《七年级英语三大时态对比ppt课件》由会员分享，可在线阅读，更多相关《七年级英语三大时态对比ppt课件（19页珍藏版）》请在金锄头文库上搜索。
1、三种时态的比较学习三种时态的比较学习新目的七年级新目的七年级 在英在英语中，用中，用动词的方式的的方式的变化来化来表达不同表达不同时间发生的生的动作或存在的形状作或存在的形状 ，这就是就是时态。如今如今进展展时普通如今普通如今时普普经过去去时如今进展时：如今进展时：普通如今时：普通如今时：普经过去时：普经过去时：如今或如今或现阶段正在段正在进展展的的动作作 。经常、反复或常、反复或习惯性的性的动作以及存在的形状。作以及存在的形状。过去某个去某个时间发生的生的动作或存在的形状。作或存在的形状。概念概念如今分词如今分词 的构成：的构成：动词第三人动词第三人称单数的构称单数的构成：成：过去式过去式的
2、构成：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 .直接加直接加s.以以s, x, ch, sh, o结结尾加尾加es.以以“辅辅音音+y “结结尾尾变变y 为为i再加再加es.直接加直接加ed.以以e结结尾只加尾只加d.重重读辅读辅元元辅辅,双写尾字母再加双写尾字母再加ed.以以辅辅音音+y结结尾尾变变y 为为i 再加再加ed.谓语动词方方式式 have - look - begin- use- shop- get- dance- study-如今分词如今分词普通如今时普通如今时 第三人称单数第三人称单数过去式过去式study-finish-have-
3、go-do-play-watch-give-need-stop-hope-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如今进展时如今进展时普经过去时普经过去时动词方式的变化动词方式的变化标志词标志词如今如今进展展时 now , Look! Liste
4、n! at this time Where is ? Its 8:00 am. 标志词标志词普通如今普通如今时 always , usually, often, sometimes , every day, three times a day等表达频度的副词常在普通如今时态中运用。 标志词标志词普普经过去去时 last night ，two days ago ， in 1999 过去的年份，yesterday， just now =a moment ago刚刚，the day before yesterday 判别以下时间状语属于哪种时态判别以下时间状语属于哪种时态last night now
5、 every day Look!yesterday often Listen!two years ago always in 1897three times a week普通如今时普经过去时如今进展时变否认句的方法：变否认句的方法：首先看有无首先看有无 be 动词动词，假，假设设有，在有，在be 动词动词后面加后面加not.如：如： He is a teacher. He isnt a teacher.主主语+dont/doesnt/didnt+动词原形原形如：如：She went to Paris yesterday. She didnt go to Paris yesterday假假设设没
6、有没有be 动词动词，看原句的，看原句的动词动词方式来决方式来决议议借用助借用助动词动词do/does/did,并在后面加并在后面加not,并且并且动词动词要复原。要复原。变普通疑问句的方法：变普通疑问句的方法：首先看有无首先看有无be动词动词，假，假设设有，将有，将be提到句首并提到句首并大写，句末打大写，句末打问问号号.如：如： He is a teacher. Is he a teacher？假假设设没有没有be动词动词，看原句的，看原句的动词动词方式来决方式来决议议借借用助用助动词动词do/does/did,并且并且动词动词要复原。要复原。动词-原形原形动词-s/es动词-ed+动词动
7、词原形原形?DoDoesDid如：如：She went to Paris. Did she go to Paris？ 对比对比时态时态动词形式动词形式否定句否定句一般问句一般问句现在进现在进行时行时 一般现一般现在时在时一般过一般过去时去时三种句式的对比三种句式的对比be+动词动词-ing(如今分如今分词词 在在be 后后加上加上not Be提到提到句首句首动词 -原形原形动词-第三第三人人单数数在行在行为动词前借用前借用do ,does后加后加not，行行为动词复原复原Do,Does 提提到句首，到句首，行行为动词为动词复原复原动词-ed(过去式去式在行在行为动词前借前借用用did后加后加n
8、ot，行行为动词复原复原Did 提到句提到句首，行首，行为为动词动词复原复原判别时态方式：判别时态方式：1.He always likes playing the piano.( )2.We are having an English classes now.( )3.They often go home late.( )4.Lucy danced the disco at the party last night.( )5.I liked go to the zoo when I was young.( )6.My teacher is friendly to us.( )7.Look! T
9、hey are playing football.( )8.She was born in 1990.( )9.I lost much money last night. A.如今进展时B.普通如今时C.普经过去时ABCABBCCC1.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.Is he a teacher?He isnt a teacher.Does Ka
10、ngkang 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 guitar last night.先先变普普通通疑疑问句句再再变否否认句句用所给动词的适当方式填空。用所给动词的适当方式填空。1.
11、Listen! She _ ( sing) now.2. The man _ (run) along the street now.3. My mother _(watch) TV play every day.4. Old Bush _(visit) China again last month. is singing is running watches visited中考链接中考链接1.-What do you do? -Im an engineer.I_in a company in Wuhan. A. work B. had worked C.will work D.worked 2
12、.-Alice,turn down the TV, please.I_ on the phone. -Oh, Im sorry. A. have talked B. talked C. am talking D.talk中考链接中考链接3.Karin found some waste paper on the floor. She _ it _ and threw it into the dustbin. A. put ; up B. picked ; up C. turned ; up D. looked ; up4.Today is Fathers Day. My mother _ a s
13、pecial dinner for my grandpa now. A. prepare B. prepared C. is preparing D. will prepred 中考链接中考链接5.-_ the girls _you a warm welcome? -Yes, they did. A. Did ; give B. Do ; give C. Did ; gave D. Does ; give 6.I usually _ school at 7:30 in the morning and _ home at 5:30 in the afternoon. A. get ; get B. get to ; get to C. get ;get to D. get to ; get
