1、什么是时间状语从句？状语通常是用来修饰句子中的动词的I got up at six this morning.I usually go swimming on Sunday.When he came into the classroom,I was doing my homework.如果用一个句子来修饰动词，这样的句子就被称为时间状语从句。从句主句When 和和 while 的用法与的用法与 区别区别1)When 引导时间状语从句时引导时间状语从句时,句子的动词既可以是句子的动词既可以是延续性动词延续性动词,也可以是也可以是结束性动词结束性动词.When class began,he was
2、 talking with me.When he was playing the piano,I arrived.2)while 引导的时间状语只能用延续性动词延续性动词.While he was listening to music,his father got back home.While I was sleeping,someone opened the door.3)一般情况下，当时间状语从句中的谓语动词是结束性动词时，用when 来作连词 4)当时间状语从句中的谓语动词是延续性动词，并且表示动作正在进行时，常用while 来作连词When the UFO landed,the gi
3、rl was cutting hair.While the girl was cutting hair,the UFO landed.5)如果主句和从句中的动作同时发生，用while 引导时间状语从句。While the girl was cutting hair,I was reading a bookFill with“While”or“When”1._ May was talking on the phone,her sister walked in.2._ Rita bought her new dog,it was wearing a little coat.3._ I saw Ca
4、rlos,he was wearing a green shirt.4._ I was dancing,he was singing loudly.5.I was cleaning my room _ I heard a cry.WhenWhileWhileWhenwhen when 引导的时间状语从句可以用引导的时间状语从句可以用各种时态各种时态When I was ten years old,I started tolearn English.When you feel tired,you should relax.When I saw my teacher,I stopped walki
5、ng.while 引导的时间状语从句一般情况下只引导的时间状语从句一般情况下只 能用过去进行时态能用过去进行时态 While she was walking,she met her oldfriend Lucy.While I was cooking dinner,my son arrived.When I arrived,he was playing the piano.While she was walking,she met her oldfriend Lucy.(时间状语)从句主句(时间状语)从句主句在时间状语从句中在时间状语从句中,如果主句和从句中的谓语动词如果主句和从句中的谓语动词
6、动作动作同时发生同时发生,通常用通常用while 引导时间状语从句引导时间状语从句.While I was cooking,my son was doing homework.While Jim was sleeping,his mother was doing the dishes.谓语动词结构谓语动词结构 was/were doing过去进行时相关的相关的时间状语时间状语：at this time yesterdayat 9 oclock last nightfrom 3 oclock to 5 oclock last Sundayat that time=then 那时 while 引导
7、的时间状语从句中用来表示过去某一个时间或者一段时间过去某一个时间或者一段时间正在正在发生的动作发生的动作 过去进行时和一般过去时 相同之处：动作都是发生在过去 不同之处：过去进行时强调动作在过去某一 时间正在正在发生。一般过去时仅仅说明这个动作 发生在过去。I had breakfast at six yesterday morning.I was having breakfast at six yesterday morning.1.I _(watch)TV yesterday.2.I _(watch)TV at this time yesterday.3.What _ you _(do)y
8、esterday?4.What _you_(do)from 9 to 10 yesterday morning?5.He _(read)a book when I came in.6.He_(read)a book and then went to bed.watched was watchingdid dowere doingwas readingread While he was watching TV,until the rain stopped.after I finished my work.before you leave the classroom.when I was five
9、 years old.as soon as I arrive home.while 引导时间状语从句时，谓语动词必须是，通常用。While I was eating snacks,my teacher came in.While it was raining hard,my mother arrived.While we were having a P.E class on the playground,it started to rain.While Miss Cai was buying some food,somebodytook a photo of her.While Miss Ho
10、ng was eating breakfast,Jackwent into the teachers office.主句和从句的动作是主句和从句的动作是与与之间的关系之间的关系While I was eating snacks,my teacher came in.While it was raining hard,my mother arrived.While we were having a P.E class on the playground,it started to rain.While Miss Cai was buying some food,somebodytook a ph
11、oto of her.=I was eating snacks when my teacher came in.=It was raining hard when my mother arrived.=We were having a P.E class on the playgroundwhen it started to rain.=Miss Cai was buying some food when somebodytook a photo of her.。While Emma was eating snacks,Sam was eating snacks,too.While we we
12、re having a Chinese class,Class 13were having an English class.While Miss Cai was having a math class,somebody was sleeping.Harry was singing while he was walking.主句和从句的动作是主句和从句的动作是与与之间的关系间的关系While I was going to school,a thief was followingme.While I was climbing the tree,a man shouted at me.While I was climbing the tree,a man was shouting at me.
