高中英語(yǔ)必修四unit2語(yǔ)法解析ppt課件

1、Lead in,Do you remember this question? (watch) a family of chimps wake up is our first activity of the day,watching,Unit 2 Working the Land,Grammar: V-ing做主語(yǔ)和賓語(yǔ),1. 動(dòng)詞-ing形式的構(gòu)成: 是在動(dòng)詞末尾加-ing 形式構(gòu)成, 因此叫動(dòng)詞的 -ing 形式。 如: do-doing, help-helping, ask-asking, etc. 否定形式: not+ -ing 構(gòu)成 2. 動(dòng)詞-ing形式不能單獨(dú)作謂語(yǔ) 如：I rea

2、ding the book.(改錯(cuò)) 3. 動(dòng)詞-ing形式由動(dòng)詞加-ing變化而成, 它同時(shí)具有名詞和動(dòng)詞的特征, 在句中可以 作主語(yǔ)、賓語(yǔ)等,I am reading the book,一作主語(yǔ). 動(dòng)名詞作主語(yǔ)時(shí)，句子有三種形式： 1.動(dòng)名詞直接置于句首主語(yǔ)的位置上。 1) 對(duì)別人說(shuō)謊是我們?nèi)f萬(wàn)不能干的. is something we should never do 2)學(xué)習(xí)新單詞對(duì)我來(lái)說(shuō)非常重要。 is very important for me 3)說(shuō)比做容易。 is easier than doing,Learning new words,Talking,Speaking lies

3、 to others,2.用形式主語(yǔ)it，把真正的主語(yǔ)動(dòng)名詞結(jié)構(gòu)移置句尾。但這種句子形式有一定的限制，作表語(yǔ)的只能是某些形容詞或少數(shù)名詞，如useful，useless，good，fun；no use，worth等。如： 1)這個(gè)電影值得看。 2) 和拉珍爭(zhēng)辯是沒(méi)有什么用的,Seeing this film is worthing,Its worth seeing this film,Arguing with Lazhen is no use,It is no use arguing with Lazhen,3. 在there be no.結(jié)構(gòu)中作主語(yǔ), 這種結(jié)構(gòu)的意思相當(dāng)于“It is im

4、possible to do,There is no sense in doing 做沒(méi)有道理 There is/was no use doing 做無(wú)意義 There is/was nothing worse than doing 沒(méi)有比更糟的 There is/was no point doing 做無(wú)意義 注意： There is/was no need to do sth,動(dòng)名詞與不定式做主語(yǔ)時(shí)的比較： 動(dòng)名詞表示的動(dòng)作通常是一個(gè)習(xí)慣性的長(zhǎng)期進(jìn)行 的動(dòng)作, 不定式則通常表示動(dòng)作的一次性或短暫性。 e.g. 1）Teaching English is my job. 2）Finding

5、ways to grow more rice has been his life goal. 3）To reach there on time is my task,二、動(dòng)名詞用作賓語(yǔ) 動(dòng)名詞作賓語(yǔ)有兩種情況。 1. 只能后接-ing作賓語(yǔ)的動(dòng)詞, 常見(jiàn)的有 avoid, consider, enjoy, keep, finish, suggest, dislike, delay, escape, cannot help, imagine, mind, miss, practise, give up, risk, insist on, look forward,等。 例如： 1）I cant

6、avoid making mistakes 2）Have you enjoyed dancing? 3）People couldnt help laughing foolish man,2. 既可接-ing和to do作賓語(yǔ)的動(dòng)詞, 常見(jiàn)的有: begin, start, continue, like, love, prefer, by, mean, forget，remember, hate等。 A. 在 like, love, hate, prefer等動(dòng)詞之后， 用-ing或不定式意義上沒(méi)有什么不同, 只是側(cè)重 點(diǎn)有些不同, ing表示泛指的動(dòng)作, to do表示具體的一次性動(dòng)作。 B.

7、 在 begin/start之后, 用動(dòng)名詞和不定式, 意義沒(méi) 有什么不同, 尤其是當(dāng)主語(yǔ)是人的時(shí)候,C. 在動(dòng)詞forget, remember, regret之后, 用 動(dòng)名詞與不定式意義不同。 -ing 表示動(dòng)作已經(jīng)發(fā)生, -to do 表示動(dòng)作還沒(méi)發(fā)生； I remember giving him the letter Ill remember to give him the letter I will not forget helping her I will not forget to help her,我記得曾經(jīng)寫過(guò)信給他,我會(huì)記住寫信給他的,我不會(huì)忘記曾經(jīng)幫過(guò)她,我不會(huì)忘記要幫

8、助她,D. 意義各不相同 try to do (設(shè)法) try doing (試試) be used to doing 習(xí)慣于做某事 be used to do 被用來(lái)做某事 cant help doing 禁不住做某事 cant help to do 不能幫助做某事,mean to do (打算, 有意要做,mean doing (意思是, 意味著,3. 在介詞后接動(dòng)名詞作賓語(yǔ) I insist on studying hard 2) She was very interested in listening to this song. 注：下列短語(yǔ)中的to都是介詞, 所以動(dòng)詞要 接-ing形

9、式: devote to, pay attention to, lead to, look forward to, stick to等,1. Lets have a rest Not now. I dont want to stop _ yet(MET 1985) A. study B. to study C. for studying D. studying,解析: stop studying 意為“停止學(xué)習(xí),D,高考鏈接,2. Let me tell you something about the journalists Dont you remember _ me the story y

10、esterday? (1999上海高考) A. told B. telling C. to tell D. to have told,解析: remember telling me 意為 “記得曾經(jīng)告訴過(guò)我,B,1. If you can keep _(read) English newspapers, your English will be improved. 2. He has promised _(come) to my birthday party. 3. I hate _(tell) lies! 4. I will never forget _(go) to Beijing with him last summer. I forgot _(tell) her the news; so she knew nothing about it,Complete these sentences,reading,to come,telling/to tell,going,to tell,學(xué)英語(yǔ)很有趣。 Studying English is very interesting. 2. 讀這本書很有意義（meaningful）。 3. 我記得在哪里見(jiàn)過(guò)他,Transla