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

1、when和while引導(dǎo)的時間狀語 從句與這一時態(tài)連用。所以區(qū)別 when和while的用法成了這一 單元的難點。歐陽引擎(2021.01.01)(_)、when, while都有“當(dāng)時候的意思。when既可表示某一點時間，也可以表示某一段時間。在 when引導(dǎo)的時間狀語從句中，其謂語動詞可以是延續(xù)性 的，也可以是非延續(xù)性的，可與主句中的謂語動詞同時發(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，我正在看書。2、Were you writing when the teacher came

2、 in?老師進(jìn)來的時候，你在寫信嗎？3、When he was a child he was always trying out new ideas.他小時候就常常試驗一些新的設(shè)想。(二)、while只能表示某一段時間，不能表示某一點時歐陽引擎創(chuàng)編2021.01.01間。在while引導(dǎo)的時間狀語從句中，其謂語動詞只能是 延續(xù)性的，而且也只能與主句中的謂語動詞同時發(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，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) 的時間狀語從句多用進(jìn)行時態(tài)，而when引導(dǎo)的時間狀語 從句多用一般時態(tài)。例如：1、While they were talking , the bell rang.正在他們談話的時候，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表示較短的時間，有的時候也可以指一段時間。女D：When he was young, he could do eat much more than his brother.while常表示一段較長的時間，強調(diào)主句謂語動詞 與從句謂語動詞

5、同時發(fā)生。如:你的第三道題就是這樣。 只用as,不用when或while的時候。A）用于表示同一個人 的兩種動作交替進(jìn)行，指”一邊，一邊”。如:The girl dances as she sings on the stage. B）表示兩個同步發(fā)展的動作 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)時候的區(qū)別。請觀察以下句子：While in Vienna he studied music.他在維也納時學(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，我請他借給我二英鎊。While two detectives were keeping guard at the door, two others opened the parcel.這時兩個偵探 把著門，另外兩個打開包裹。While I read, she sang.我看書 時，她在唱歌。I met her while I was at school.當(dāng)我在學(xué)校的 時候我遇見了她。Edison was not a good student when he was a young boy愛迪 生小時候不是一個成績好的學(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)飛機抵達(dá)時，一部 分偵探等在主樓里，而啟一部分則等在停機坪上。Whenl came home my wife was cooking dinner.我回家時，妻子在做晚飯。通過觀察，我們可以這樣理解：when引導(dǎo)的從句里動作發(fā) 生的時間相對主句動作發(fā)生的時間要短些；while引導(dǎo)的從 句里的動作發(fā)生的時間相對主句而言更長些。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，他仍提不起這個東西。B while可意為but,用于表示強調(diào)對

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，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)使另一個動作顯得不 合理的陳述句。它常用在一個問句里，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實？It s not fair to expect her to do all the cooking when she has ha