汇。 2. 教学难点: 1) 复合不定代词someone, anyone, something, anything等的用法。 2) yourself, myself等反身代词的用法。 三、教学过程 Ⅰ. Lead-in 1. 看动画片来进入本课时的主题谈论上周末做了些什么事情,谈论过去发生的事情。 Ⅱ. Presentation 1. Show some pictures on the big screen. Let Ss read the expressions. 2. Focus attention on the picture. Ask: What can you see? Say: Each picture shows something a person did in the past. Name each activity and ask students to repeat: Stayed at home, Went to mountains, went to New York City 6. Went to the beach, visited my uncle, visited museums, went to summer camp 3. Now, please match each phrase with one of the pictures next to the name of the activity,point to the sample answer. 4. Check the answers. Answers: 1. f 2. b 3. g 4. e 5. c 6. a 7. d III. Listening 1. Point to the picture on the screen.

修订版最新人教版八年级上册数学导学案全集

11.1.1三角形的边 一、学习目标 1.认识三角形,能用符号语言表示三角形,并把三角形分类. 2.知道三角形三边不等的关系. 3.懂得判断三条线段能否构成一个三角形的方法,?并能用于解决有关的问题 二、重点:知道三角形三边不等关系. 难点:判断三条线段能否构成一个三角形的方法. 三、合作学习 (一)精讲 知识点一:三角形概念及分类 1、学生自学教科书内容,并完成下列问题: (1)三角形概念:由不在同一直线上的三条线段顺次首尾连接所组成的图形 叫做三角形。如图,线段____、______、______ 是三角形的边; 点A 、B 、C 是三角形的______; _____、 ______、_______ 是相邻两边组成的角,叫做三角形的内角,简称三角形 的角。图中三角形记作__________。 (2)三角形按角分类可分为___________、___________、______________。 (3)三角形按边分类可分为 _____________ (二)精练一: 1、如图.下列图形中是三角形的___________? 2、图3中有几个三角形?用符号表示这些三角形. 精讲 知识点二:知道三角形三边的不等关系,并判断三条线段 能否构成三角形 1、探究:请同学们画一个△ABC ,分别量出AB ,BC ,AC 的长,并比较下列各式的大小: AB+BC_____AC AB + AC _____ BC AC +BC _____ AB 结论:三角形任意两边的和大于第三边,任意两边的差小于第三边.......................... 精练二: 1、下列长度的三条线段能否组成三角形?为什么? (1)3,4,8; (2)5,6,11; (3)5,6,10 2、有四根木条,长度分别是12cm 、10cm 、8cm 、4cm ,选其中三根组成三角形,能组成三角形的个数是_______个。 3、如果三角形的两边长分别是3和5,那么第三边长可能是( ) A 、1 B 、9 C 、3 D 、10 4、阅读教科书例题,仿照例题解法完成下面这个问题: 5、一个三角形有两条边相等,周长为20cm ,三角形的一边长6cm ,求其他两边长。 6、一个等腰三角形的两边长分别是2和5,则它的周长是( ) A 、7 B 、9 C 、12 D 、9或12 7、若三角形的周长是60cm ,且三条边的比为3:4:5,则三边长分别为 ___________. 8、(选做)若△ABC 的三边长都是整数,周长为11,且有一边长为4,则这个三角形可能的最大边长是___________. 9、已知线段3cm,5cm,xcm,x 为偶数,以3,5,x 为边能 组成______个三角形。 学习反思: A B C

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