when和while引導(dǎo)的時(shí)間狀語從句與這一時(shí)態(tài)連用之歐陽引擎創(chuàng)編

1、when和while引導(dǎo)的時(shí)間狀語 從句與這一時(shí)態(tài)連用。所以區(qū)別 when和while的用法成了這一 單元的難點(diǎn)。歐陽引擎(2021.01.01)(_)、when, while都有“當(dāng)時(shí)候的意思。when既可表示某一點(diǎn)時(shí)間，也可以表示某一段時(shí)間。在 when引導(dǎo)的時(shí)間狀語從句中，其謂語動(dòng)詞可以是延續(xù)性 的，也可以是非延續(xù)性的，可與主句中的謂語動(dòng)詞同時(shí)發(fā) 生，也可在其后發(fā)生。例如：1、I was just reading a book when she came into my room.她走進(jìn)我房間時(shí)，我正在看書。2、Were you writing when the teacher came

2、 in?老師進(jìn)來的時(shí)候，你在寫信嗎？3、When he was a child he was always trying out new ideas.他小時(shí)候就常常試驗(yàn)一些新的設(shè)想。(二)、while只能表示某一段時(shí)間，不能表示某一點(diǎn)時(shí)歐陽引擎創(chuàng)編2021.01.01間。在while引導(dǎo)的時(shí)間狀語從句中，其謂語動(dòng)詞只能是 延續(xù)性的，而且也只能與主句中的謂語動(dòng)詞同時(shí)發(fā)生或存 在。例如：1、While Jim was mending his bike, Lin Tao came to see him.正當(dāng)吉姆修自行車時(shí)，林濤來看他。2、You caiVt do yoiu homework wlii

3、le yoifre watching TV.你不能一邊看電視一邊做家庭作業(yè)。（三）、另外，when和while的區(qū)別還在于：while引導(dǎo) 的時(shí)間狀語從句多用進(jìn)行時(shí)態(tài)，而when引導(dǎo)的時(shí)間狀語 從句多用一般時(shí)態(tài)。例如：1、While they were talking , the bell rang.正在他們談話的時(shí)候，上課鈴響了。2、I was doing my homework when my mother came back home yesterday evening.昨天晚上媽媽回家的時(shí)候，我正在做家庭作1.she comes , I shall tell her to wait f

4、or you.A.When B. As C. While D. What2.she got older,she got wiser.A. When B. As C. While D. That3.Peter was reading，his wife was cooking.A. When B As C.While D. Thatwhen as whilewhen表示較短的時(shí)間，有的時(shí)候也可以指一段時(shí)間。女D：When he was young, he could do eat much more than his brother.while常表示一段較長(zhǎng)的時(shí)間，強(qiáng)調(diào)主句謂語動(dòng)詞 與從句謂語動(dòng)詞

5、同時(shí)發(fā)生。如:你的第三道題就是這樣。 只用as,不用when或while的時(shí)候。A）用于表示同一個(gè)人 的兩種動(dòng)作交替進(jìn)行，指”一邊，一邊”。如:The girl dances as she sings on the stage. B）表示兩個(gè)同步發(fā)展的動(dòng)作 或行為，譯為隨著o 女0：As time went on, she becamemore and more worried.when和while的區(qū)別都表示“當(dāng)時(shí)候的區(qū)別。請(qǐng)觀察以下句子：While in Vienna he studied music.他在維也納時(shí)學(xué)習(xí)音樂。While he was eating, I asked him

6、to lend me $2.當(dāng)他正在吃飯 時(shí)，我請(qǐng)他借給我二英鎊。While two detectives were keeping guard at the door, two others opened the parcel.這時(shí)兩個(gè)偵探 把著門，另外兩個(gè)打開包裹。While I read, she sang.我看書 時(shí)，她在唱歌。I met her while I was at school.當(dāng)我在學(xué)校的 時(shí)候我遇見了她。Edison was not a good student when he was a young boy愛迪 生小時(shí)候不是一個(gè)成績(jī)好的學(xué)生。When the plan

7、e arrived, some of the detectives were waiting inside the main building while others were waiting on the airfield.當(dāng)飛機(jī)抵達(dá)時(shí)，一部 分偵探等在主樓里，而啟一部分則等在停機(jī)坪上。Whenl came home my wife was cooking dinner.我回家時(shí)，妻子在做晚飯。通過觀察，我們可以這樣理解：when引導(dǎo)的從句里動(dòng)作發(fā) 生的時(shí)間相對(duì)主句動(dòng)作發(fā)生的時(shí)間要短些；while引導(dǎo)的從 句里的動(dòng)作發(fā)生的時(shí)間相對(duì)主句而言更長(zhǎng)些。333 as, when, while 意為

8、 although （盡管）,but （但是）,seeing that （鑒于）A 只有在形容詞+as+主語+to be / to seem / to appear這結(jié)構(gòu)中,as才意為though / although （盡管）:Tired as he was he offered to carry her. 相當(dāng)于:Though he was tired he offered to carry her.盡管他很累了，他還主動(dòng)提出要背著她。Strong as he was, he couldn, t lift it.盡管他力氣很大，他仍提不起這個(gè)東西。B while可意為but,用于表示強(qiáng)調(diào)對(duì)

9、比：At sea means on a ship，, while Gt the sea means at the seaside，.“At sea”意為“在船上”，而“at the sea”意為“在 海灘上”。Some people waste food while others haven，t enough.些人糟踏食物而啟一些人卻食不果腹。while可以意為although,這時(shí)常放在句首：While I sympathize with your point of view I cannot accept it.盡管我認(rèn)同你的觀點(diǎn)，但我不能接受它。C when 可以意為 seeing that / although （鑒于）。因此 它同while很相似，但主要用于引導(dǎo)使另一個(gè)動(dòng)作顯得不 合理的陳述句。它常用在一個(gè)問句里，但不是一定如此：How can you expect your children to be truthful when you yourself tell lies ?你自己都在撒謊，怎么能指望你的孩子們誠(chéng)實(shí)？It s not fair to expect her to do all the cooking when she has ha