英语四大时态复习 ppt课件.ppt

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1、.,英语时态,.,在英语中，不同时间发生的动作或存在的状态要用不同的动词形式来表现。,每种时态的概念、信息词、结构、句式变化、以及某些时态间的相互区别,重点掌握,时态,Tense,.,时态,现在进行时：,一般现在时：,一般过去时：,现在或现阶段正在进行的动作 . We are learning English class now.,经常或习惯性的动作或存在的状态。客观规律, 真理The sun rises in the east.,过去某个时间或时间段发生的动作或存在的状态。I watched TV last night.,一般将来时：,将来某一时刻的动作或状态，或将来某一段时间内经常的动作或

2、状态 .I will go to college.,be+v-ing(现在分词）,V -原形V-s/es三单,V-ed(过去式）,will +V-原形be going to +V原形,1,.,M1 四种基本时态1. Listen ! A boy is an English song. A sing B. singing C.sang D.sings2.All the students _ trees last week. A. are planting B. planted C. plant D. will plant 3.There _ an English film next week.

3、A. is B. be C. are D. is going to be4.On Sunday I usually basketball . Aplayed B. plays C. play D. playing5. It _me two hours to finish my homework last night. Aspent B. cost C. pay D. took,.,各时态常用的信息词,现在进行时：,一般现在时:,一般过去时:,now , Look! Listen! at this time Where is ? Dont talk! Its 8:00am.,always , u

4、sually, often, sometimes ,seldom, never, every day, every ,three times a day,last night, last, two days ago, ago, in 1999, just now =a moment ago, yesterday,一般将来时:,tomorrow， next week； next in the future ，in 2050 ， in +一段时间,2,.,判断下列信息词是属于哪种时态,now,现在进行时,in 1897,Listen!,last night,three times a week,a

5、lways,two years ago,often,yesterday,Look!,every day,一般现在时,一般过去时,一般将来时,tomorrow,in th future,in five minutes,表格对比学习,be+v-ing(现在分词）,在be 后加上not,Be提到句首,V -原形V-s/es三单,在实义v.前用助动词dont ,doesnt，行为动词要还原,Do,Does 提到句首，实义动词还原,V-ed(过去式）,在实义v.前用助动词didnt，实义动词还原,Did 提到句首，实义动词还原,will后加上not = wontbe后加上 not = isnt,will

6、 +V-原形be going to +V原形,Will 或be提到句首,3,He is a teacher.,2. Kangkang comes from China.,3. I usually take the bus to work.,4.They are having classes.,5.Jane played the guitar last night.,先变（一般疑问句） 再变（否定句）,Is he a teacher?He isnt a teacher.,Does Kangkang come from China?Kangkang doesnt come from China.,

7、Do you usually take the bus to work?I dont usually take the bus to work.,Are they having classes?They arent having classes.,Did Jane play the guitar last night?Jane didnt play the guitar last night.,句型变化操练,.,现在分词 的构成：,动词第三人称单数的构成：,过去式的构成：,直接加-ing.重读辅元辅，双写尾字母加-ing.以e 结尾去e加-ing .,直接加-s.以s, x, ch, sh,

8、o结尾加-es.以“辅音+y “结尾变y 为i再加-es.,直接加-ed.以e结尾只加d.重读辅元辅，双写尾字母再加-ed.以“辅音+y”结尾变y 为i 再加-ed.,不规则变化，参考120页,4,.,have - look - begin- use- shop- get- dance- study-,现在分词,第三人称单数,过去式,study-finish-have-go-do-play-watch-give-,need-stop-hope-play-try-plan-visit-like-,having looking beginning using shopping getting da

9、ncing studying,studies finishes has goes does plays watches gives,needed stopped hoped played tried planned visited liked,词形转换,.,过去式的不规则变化,blow - buy - can - come- do - eat - fall - find - forget - get -,give- go - have- know- learn - make - meet - read - run - say -,see - send- sit - take- think- w

10、ill - tell - begin - teach - catch -,blew bought could came did ate fell found forgot got,gave went had knew learnt made met read ran said,saw sent sat took thought would told began taught caught,.,用所给动词的适当形式填空。,1. Listen! Mary _ ( sing) now.2. A young man _ (run) on the playground now.3. My mother

11、_(watch) TV play every day.4. Old Bush _(visit) China again last month.5. I _ (play) sports three times a day.6. Look! Lucy and Lily _(read) books.7. There _(is) a football match yesterday afternoon.8. Our class _( go) to the zoo three days ago.9.We _(finish) our homework in two hours.10. She is goi

12、ng _(play) ping-pong with us.,is singing,is running,watches,visited,play,are reading,was,went,will finish,to play,.,Good bye!,.,小小测试,判断时态形式：,He always likes playing the piano.( )We are having an English classes now.( )They often go home late.( )Lucy is going to dance tomorrow.( )I liked go to the zo

13、o when I was young.( )Mr Li will go to another school next year.( )Look! They are playing football.( )She was born in 1990.( )I lost much money last night.（ ）,A.现在进行时 B.一般现在时C.一般过去时 D一般将来时,A,B,C,A,B,D,C,C,D,.,改一般疑问句的方法：,改否定句的方法：,首先看有无be或情态动词，如果有，将be提到句首并大写，句末打问号.如果没有be或情态动词，看原句的动词形式来决定借用助动词do/does/did,并且实义动词要还原。,V-原形V-s/esV-ed(过去式),+动词原形?,以此类推,首先看有无be动词，如果有，在be 动词后面加not.如果没有be 动词，看原句的动词形式来决定借用助动词do/does/did,并在后面加not,并且行为动词要还原。,主语+dont/doesnt/didnt+动词原形,