七年級(jí)三大時(shí)態(tài)專(zhuān)題_課件

1、 在英語(yǔ)中，在英語(yǔ)中，不同時(shí)間不同時(shí)間發(fā)生的動(dòng)作發(fā)生的動(dòng)作或存在的狀態(tài)要用或存在的狀態(tài)要用不同的動(dòng)詞形式不同的動(dòng)詞形式來(lái)來(lái)表現(xiàn)。表現(xiàn)。 每種時(shí)態(tài)的概念、信息詞、每種時(shí)態(tài)的概念、信息詞、結(jié)構(gòu)、句式變化、以及某些時(shí)態(tài)結(jié)構(gòu)、句式變化、以及某些時(shí)態(tài)間的相互區(qū)別間的相互區(qū)別重點(diǎn)掌握重點(diǎn)掌握時(shí)態(tài)時(shí)態(tài)Tense時(shí)態(tài)時(shí)態(tài)現(xiàn)在進(jìn)行時(shí)：現(xiàn)在進(jìn)行時(shí)：一般現(xiàn)在時(shí)：一般現(xiàn)在時(shí)：一般過(guò)去時(shí)：一般過(guò)去時(shí)：現(xiàn)在正在現(xiàn)在正在進(jìn)行進(jìn)行的動(dòng)作的動(dòng)作 經(jīng)常，反復(fù)經(jīng)常，反復(fù)或或習(xí)慣性習(xí)慣性的動(dòng)作或存在的狀態(tài)。的動(dòng)作或存在的狀態(tài)。過(guò)去過(guò)去某個(gè)時(shí)間或時(shí)間段發(fā)某個(gè)時(shí)間或時(shí)間段發(fā)生的動(dòng)作或存在的狀態(tài)。生的動(dòng)作或存在的狀態(tài)。(The Prese

2、nt Continuous Tense)(The Simple Present Tense)(The Simple Past Tense)當(dāng)前一段時(shí)間一直在當(dāng)前一段時(shí)間一直在進(jìn)行進(jìn)行的動(dòng)作的動(dòng)作 各時(shí)態(tài)常用的信息詞現(xiàn)在進(jìn)行時(shí)：一般現(xiàn)在時(shí):一般過(guò)去時(shí): now , Look! Listen! at this time Where is ? Dont talk! Its 8:00am. always , usually, often, sometimes ,never, every day, every last night, last, two days ago, ago, in 1999, i

3、n +過(guò)去過(guò)去的年份的年份, just now yesterday, yesterday morning 判斷下列信息詞是屬于哪種時(shí)態(tài)判斷下列信息詞是屬于哪種時(shí)態(tài) last night now every day Look! yesterday often Listen! two years ago alwaysin 1897 一般現(xiàn)在時(shí)一般過(guò)去時(shí)現(xiàn)在進(jìn)行時(shí)對(duì)比學(xué)習(xí)對(duì)比學(xué)習(xí)w 現(xiàn)在進(jìn)行時(shí)現(xiàn)在進(jìn)行時(shí) be(am,is,are)+Ving w 一般現(xiàn)在時(shí)一般現(xiàn)在時(shí) be(am,is,are) 或或V原原/V單三單三s/esw 一般過(guò)去時(shí)一般過(guò)去時(shí) be(was,were) 或或Vp.t現(xiàn)在分詞現(xiàn)在

4、分詞 的構(gòu)成：的構(gòu)成：動(dòng)詞第三人稱動(dòng)詞第三人稱單數(shù)的構(gòu)成：?jiǎn)螖?shù)的構(gòu)成：過(guò)去式過(guò)去式的構(gòu)成：的構(gòu)成：直接加直接加-ing.重讀輔元輔，雙寫(xiě)尾字母加重讀輔元輔，雙寫(xiě)尾字母加-ing.以以e 結(jié)尾去結(jié)尾去e加加-ing .直接加直接加-s.以以s, x, ch, sh, o結(jié)尾加結(jié)尾加-es.以以“輔音輔音+y “結(jié)尾變結(jié)尾變y 為為i再加再加-es.直接加直接加-ed.以以e結(jié)尾只加結(jié)尾只加d.重讀輔元輔，雙寫(xiě)尾字母再加重讀輔元輔，雙寫(xiě)尾字母再加-ed.以以“輔音輔音+y”結(jié)尾變結(jié)尾變y 為為i 再加再加-ed.不規(guī)則變化特別注意不規(guī)則變化特別注意清念清念 /t/ ,元濁元濁/d/ ; /t/ /

