过去进行时课件2.pptx
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1、1.意义一:表示在过去某一时刻或过去某一段时间正在进行的动作。at this time yesterday,last nightat 11:00 last Sunday,the whole morningat that time yesterday,yesterday afternoonat 9:00 last night,from7:00to9:00yesterday.The Past Continuous Tense 2.标志词:第1页/共28页 S+was/were+ving+.否定式:疑问式:Was/Were+S.ving.?S+was/were not+ving.3.构成:对动作提问
2、:What was/were+doing.?Yes,was/were.No,.wasnt/werent.Was Jim watching TV at 8:00 yesterday evening?Jim wasnt watching TV at 8:00 yesterday eveningeg.Jim was watching TV at 8:00 yesterday evening.第2页/共28页 from8:00 to 10:00 yesterdayThey were swimming from8:00 to 10:00 yesterday.They werent swimming fr
3、om 8:00 to 10:00 yesterday.Were they swimming from 8:00 to 10:00yesterday?第3页/共28页 Lets talkWhat was he doing at this time yesterday?He was cooking a meal at this time yesterday.第4页/共28页ride a horseWhat was he doing the whole afternoon?He was riding a horse the whole afternoon.第5页/共28页Was he doing h
4、omework at four oclock last Friday?He was playing football at four oclock last Friday.No,he wasnt.What was he doing at four oclock last Friday?第6页/共28页at ten oclock yesterdayyesterday afternoonfrom 9:00 to 10:00 yesterdayLets talk1.23.第7页/共28页过去进行时与一般过去式的区别:Lucy was making a kite yesterday afternoon
5、.昨天下午露西一直在做风筝(不知道是否做完)Lucy made a kite yesterday afternoon.昨天下午露西做了一个风筝。(做完了)一般过去时:表示过去某一时间发生了的动作或存在的状态。过去进行时:强调正在发生的动作。Attention第8页/共28页意义二:过去进行时还用于when,while引导的时间状语从句when 和 while 的异同:1.这两个词都有“当的时候”的意思。2.when引导的时间状语从句,主过-从过。3.when 引导的时间状语从句,当一个动作发生的时 候,另一个动作正在进行,先发生的动作用过去进行 时,后发生的动作用一般过去时。4.when后面
6、的从句为进行时,可以用while代替 .Eg.When I came home,she was cooking dinner.当我到家时,她正在做饭。When/While they were talking,the bell rang.正在他们谈话的时候,上课铃响了。第9页/共28页 5.while引导时间状语从句时,当主句和从句动作同时进行,无时间差,均用进行时,而when 不能同时用进行时。6.while 强调一段时间,所以从句的谓语动词常是延续性的.Eg.While I was watching TV,my father was reading a newspaper last nigh
7、t.While/when Peter was sleeping,his mother left home.You are listening while I am speaking.第10页/共28页1.When my mother _ (come)back,I_(do)homework yesterday.=My mother came back When/while I was doing homework yesterday.2.When I _(get)to school,Mike _ (read)English this morning.=I got to school when/w
8、hile Mike was reading English this morning.3.My mother was cooking while I was cleaning the room yesterday.如何区别 when 和while中的时态:came was doing were readingget第11页/共28页第12页/共28页一、Fill in the blanks with“when”and“while”.1.We were talking_ the teacher came into the classroom.2.I was singing _ he was da
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