人教版八年級英語上第三四單元知識重點

1、Unit 3 I’m more outgoing than my sister.1.形容詞和副詞有三個等級:原級,比較級,最高級.(1)規(guī)則變化a. 一般在詞尾加 st 或 est. high-higher-highestb.以 e 結尾的,加 r 或 st. fine-finer-finestc.以輔音字母加 y 結尾的,變 y 為 i, 再加 e r 或 est. funny-funnier-funniestd.以重讀閉音節(jié)結尾,末

2、尾只有 1 個元音字母+1 個輔音字母(除 w, y),先雙寫這個輔音字母,再加 e r 或 est. big-bigger-biggeste. 部分雙音節(jié)和多音節(jié)詞,在詞前加 more 或 most. tired-more tired-most fired, beautiful-more beautiful-most beautiful(2) 比較級的用法: 用于兩者作比較, 表示其中一個比另一個 “更---” ，在比較級前，可以用

3、 much(---得多), even(更加), a lot(得多), a little(---一點點)He is taller than me. He is much taller(高得多) than me.He is a little taller(高一點點) than me.(3)表示兩者在某一方面相同時(A 像 B 一樣),用 as+形容詞或副詞原級+as.I think science is as important as ma

4、th.Tom runs as fast as Jack.(4) 表示 A 方在某一方面不如 B 方時(A 不如 B),用 not as/so+形容詞或副詞原級+as.Math is not as/so interesting as Chinese.=Math is less interesting than Chinese.數(shù)學不如語文有趣.=Chinese is more interesting than math.語文比數(shù)學更有趣.

5、2. both 兩者都(1)both+(限定詞)+可數(shù)名詞復數(shù),作主語時, 謂語動詞用復數(shù).(2)both A and B,A 和 B 都,謂語用復數(shù).(3)both 位于連系動詞,助動詞,情態(tài)動詞之后,行為動詞之前.either 兩者中的任何一個, either+可數(shù)名詞單數(shù),作主語時, 謂語動詞用單數(shù).neither 兩者都不, neither+可數(shù)名詞單數(shù),作主語時,謂語動詞用單數(shù).My aunt and uncle are

6、both doctors. Either boy wants to buy the bicycle.Neither girl is my friends.3.由形容詞加 ly 構成的副詞的比較級,都是在前面加 more.clear-clearly-more clearly, quiet-quietly-more quietly, quick-quickly-more quickly,loud-loudly-more loudly4. s

7、ame 相同的,常用 the same, 如果 same 前面已經(jīng)有 this, those 等詞,就不再要 the, the same as 和---相同different 不同的,其后名詞要用復數(shù)形式.be different from.和---不同.My new bike is the same as yours.We are in different classes.This sweater is d

8、ifferent from that me.5. care (1)作及物動詞,在乎,介意,關心,后接賓語從句.(2) 作不及物動詞, care about/for 在乎,介意,關心,后接短語.(2)形容詞,漂亮的 Sally is a pretty girl.6. serve 動詞,招待,為-----服務service 名詞,接待,服務The shop assistant is serving a customer.The serv

9、ice in that restaurant was very poor.7. more and more popular 越來越受歡迎The+比較級, the+比較級,越----越-----Talent shows are getting more and more popular.The more, the better.越多越好.8. a kind of 一種, many ( different) kinds of =all ki

10、nds of 各種各樣的, kind of = a little 有點兒An apple is a kind of fruit.There are many kinds of toys.The elephants are kinds of smart.9. have--- in common 有相同特征All these shows have one thing in common.所有這些表演有一個共同之處.10. be up to

11、由-----決定That’s up to you to decide.那由你來決定.An Indian or Chinese meal? It’s up to you.吃印度菜還是中國菜?由你決定吧.11. play a role 扮演某一角色,起到某種作用play a role in 在某事或某個方面起到作用或承擔某種角色School play the most important role in education.學校在教育中起著

12、最為最要的作用.12. make up 編造(故事,諾言等)He is very quick at making up excuses.他非?？斓鼐幵旖杩?13. take sb/ sth seriously 認真對待某人或某事,把某人/某事當真,此處 take=consider認為,覺得He was joking, but your sister took him seriously.他在開玩笑,但你姐姐卻把他當真了.Sometime