when與while延續(xù)與非延續(xù)

1、 1. 以以when和和while引導(dǎo)的時(shí)間狀語從句引導(dǎo)的時(shí)間狀語從句1) 延續(xù)性動詞和非延續(xù)性動詞延續(xù)性動詞和非延續(xù)性動詞 延續(xù)性動詞延續(xù)性動詞指動作可以延續(xù)一段時(shí)間指動作可以延續(xù)一段時(shí)間, 而不是而不是 瞬間結(jié)束。瞬間結(jié)束。 如如: work、study、drink、eat等。等。 非延續(xù)性動詞非延續(xù)性動詞指動作極為短暫，瞬間結(jié)束。指動作極為短暫，瞬間結(jié)束。 如如: start、begin、hit、jump、knock等。等。2) 在本單元中在本單元中, 出現(xiàn)了以出現(xiàn)了以when和和while引導(dǎo)的引導(dǎo)的 時(shí)間狀語從句。時(shí)間狀語從句。when表示表示“當(dāng)當(dāng)?shù)臅r(shí)候的時(shí)候”。從句中既可用延續(xù)性

2、。從句中既可用延續(xù)性動詞動詞, 又可用非延續(xù)性動詞又可用非延續(xù)性動詞, 這些動詞既可以這些動詞既可以表示動作表示動作, 又可表示狀態(tài)。又可表示狀態(tài)。從句中的動作既可從句中的動作既可和主句的動作同時(shí)發(fā)生和主句的動作同時(shí)發(fā)生, 又可在主句的動作之前又可在主句的動作之前或之后發(fā)生。或之后發(fā)生。如：如： Mary was having dinner when I saw her . The boy was still sleeping when his mother got home yesterday morning .while表示表示“在在的時(shí)候的時(shí)候”、“在在期間期間”。它強(qiáng)調(diào)主句的動作與從句

3、的動作同時(shí)發(fā)生或它強(qiáng)調(diào)主句的動作與從句的動作同時(shí)發(fā)生或主句的動作發(fā)生在從句的動作過程中。主句的動作發(fā)生在從句的動作過程中。While從句中必須是表示動作或狀態(tài)的延續(xù)性動詞。從句中必須是表示動作或狀態(tài)的延續(xù)性動詞。如：如： The weather was fine while we were in Beijing . She called while I was out.如果主句的動作在從句的動作過程中發(fā)生，如果主句的動作在從句的動作過程中發(fā)生，從句常用進(jìn)行時(shí)。從句常用進(jìn)行時(shí)。如如:While we were swimming someone stole our clothes .Dont ta

4、lk so loud while others are working. 總結(jié)總結(jié) 1) when可指時(shí)間點(diǎn)可指時(shí)間點(diǎn), 又可指時(shí)間段又可指時(shí)間段, 從句中從句中 可用可用延續(xù)性動詞延續(xù)性動詞, 也可用也可用非延續(xù)性動詞。非延續(xù)性動詞。 2) while總是指一個(gè)時(shí)間段總是指一個(gè)時(shí)間段, 從句中從句中必須用延必須用延 續(xù)性動詞續(xù)性動詞。1. _ Jennifer was reading a magazine, his sister was listening to the pop music.A. WhileB. When C. What time2. I was trying to draw

5、 a cat on the board _ the teacher came in.A. whileB. when C. what time3. My best friend visited my house while I _ dinner in the kitchen.A. cookedB. cooking C. was cooking練一練練一練A B C 4. When _ the car _? In 1885 （2007隨州市）隨州市） A. did; invent B. was; invented C. does; invent D. is; invented5. Our teacher wants us to be _ when we talk with the foreigners. (06大連中考真題大連中考真題)A. comfortable B. unusual C. grateful D. confident B D 6. Dick gave me a note while I _ in the library. I guess he made it