英語八年級(jí)上冊(cè)重點(diǎn)知識(shí)歸納 Unit2知識(shí)點(diǎn)梳理（人教版）

  Unit 2 How often do you exercise?

  【重點(diǎn)句型】

1. I go to the movies maybe once a month.

我可能一個(gè)月看一次電影。

2. ——How often does he watch TV? 他多久看電視一次?

——He hardly ever watches TV.他幾乎不看電視。

3. ——Do you go shopping? 你購物嗎?

——No, I never go shopping.不，我從來就不購物。

4. Here are the results.

下面就是結(jié)果。

5. We found that only fifteen percent of our students exercise every day.

我們發(fā)現(xiàn)僅僅百分之十五的學(xué)生每天鍛煉。

6. We all know that many students often go online, we were surprised that ninety percent of them use the Internet every day.

我們都知道很多學(xué)生經(jīng)常上網(wǎng)，我們很吃驚他們中有百分之九十的人每天上網(wǎng)。

7. Although many students like to watch sports, game shows are the most popular.

雖然很多學(xué)生喜歡看體育節(jié)目，但游戲節(jié)目依然是最受歡迎的。

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

通過上網(wǎng)或看游戲節(jié)目來放松很好，但是我們認(rèn)為最好的放松方法還是通過鍛煉。

9. It’s healthy for the mind and the body.

對(duì)思想和身體都很健康。

10. So start exercising before it’s too late!

開始鍛煉，為時(shí)不晚。

  【重點(diǎn)語法】

1. 頻率副詞: always, usually, often, sometimes, never

頻率副詞在句中通常放在實(shí)義動(dòng)詞之前, be動(dòng)詞或助動(dòng)詞之后。常用于一般現(xiàn)在時(shí)態(tài)中。

2.“次數(shù)”的表達(dá)方法

一次 once， 兩次twice，三次或三次以上：基數(shù)詞+ times, 如：three times, five times,

3. how often“多久一次”問頻率，回答常含有頻率詞組或短語。

常見的how疑問詞：

1)How soon 多久(以后)

—How soon will he be back?他多久能回來?

—He will be back in a month. 他一個(gè)月后能回來。

2)how long “多久”

—How long did it take you to clean the house? 你打掃房子用了多久?

—It took me half an hour to clean the house. 我打掃這房子用了半小時(shí)。

3)How many+名復(fù)

How much+不可名

“多少” 問數(shù)量(how much 還可問價(jià)格)

  【重點(diǎn)短語】

1. go to the movies 去看電影

2. look after = take care of 照顧

3. surf the internet 上網(wǎng)

4. healthy lifestyle 健康的生活方式

5. go skate boarding 去劃板

6. keep healthy=stay healthy 保持健康

7. eating habits 飲食習(xí)慣

8. take more exercise 做更多的運(yùn)動(dòng)

9. the same as 與什么相同

10. be different from 不同

11. once a month一月一次

12. twice a week一周兩次

13.make a difference to 對(duì)......有影響/作用

14. most of the students=most students

15. shop=go shopping=do some shopping 購物

16. be good for 對(duì)......有益

17. be bad for 對(duì)......有害

18. come home from school放學(xué)回家

19. of course = certainly = sure 當(dāng)然

20. get good grades 取得好成績

21. keep/be in good health 保持健康

22. take a vacation 去度假

  【詞語辨析】

1. maybe / may be

maybe 是副詞，意為“大概， 可能，或許”，一般用于句首。May be是情態(tài)動(dòng)詞，意為“可能是...，也許是...，大概是...”.

The baby is crying. Maybe she is hungry.

The woman may be a teacher.

2. a few / few / a little / little

  People can live to 100, but few people can live to 150.

There is little time left. I won’t catch the first bus.

Could you give me a little milk?

3. hard / hardly

hard作形容詞，意為“困難的，艱苦的，硬的”;作副詞，意為“努力地，猛烈地”。hardly為副詞，意為“幾乎不”。

The ground is too hard to dig.

I can hardly understand them.

It’s raining hard. The people can hardly go outside.

4. As for homework , most students do homework every day .

as for...意思是“至于;關(guān)于”，+名詞、代詞或動(dòng)詞的-ing形式(即動(dòng)名詞)。

如： As for him，I never want to see him here.

至于他，我永遠(yuǎn)不希望在這里見到。

As for the story，you"d better not believe it.

關(guān)于那故事，你最好不要相信。

5. That sounds interesting.

這是“主語+系動(dòng)詞+表語”結(jié)構(gòu)的簡單句。sound(聽起來)，look(看起來)，smell(聞起來)，taste(嘗起來)，feel(覺得)，seem(好象)，grow(變得),get(變得)等詞在英語中可用作系動(dòng)詞，后跟形容詞作表語。如：

It tastes good. 這味道好。

The music sounds very sweet. 這音樂聽起來很入耳。

The smoke grew heavier and heavier. 煙霧變得越來越濃了。

6. percent 名詞，意為“百分之……”

百分?jǐn)?shù)的表示方法：基數(shù)+ percent (不用復(fù)數(shù)形式)，percent做主語時(shí)，謂語動(dòng)詞的數(shù)要根據(jù)其后面的名詞來確定。

50%：fifty percent 百分之五十

Fifty percent of the apples are bad. 50%的蘋果都?jí)牧恕?/p>

Twenty percent of the meat is in the fridge. 20%的肉都在冰箱

7. not… at all 意為“一點(diǎn)也不”，not應(yīng)放在be動(dòng)詞、情態(tài)動(dòng)詞或助動(dòng)詞之后。

The story isn’t interesting at all. 那個(gè)故事一點(diǎn)也沒有趣。

8. It is + adj. to do sth. 做某事是……的。

It is interesting to play computer games. 玩電腦很有趣。

9. take, spend, pay

It takes sb. some time to do sth. 意為“花費(fèi)某人……時(shí)間來做某事”。

人(sb.) spend 時(shí)間/錢 on sth. “買某物花了……錢”。

人(sb.) spend 時(shí)間/錢 (in) doing“花費(fèi)多少時(shí)間來做某事”。

pay 的主語必須是人，而“花錢買某物”為pay...for...

10. however 副詞，意為“然而，可是”，表示轉(zhuǎn)折關(guān)系，可放在句首、句中、句末。