八年级上册unit2精讲精练

句式精讲1. want to do sth.want sb. to do sth.意为“想要某人做某事”。

want的用法还有：want sth.想要什么want to do sth.想要做某事例如：She wants a cup of tea. 她想要一杯茶。

They want to go home. 他们想要回家。

He wants me to help him. 他想要我帮他。

【拓展】want后接动词不定式时，相当于would like。

want (sb.) to do sth.=would like (sb.) to do sth.2. be good forbe good for意为“对……有好处，对……有益处”，介词for后接名词或代词。

其反义词为be bad for，意为“对……有害处”。

例如：Junk food is not good for our health. 垃圾食品对我们的健康没有好处。

Smoking is bad for you. 吸烟对你有害。

【拓展】(1) be good to“对……好”，其反义短语为be bad to“对……不好”。

介词to之后一般接表示人的名词或代词。

例如：She is very good to us. 她对我们很好。

The boss is bad to his workers.那个老板对他的工人不好。

(2) be good at“在……方面擅长”，介词at后面常接名词、代词或动词-ing形式，同义短语为do well in。

例如：She is good at English and Chinese. = She does well in English and Chinese.她擅长英语和汉语。

(3) be good with“和……相处得好；擅于和……相处”。

例如：Are you good with children?你和孩子们相处得好吗？3. try to do sth.try为动词，意为“试图；设法；努力”。

人教新目标英语八年级上册Unit 2 How often do you exercise?词句精讲精练撰稿：审稿：词汇精讲1. maybemaybe是副词，意思是“也许，可能”，在句中作状语，相当于perhaps，常位于句首。

例如：Maybe she’ll come this afternoon. 她可能今天下午来。

Maybe you put the letter in your pockets. 大概你把信放在衣袋里了。

【拓展】（1）maybe和may be的辨析：maybe是副词，而在may be中，may是情态动词，be是动词原形，两者构成完整的谓语形式，与主语形成系表结构，意为“也许是、可能是”。

例如：I can’t find my watch. It may be in your pocket.我找不到我的手表了，它可能在你的口袋里。

He may be a soldier. 他可能是军人。

（2）maybe和may be可相互转换。

例如：He may be in the office. = Maybe he is in the office. 他或许在办公室。

You may be right. = Maybe you are right. 你或许是对的。

2. althoughalthough的意思相当于though，意为“尽管，虽然”，用来引导让步状语从句。

它所引导的从句不能与并列连词but; and; so等连用，但可以和yet; still等词连用。

例如：Although he lives alone, he doesn’t feel lonely.= He lives alone, but he doesn’t feel lonely.虽然他一个人住，但他并不感到孤独。

There is air all around us, although we cannot see it.虽然我们看不见空气，但空气却存在于我们的周围。

牛津译林版八年级上册Unit 2 School life知识点精讲精练1.Why don't dogs go to school, Eddie? 埃迪，为什么狗不上学？【知识点】Why don't sb do sth 为什么...不做某事呢？，本句是由why引导的特殊疑问句的否定结构。

“Why don't / doesn't / didn't / can’t+主语+动词原形+其他”表示“为什么…不…？”，通常表示一种建议或责备。

对于why弓|导的特殊疑问句，常用because引导的句子来回答。

例：Why don't you study hard? 你为什么不好好学习呢？Why do we need to study hard? 我们为什么需要努力学习？【拓展1】Why don't you还可用于提建议，相当于why not例：Why don't you go shopping with us? = Why not go shopping with us.为什么不和我们一起去购物呢？（言下之意：和我们一起去购物吧!）【拓展2】why not用法1.向对方提出建议，相当于why don't you＋动词原形。

例：It's hot today. Why not go swimming? = It's hot today. Why don't you go swimming?今天真热，（你）为什么不去游泳呢？2.表示同意对方的意见或建议。

例：---It's hot today. What about going swimming together? 今天真热，一起去游泳怎么样？---Good idea. Why not? 好主意。

为什么不呢？3.用来询问原因。

例：---You can't bring your dog here. 你不能把你的狗带到这儿来。

仁爱版八年级上册Unit 2 Keeping healthy (教师版)Topic two I must ask him to give up smoking.必考短语1.stay up熬夜2. have a good rest 好好休息3.give up 放弃4. be bad for 对…有害5.see a doctor 看医生6.need to do 需要做某事7.get into 进入8.keep healthy 保持健康9.in the sun 在太阳下10.take some medicine 吃药11.more than 超过12.do morning exercises做早操13.feel sleepy 困的14. in the newspaper 在报纸上15. on an empty stomach 空腹完成句子1. _________ __________(熬夜)late is bad for your health.2. I must ask him to _________ _________ ________(戒烟）3. The dress look beautiful, ________ ________ _____（穿上）quickly , please!4.It is very important_________ _________(完成) the homework on time.5.He is_______ _________(足够大）to go to school.．（key: staying up, give up smoking, put it on , to finish, old enough)语法填空一．单句填空1.Smoking _________ bad for our lungs. It may cause cancer.2. I 'm reading an article __________ the newspaper about smoking.3. __________(go) to school without breakfast isbad for your health.4. You can also get a headache when you exercise ________a long time _______ an empty stomach.5. I must ask him _______ give up smoking.6. You should _________(tidy) your rooms .7. The little boy usually has four ________(meal)a day.8. You'd better take more exercise and it will keep you _________(health).9. He went out without ________(say) a word.10. I wish I could give up ________(drink). (key: 1. is 2.in 3. going 4. for on 5. to 6.tidy 7.meals 8. healthy 9. saying 10.drinking )二．课文填空What are headaches? What _______(cause) them? And when should you go to see a doctor?A headache is a pain in your head. It’s not a disease ________(it) , but it ______ show that something is wrong ______ your health. Usually a fever will cause a headache. You might ______(get) a headache when you work too hard _____ when you don’t get enough sleep. You can ______ get a headache when you exercise ______a long time ______ an empty stomach.If you get headaches often, you need ______ see a doctor.(key: causes, itself, may ,with , get , or ,also ,for, on, to )【词汇精讲】1. stay upStaying up late is bad for your health.用法：staying up late 动名词作______________。

