时间状语从句及过去进行时课件

1、时间状语从句过去进行时时间状语从句过去进行时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 gWhen 和 while 的用法与 区别1) When 引导时间状语从句时,句子的动词既可以是延续性动词,也可以是结束性动词.When c

2、lass began, he was 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. While he was listening to music, his father got back home. While I was sleeping, someone opened the door. When 和 while 的用法与 区别1) When 引导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

3、，并且表示动作正在进行时，常用while 来作连词When the UFO landed, the girl 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 book3)一般情况下，当时间状语从句中的谓语动词是 4) 当时间状Fill with “While” or “When”1._ May was talking on the phone, h

4、er sister walked in. 2._ Rita bought her new dog, it was wearing a little coat.3._ I saw Carlos, he was wearing a green shirt.4._ I was dancing, he was singing loudly.5. I was cleaning my room _ I heard a cry.WhenWhileWhileWhenwhenFill with “While” or “When”1._ when 引导的时间状语从句可以用各种时态When I was ten ye

5、ars old , I started tolearn English.When you feel tired, you should relax.When I saw my teacher , I stopped walking. while 引导的时间状语从句一般情况下只 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 引导的时间状语从句可以用各种时态When I wWhen I arrived , he was pl

6、aying 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,如果主句和从句中的谓语动词动作同时发生,通常用while 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.When I arrived , he was playin谓语动词结构 was/ were doing过去进行时相关的

7、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正在发生的动作谓语动词结构 was/ were doing过去进行时相 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 wa

8、s having breakfast at six yesterday morning. 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I _(watch) TV yesterday.I _(watch) TV at this time yesterday. What _ you _(do) yesterday? 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 w

9、atchingdid dowere doingwas readingreadI _(watch) TV yesterday.时间状语从句 While he was watching TV, someone knocked(敲) at the door.I didnt get home until the rain stopped. I went back home after I finished my work. Dont forget to close the door before you leave the classroom. I moved to Beijing when I wa

10、s five years old. I start to do homework as soon as I arrive home.时间状语从句 While he was watching Twhile 引导时间状语从句时，谓语动词必须是延续性动词，通常用过去进行时。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. Wh

11、ile Miss Cai was buying some food, somebodytook a photo of her.While Miss Hong was eating breakfast, Jackwent into the teachers office.主句和从句的动作是段与点之间的关系while 引导时间状语从句时，谓语动词必须是While IWhile I was eating snacks, my teacher came in.While it was raining hard, my mother arrived .While we were having a P.E

12、 class on the playground, it started to rain. While Miss Cai was buying some food, somebodytook a photo 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 foo

13、d when somebodytook a photo of her.While I was eating snacks, my 如果主句和从句的动作同时发生，并且都持续一段时间，主从句的谓语动词都用过去进行时。While Emma was eating snacks, Sam was eating snacks, too.While we were 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段与段之间的关系While I was go