while和when引导的时间状语从句主句用一般时精编版

1、while 和 when 引导的时间状语从句 ,主句用（一般过去时）从句用（过去进行） .while 引导的从句要加延续性动词，而when延续和短暂性动词都可以，。6. 另外，when 和 while 的区别还在于： while 引导的时间状语从句多用过去进行时态，而 when 引导的时间状语从句多用一般过去时态。Whilethey were talking , the bell rang.正在他们谈话的时候，上课铃响了。I was doing my homeworkwhenmy mother came back homeyesterday evening.昨天晚上妈妈回家的时候，我正在做家庭

2、作业。I am cookingwhileJane is practicing.我在做饭的时候简正在练习。当此句改变主从句的位置时，则用when 引导。When the teacher came in They were sweeping the floor， we were talkingwhenthe teacher came in.老师进来时（这一时刻），他们在擦地板。Whilethey were sweeping the floor，the teacher came in.他们正擦地板时（这段时间），老师进来了。2. when 说明从句的动作和主句的动作可以是同时，也可以是先后发生；wh

3、ile 则强调主句的动作在从句动作的发生的过程中或主从句1两个动作同时发生。例如：They were singingwhilewe were dancing.He fell asleep when he was reading.他看书时睡着了。1. While we_(wait)for the bus,a girl_(run)up to us.2.I_(telephone)a friend when Bob_(come)in.6.While mother_(put)Cathy to bed,the door bell_(ring).7.when I_(walk)in the park,it_(

4、begin) to rain.9.George_(read)when they_(hear)a knock at thedoor.1.I_(have)mybreakfasttathalfpastsixyesterday morning.3.What_you_(do)at that time? We_(watch)TV.6._they_(have)ameetingat4yesterdayafternoon?No,they_.They_(clean)the classroom.13.When the bell rang,jenny_(wait )in her seat.14.She_(make)h

5、er dress the whole afternoon.21.I _a meal when you _ me.a. cooked, were ringingb. was cooking, rangc. was cooking, were ringingd. cooked, rang2.He said he _ to draw a plane on the blackboard at that time.a. triesb. triedc. was tryingd. will try3.While she _ TV, she _ a sound outside the room.a. was

6、watching, was hearingb. watched, was hearingc. watched, heardd. was watching, heard4.They _ a football game from 7 to 9 last night.a. were watchingb. watchc. watchedd. are watching10.He _ his father on the farm the whole afternoon last Saturday.a. helpsb. would helpc. was helpingd. is helping11.While mother _ some washing, I _ a kite for Kate.3a. did, madeb. was doing, made c. was doing, wasmakingd. did, was making13.He _ some cooking at that time, so he _ mea. did, heardb. did, didn't hearc. was doing, heardd. wasdoing, didn't hear14.This time yesterday jack _ his bike. He _ TVa.