定义表示形式。
现在时。经常发生的动作或经常存在的状态，日常行为或习惯或客观事实。
第。一、二人称单复数，第三人称复数+动词原形第三人称单数+动词原形+s
过去时。过去某段时间发生的动作或存在的状态。
将来时将来的事实。
第一，二和三人称+will(shall,bedoingto)+动词原形tomorrow,nextyear,thedayaftertomorrow,inafewdays
theywillcomebacknext sunday.
whatshallwedonext?
i am going to call youthis evening.
fromnowonhewillreadenglisheverymorning.
theywillnotcomeback next sunday?
yes,theywill./no,they will not.
第一，二和三人称+动词原形+ed
yesterday,lastnight(week,year),then,atthattime(moment),justnow,during,afewdays(weeks,months,years)ago,以及after,before,when,while和whenever等引导的表示过去的时间状语。
it happened at 3 years ago.
last night i went home at half past used to smoke very he**ily.
we went to the park the day before yesterday today.
一般过去时可以用来表示现在的时间，这主要用于日常会话，使用的语气较为婉转和客气。i wanted to ask if i could borrow your bike.
时间状语。everyday, always, often
一般。举例。
he goes to school everyday.
he often plays table tennis after moon moves around the earth.表示主语的特征，性格，能力等she is an chinese.
在时间状语从句和条件状语从句中，或在谈论到计划，规定，安排或时刻时。
if it rains tomorrow we will stay at home.
否定句，一般疑问句he does not go to school he go to school everyday?yes, he is. /no, he is did not happen at 3 years it not happen at 3 years ago?
yes, it is. /no, it is not.
定义表示形式时间状语。
现在正在进行的动作be +动词ing
now, at present, at this moment, these days
what are you reading now?i am reading the english are you doing these days?i am writing a story at present.
hurry up! we are all waiting for the car is crossing the road.
用现在进行时表将来，仅动词go,come,le**e,arrive,fly,return, sleep.
a visitor is coming to our school.
表示感觉（see,hear,smell,taste,feel,notice,look,seem,appear），情感(hate，love, fear, like, want, wish, prefer, refuse,forgive），存在(exist, remain, stay, obtain)，从属(h**e, possess,own, belong, consist of, form )和思维。
理解(understand, know, believe, think, doubt, forget, remember)的动词不能用进行时。
i am not reading the english you reading the english book?yes, i am. /no, i am not.
过去某一时刻或过去某一阶段内进行的动作was/were+动词ing
then, at that time, at nine last night
动词be的人称用法i am/h**e
we / they are/h**ehe/she/it is/has
动词的第三人称单数以s，z，ch，sh，x字母结尾，后面+es
动词过去式过去分词：
直接+ed以e结尾，加d（lived，hoped）ⅲ辅音+y，变y为i+ed（carried，cried）
重读闭音节结尾，ⅴ末尾只有一个辅音字母的词，双写辅音字母+ed（fitted，dropped，stopped）
进行。举例。
iwasdoingmyhomeworkateighto’clockyesterdayevening.
he was falling asleep at nine last night.表示移动的动词（go, come, star, stay, le**e, fly）的过去进行时，可以表过去将要发生的动作he did not say when she was going.
she asked whether he was starting the next day.
在有when, while引导的时间状语从句中，两个动作在过去的某时间用时发生，用过去进行时表示长的动作。从句用过去时，主句用现在时。
the children were le**ing school when they saw a mary was cooking, the bell rang.
some students were playing football while i was walkingaround the playground.(一边，一边)
i was not doing my homework at eight o’clock yesterdayevening.
wereyoudoingyourhomeworkateighto’clockyesterday evening?
yes, i was. /no, i was not.
否定句，一般疑问句。
定义表示形式时间状语。
发生在过去的动作，但对现在有影响（或结果）。第。
一、二人称单复数，第三人称复数+ h**e+动词ed第三人称单数+has +动词ed
already，yet, just, since，ever, once, before, 3 times表结果we h**e lived in shanghai.
he has seen the movie h**e already post the photos.
表继续they h**e lived here since is….since…..
it has been 10 years since i left school.表经历i h**e been to beijing before.
we h**e not lived in you lived in shanghai?yes ,i h**e. no, i h**e not.
动作的完成是在过去的某一段时间。
重点1：表示短暂性动词（appear,begin,borrow,buy,close,需有一个表示过去的时间。
come,die,fall,find,finish, join, kill, le**e,lend, sell, start, stop）
ihadfinishedmyhomeworkbefore9o’clockyesterday
不能与一段时间状语。
evening.
连用。he had left when we arrived there.
重点2：非持续性动。
by the end of last year i had been to beijing 4 times.
词的否定形式可以表。
when we got to the cinema the movie had begun.
示状态的延续，可与since，for连用。i h**e
ihadnotfinishedmyhomeworkbefore9o’clocknotseenhimfora
long evening.
hadyoufinishedyourhomeworkbefore9o’clockshe has not left home
since she lost her evening？had +动词ed
yes ,i had. no, i had not.完。成。
举例。否定句，一般疑问句。
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