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1、2021-7-18 第十一講狀語從句 2021-7-18 狀語從句是由從句充當(dāng)狀語,在句子中可修飾謂語動(dòng)詞(或其他動(dòng)詞)、形容詞、副詞或整個(gè)句子。它可以用來表示時(shí)間、地點(diǎn)、原因、目的、結(jié)果、條件、方式、比較、讓步等。 2021-7-18一邊) 一、狀語從句的引導(dǎo)詞狀語從句引導(dǎo)詞例句時(shí)間狀語從句while ( 謂語動(dòng)詞必須 Please keep quiet while (when) others are studying. 當(dāng)別人正在學(xué)是持續(xù)性動(dòng)詞), when 習(xí)時(shí),請(qǐng)保持安靜。(謂語動(dòng)詞可以是終止 When I went into the lab, the teacher was doin
2、g an experiment.性的,也可以延續(xù)性 (when 不能換成 while)當(dāng)我走進(jìn)實(shí)驗(yàn)室時(shí),老師正在做實(shí)驗(yàn)。的 ), as ( 當(dāng) 的 時(shí) As (When/While) I was walking down the street, I noticed a police候,強(qiáng)調(diào)“一邊 car.當(dāng)我沿著大街散步時(shí),我注意到一輛警車。 till/until ( 直 到 ),not.until/till ( 直到才) They played volleyball until/till it got dark.(延續(xù)性動(dòng)詞)他們打排球直到天黑才結(jié)束。He didnt go to bed u
3、ntil/till his father came back.(非延續(xù)性動(dòng)詞)直到他父親回來他才睡覺。 2021-7-18 續(xù)表狀語從句地點(diǎn)狀語從句引導(dǎo)詞where, wherever例句題的地方標(biāo)個(gè)記號(hào)。Sit wherever you like.坐在你喜歡的地方。if ( 不能用 whether 替條 件 狀 語 換 ), unless, so (as)從句(真實(shí) long as, on condition/非真實(shí)) that, so (as) far as, ifonly (if) If he is not in the office, he must be out for lunch.
4、如果他不在辦公室,那一定是出去吃午飯了。You may borrow the book so long as you keep it clean.你可以借這本書,只要你讓它保持干凈。 原因狀語從句because, since, as在家里,因?yàn)樗×恕ince everyone is here, now lets begin.大家都到齊了,現(xiàn)在開始。從句結(jié) 果 狀 語 so that,such.that他如此沖動(dòng)以至于他從沙發(fā)上跳了下來。so.that, He was so excited that he jumped from the sofa. 2021-7-18 狀語從句引導(dǎo)詞例句目的
5、狀語從句so, so that, in orderthat, in case (以防,以免) Speak clearly, so that they may understand you.說清楚些以便他們都能聽懂。He left early in case he should miss the train.他早早地離開,以防誤了火車。讓步狀語從句although, though, as,even if/though,however, whatever, whether.or, no matterwho/when/what, . Child as he is, he knows a lot.盡管
6、他還是個(gè)孩子,他卻知道很多。Whatever (No matter what) you say, Ill never change my mind.不管你說什么,我都不會(huì)改變主意。比 較 狀 語從句than, so/as.as, themore.the more. I have made a lot more mistakes than you have.我犯的錯(cuò)誤比你犯的多得多。The busier he is, the happier he feels.越忙他覺得越快樂。方 式 狀 語從句as, as if (though), theway, rather than. You must d
7、o the exercise as I show you.你必須按照我教你的去做練習(xí)。He acted as if nothing had happened.從他的舉止行為看,似乎什么 也沒發(fā)生過。 續(xù)表 2021-7-18 二、使用狀語從句時(shí)要注意的幾個(gè)問題1在時(shí)間和條件(有時(shí)也在方式、讓步等)狀語從句中,主句是一般將來時(shí),從句通常用一般現(xiàn)在時(shí)表示將來。2在有些時(shí)間、地點(diǎn)、條件、方式或讓步狀語從句中,如果從句的主語與主句主語一致(或雖不一致,但是 it),從句的謂語又包含動(dòng)詞 be,就可省略從句中的“主語be局部。如:If (you are) asked, you may come in.如果你被邀請(qǐng)了,你就可以進(jìn)來。If (it is) necessary, Ill explain to you again.如果有必要,我會(huì)再給你解釋一次。