初一常用英语时态.ppt

1、大新庄乡第二初级中学 张梅,初一常用英语时态,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：,现在正在进行的动作,经常或习惯性的动作或存在的状态。,过去某个时间或时间段发生的动作或存在的状态。,(The Present Continuous Tense),(The Simple Present Tense),(The Simple Past Tense),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 , Loo

2、k! Listen! at this time Where is ? Dont talk! Its 8:00am.,always , usually, often, sometimes ,seldom, never, every day, every ,three times a day,last night, last, two days ago, ago, in 1999, in +过去的年份, just now =a moment ago, yesterday, yesterday morning,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! Li

3、sten! at this time Where is ? Dont talk! Its 8:00am.,always , usually, often, sometimes ,seldom, never, every day, every ,three times a day,last night, last, two days ago, ago, in 1999, in +过去的年份, just now =a moment ago, yesterday, yesterday morning,改一般疑问句的方法：,改否定句的方法：,首先看有无be动词，如果有，将be提到句首并大写，句末打问号

4、. 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,并且行为动词要还原。,V-原形 V-s/es V-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,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, o结尾加-es

5、. 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.,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-三人单,在行为v.前借用do ,does后加not，行为动词还原,Do,Does 提到句首，行为动词还原,V-ed (过去式）,在行为v.前借用did后加not，行为动词还原,Did 提到句首，行为动词还原,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-三人单,在行为v.前借用do ,d

6、oes后加not，行为动词还原,Do,Does 提到句首，行为动词还原,V-ed (过去式）,在行为v.前借用did后加not，行为动词还原,Did 提到句首，行为动词还原,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 danced the disco at the party last night.( ) I liked go to the zoo when I was young.( )

7、My teacher is friendly to us.( ) 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,A,B,C,A,B,B,C,C,C,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

8、- play- try- plan- visit- like-,having looking beginning using shopping getting dancing studying,studies finishes has goes does plays watches gives,needed stopped hoped played tried planned visited liked,词形转换,He is a teacher.,2. Kangkang comes from China.,3. I usually take the bus to work.,4.They ar

9、e having classes.,5.Jane played the guitar last night.,先（一般疑问句） 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

10、 Jane play the guitar last night? Jane didnt play the guitar last night.,句型变化操练,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 _(watch) TV play every day. 4. Old Bush _(visit) China again last month. 5. I _ (play) sports three times a day. 6.

11、Look! Lucy and Lily _(read) books. 7. There _(is) a football match yesterday afternoon. 8. Our class _( go) to the zoo three days ago.,is singing,is running,watches,visited,play,are reading,was,went,判断下列信息词是属于哪种时态,last night now every day Look! yesterday often Listen! two years ago always in 1897 three times a week,一般现在时 一般过去时 现在进行时,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- will - tell - b