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2013八年级英语上册unit2知识要点

发布时间:2013-10-29 08:48:40  

Unit 2 How often do you exercise?

重点、难点

1、How often do you exercise? 你多久锻炼一次?

“how often”是对表示频度的时间状语的提问,可翻译为“多久(一次)”。 eg:How often do you watch TV?

你多久看一次电视?

【拓展】与how有关的短语: how far(距离)多远;how long(时间)多长;how many多少(只可接可数名词的复数形式);how much多少(只可接不可数名词);how soon(时间)多久后(事情还要过多久才发生);how old(年龄)多大。 ?练一练 1?

对划线部分提问) ________ ________ ________she ________ to the movies? 对划线部分提问) ________ ________ boys are there in your class?

2、But my mother wants me to drink it. She says it’s good for my health. 但是我妈妈要我喝。她说牛奶对我的健康有好处。

(1) want为及物动词,意为“想要”,相当于would like,但would like的语气更委婉。用法如下:

want sth. 想要某物 eg:I want a new pen.我想要一支新钢笔。

want to do sth. 想要做某事 eg:I want to go to the library.我想去图书馆。 want sb.(not)to do sth. (不)想要某人做某事

eg:He wants me to play basketball with him.他想让我陪他打篮球。

(2)be good for 意为“对……有益”,其反义词组为be bad for, 意为“对……有害”。eg:Eating too much meat isn’t good for you. 吃太多肉对你并没有好处。 Smoking is bad for your health. 吸烟有害健康。

【拓展】be good to 对……友好(和善),be good at擅长,善于 ?练一练 2?

a. My parents want me ________ (study) hard.(用所给词的适当形式填空) b. His mother wants him ________ at home today.

A. stays B. stayed C. to stay D. staying c. Tom wants to watch TV.(同义句转换)

3、It is good to relax by using the Internet or watching game shows, but we think the best way to relax is through exercise.

通过上网或看娱乐节目放松是好的,但是我们认为最好的放松方式是通过锻炼。 (1)It’s good to do sth. 意为“做某事好”,它是“It’s+adj.+to do sth.”句型的一种形式,it作形式主语,to do sth.是真正的主语。

eg:It’s good to run in the morning. 早上跑步是好的。

(2) the best way to do sth.意为“做某事最好的方法”,其中to do sth.是动词不定式作后置定语,也可表达为the best way of doing sth. eg:I have a good way to do with the problem.

我有一个处理这个问题的好方法。

(3) by using the Internet or watching game shows,其中by作介词,表示“通过某种方式”。置于动名词前表示方法、手段、原因等。

eg:By working hard he made great progress.通过努力学习,他取得了很大的进步。

He earns his living by writing.他靠写作为生。 ?练一练 3?

a. It is very important for us ________ English well.

A. learn B. learning C. to learn D. learned

b. It’s very nice ________ you ________my parents your best wishes. A. of, sending B. of, to send C. for, to send D. for, sending c. —I often have hamburgers for lunch.

—You’d better not. It’s bad for you ________ too much junk food. A. eat B. to eat C. eating D. ate

d. The best time ________(visit) Beijing is in autumn.(用所给词的正确形式填空) 4、Although many students like to watch sports, game shows are the most popular. 虽然许多同学喜欢看体育节目,但是娱乐节目是最受欢迎的。 although是连词,意为“虽然,尽管,即使”。

eg:Although he is young, he knows a lot.虽然他很年轻,但是他知道很多。 【注意】although=though,汉语中可以说“虽然……,但是……”,但英语中although/though与but不能同时出现在同一个句子中。 ?练一练 4?

a. ________ Paul hated school, he loved science. A. Because B. Also C. Although D. But

b. Although they are very tired, they don’t stop working.(同义句转换) They are very tired, ________ they don’t stop working. c. Your pen may be in the desk.

________ your pen ________ in the desk.(同义句转换)

频度副词 1. 概念

频度副词是用来表示动作发生频率的词,主要包括always, usually, often, sometimes, hardly, ever, never等,如果表示具体频度次数,可采用次数加单位时间。例如: once a week 一周一次 twice a month 每月两次 2. 常用频度副词的区别

(1) always 意为“总是,永远”,表示频度最高。

(2) usually意为“通常”,即很少有例外,多用于一般现在时。 (3) often意为“经常”,在频度上不如usually那么频繁。 (4) sometimes意为“有时,偶尔”。

(5) hardly ever 意为“几乎不,很少”,表示否定意义。 (6) never 意为“从来没有,绝不”,表示否定意义。 以上几个频度副词所表示的频度,从高到低为:

always→uaually→often→sometimes→hardly ever→never 3. 频度副词在句子中的位置

在句子中,频度副词常放在实义动词之前,be动词、情态动词和助动词之后。例如: He always helps others.他总是帮助别人。

4. 对句子中频度副词进行提问,用“how often”。例如: 对划线部分提问) How often does he watch TV? 随堂练习

一、 单项选择

1.—________do you surf the Internet ? —Once a week.

A.How B.How old C.How often D.How many times 2.You hardly know him, ______ ?

A. are you B. aren’t you C.do you D.don’t you 3.—Would you like______some apples ? —Yes, please.

A. to have B. have C. having D. has 4.He ususally ________newspapers in the morning. A. reads B. seees C. watches D. looks 5.He ______ his homework at school.

A. doesn’t B. don’t do C.don’t D. doesn’t do 6.The little girl often goes skating________ weekends. A. in B. on C. to D. for

7.I eat fruit and drink milk every day to keep me ________. A. health B. healthily C. healthy D. unhealthy 8.—When did you go to the movie? —__________.

A. Tomorrow B. In two days C. Three days ago D. Next weekend 9.One of my favorite programs ________ Animal World. A. am B. is C. are D. don’t 二、用括号内所给词的适当形式填空

1.Mum asked children to eat it ________ (two) a week. 2.Do you do eye _________ (exercise) every day? 3.I want to go ________ (shop).

4.How often do you ____________ (shop)?

5.The doctor asked her _________ (eat) more fruit. 6.Here __________(be) a letter for you.

7.I read English books about____________(once) a week. 8.Few students ________( exercise ) three times a week.

9.Lots of ________ ( visit) come to the city at this time of the year. 三、根据汉语意思完成句子(每空一词) 1.—你周末通常做什么?

—What do you uaually do ______ _______? —我通常去看电影。

—I usually ________ _______ _________ ________. 2.—吃苹果对我们的身体有好处。

_______ apples is good ______ our health. 3.你每天晚上睡多少个小时?

_______ _______ ________ do you sleep every night? 4.很多学生根本不运动。

Many students ______ exercise _______ _______ . 5.没有学生一周做一两次作业。

No students _______ homework ________ or _______ a week.

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