外研版八年级英语上学期Module 2 My hometown and my country 精讲精练基础重点知识检测短语归纳1 相当好；很好_________________2 事实上____________________3 在20世纪80年代________________ 4以某某闻名__________________5 某某的一部分_____________________6 超过；多于__________________7 在某某的东、南，西，北部__________________ 8 家乡；故乡___________________用法集萃1 before / ago时间点前before ,用于多种时态，时间段后ago 用一般过去时2 (not)as …as3 population 的用法（1）作主语时，谓语动词用单数形式。

The population of the city is about one million.(2)population 与分数或百分数连用时，谓语动词通常用复数形式。

More than 60 percent of the population of that city are workers.(3)形容人口多少时用large /big 或small ,不能用many ,few ,much 或littleThe population of China is very large .(4)表示“某地有多少人口”时的表达方式：The population of +某地+be+数。

（该句型中的population前用定冠词the ）The population of Australia is more than twenty million.That is a city with a population of more than ten million.(5)询问“某地有多少人口”时要用句型“what’s the population of …?”或“how large is the population of …?”而不用how many / how much 等。

Unit2 How often d o you exercise?Section A知识讲解一. help with housework 帮助做家务1. help with sth. 意为“帮助做某事”2. help sb. with sth. = help sb. _______ sth. 帮助某人做某事Eg: I often help him ______ his English. = I often help him __________ English. 我经常帮他学习英语。

【拓展】1. help oneself to… 请随便吃/喝···Please help yourself to some cakes.2.can’t help doing sth 情不自禁做某事I can’t help falling in love with that girl. 我情不自禁爱上那个女孩。

二．housework 意为“家务劳动”。

不可数名词。

1. They have housework to do. A. many B. much三. sometimes 有时辨析：sometimes ，some times ，sometime ， some timesometimes 有时候。

=at times= from time to time也是“有时”的意思。

some times 几次。

time作可数名词时可作“次数”解；表示“时间”时是不可数名词。

sometime 某个时候。

可指过去或将来的某个时候。

some time 一段时间。

常与for连用。

对它提问用how long 。

口诀记忆：分开“一段时间” ；相聚“某个时候”。

练习：① We plan to stay in Hainan for . 我们打算在海南呆一段时间。

② I am sure that we have met before. 我肯定我们之前见过几次了。

Unit 2 How often do you exercise?1, How如何（方式）how long多长（时间）答语常用"（For/about+）时间段"how far 多远（距离）答语常用"（It's+）数词+miles/meters/kilometers"how often多久一次（频率）答语常用"Always/ often/ every day/...v或"次数+时间” 等表频率的状语How soon多快，多久以后，常用在将來时中。

答语常用“in+时间段”how many多少（接可数名词）how much （接不可数名词）2，exercise 作v 锻炼，运动作[c] 操，练习do morning/ eye exercises作[uc] 锻炼take much/ more exercise3,at+钟点at 7 o'clock at noon/ at night (during/ in the day) at this/ that time at the age of on+具体某大、星期、特指的一天、纪念Fl、节Flon April 1st on Sunday on a cold winter morning on Teachers，Dayin +上午、下午、晚上、年、月、季节、年代、世纪in the morning/ afternoon/ evening in 1999 in August in autumn in 1960s in the 21st century4,help sb (to) do sthhelp sb with sthwith sb's help= with the help of sb5,do (the) houscwork= do chores6,频度副词（行前be后）Always usually often sometimes seldom hardly never7,sometimes有时(频度副词) sometime (将來)有朝一H,(曾经)某天Some times几次，几倍some time 一段时间(前血用介词for)8,go shopping= do some shopping9,once twice three times10,at onee, right now, right away, in a minute, in a moment, in no time 立亥马上once more再一次，重新once upon a time 从而，曾经11,every day每天everyday日常的，每天的12,on the internet13,what's your favorite program? =what program do you like best?14,free 空闲的in one's free time be free自由的as free as a fish freedom n•自免费的The best things in life are free.15,be full =bc busy 忙的be busy doing sth/ be busy with sthbe full of 充满eg： The bottle is full of milk.16,How come?怎么会？为什么？17,may be为情态动词+动词原形,在句子中做谓语,maybe是副词,表示可能,大概,一般放在句首(perhaps)。