5、d/ 之后念之后念/id/規(guī)則動(dòng)詞規(guī)則動(dòng)詞-ed的讀音的讀音說(shuō)明：說(shuō)明：1、清后念、清后念 /t/ ，即即 ed 在清輔音后面念在清輔音后面念 /t/ ,例：例：finished helped watched looked passed cooked2、元或濁后元或濁后 /d/ ,即即 ed 在元音，濁輔音后面念在元音，濁輔音后面念 /d/ , 例：例：borrowed enjoyed called moved 3、/t/ /d/ 之后念之后念 /id/ , 即即 ed 在在 /t/ /d/ 音后面念音后面念 /id/ 例：例：wanted shouted needed counted過(guò)去式的

6、不規(guī)則變化過(guò)去式的不規(guī)則變化do -find -go -have-make -read -put -see -sit -write- give- come- eat -get -take- tell - meet - run - say - didfound wenthad made read put saw sat wrote gave came ate got took told met ran said have - look - begin- use- shop- get- dance- study-現(xiàn)在分詞現(xiàn)在分詞第三人稱單數(shù)第三人稱單數(shù)過(guò)去式過(guò)去式study-finish-have

7、-go-do-play-watch-give-go-write-find-play-study-see-visit-spend- having looking beginning using shopping getting dancing studying studies finishes has goes does plays watches gives went wrote found played studiedsaw visited spent判斷時(shí)態(tài)形式判斷時(shí)態(tài)形式：He always likes playing the piano.( )We are having an Engl

8、ish classes now.( )They often go home late.( )Lucy danced the disco at the party last night.( )I liked go to the zoo when I was young.( )My teacher is friendly to us.( )Look! They are playing football.( )She was born in 1990.( )I lost much money last night.（ ）A.現(xiàn)在進(jìn)行時(shí)現(xiàn)在進(jìn)行時(shí)B.一般現(xiàn)在時(shí)一般現(xiàn)在時(shí)C.一般過(guò)去時(shí)一般過(guò)去時(shí)ABCA

9、BBCCC用所給動(dòng)詞的適當(dāng)形式填空。用所給動(dòng)詞的適當(dāng)形式填空。1. Listen! Mary _ ( sing) now.2. A young man _ (run) on the playground now.3. My mother _(watch) TV play every day.4. Old Bush _(visit) China again last month.5. Mary often_ (play) sports .6. Look! Lucy and Lily _(read) books.7. There _(is) a football match yesterday a

10、fternoon.8. Our class _( go) to the zoo three days ago.9. Be quiet! My mother (sleep). is singing is running watches visited plays are reading was went is sleepingExercises w 用所給動(dòng)詞的適當(dāng)形式填空。用所給動(dòng)詞的適當(dāng)形式填空。10. Dont_(do)it like that. Do it like this.12. Would you like _( play) football? 13. Its 6 oclock i

11、n the morning. They _ ( have) their breakfast. do to play are having 改一般疑問(wèn)句的方法：改否定句的方法：首先看有無(wú)be動(dòng)詞，如果有，將be提到句首。如果沒(méi)有be動(dòng)詞，看原句的動(dòng)詞形式來(lái)決定借用助動(dòng)詞do/does/did,并且行為動(dòng)詞要還原。V-原形V-s/esV-ed(過(guò)去式)+動(dòng)詞原形?以此類(lèi)推首先看有無(wú)be動(dòng)詞，如果有，在be 動(dòng)詞后面加not.如果沒(méi)有be 動(dòng)詞，看原句的動(dòng)詞形式來(lái)決定借用助動(dòng)詞do/does/did,并在后面加not,并且行為動(dòng)詞要還原。主語(yǔ)+dont/doesnt/didnt+動(dòng)詞原形DoDoes

12、DidHe 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（一般疑問(wèn)句） 再（否定句）Is he a teacher?He isnt a teacher.Does Kangkang come from China?Kangkang doesnt come from China.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