1、英语八种基本时态一概念：英语中表示不同时间发生的动作或存在的状态，需用不同的动词形式表示，这种不同的动词形式称为时态。二种类：（基本时态）一般现在时 一般过去时 现在进行时 过去进行时一般将来时 过去将来时现在完成时 过去完成时三用法：1一般现在时：1）一般现在时表示经常发生或习惯性的动作或状态及客观现实和普遍真理。一般现在时常以动词原形表示，但当主语是第三人称单数时，动词词尾加-s或-es 。2）句型结构：主语.（包括 be 动词）宾语She is an engineer.He has breakfast at 6:00every day.3）注意：a)一般现在时通常与 always , o
2、ften , usually , every day , sometimes , once a week等时间状语连用。I always watch TV at 8:00 in the evening .They go home once a week .We usually do our homework at home .b)表客观现实或普遍真理。The sun always rises in the east .The light travels faster than the sound .c)表永远性的动作或状态。He lives in the country .4）第三人称单数变化
3、形式。a)一般情况动词在词尾加-s .come-comes speak-speaks work-works live-livesb)以 o, s, x, ch, sh 结尾的单词在词后加-es.do-does go-goes finish-finishes brush-brushes fix-fixes pass-passes watch-watchesc)以 “辅音字母 y”结尾的单词变 y 为 i 加-es.Study-studies carry-carries cry-criesd)以“元音字母y” 结尾的单词直接加 -s.play-plays stay-stays例句：我们每天晚上九点
4、做作业。我在早上七点半起床。他每天七点去上班。我们经常下午打篮球。他喜欢音乐。地球围绕太阳转。火车六点出发。5）否定句和疑问句。a)-He is an engineer.-He isnt an engineer.-Is he an engineer?-Yes, he is ./ No, he isnt.b)-We get up at 7:30 in the morning .-We dont get up at 7:30 in the morning .-Do you get up at 7:30 in the morning ?-Yes, we do. / No, we dont.c)-He
5、 likes music.-He doesnt like music.-Does he like music?-Yes ,he does./ No, he doesnt .2一般过去时1）一般过去时表示发生在过去的动作或存在的状态，通常与表示过去的时间状语 yesterday, last night ,some years ago, in 1990,in those days.等连用。I was a student 6years ago.I went to Beijing last year.They saw a film last night .2）句型结构：主语.过去时宾语例句：昨天他很忙
6、。去年他抽烟了。两年前他去参军了。他在 1990 年去世了。3）否定句和疑问句。a)-He was busy yesterday.-He wasnt busy.-Was he busy?-Yes, he was./ No, he wasnt.b)-He smoked last year.-He didnt smoke last year.-Did he smoke last year?-Yes ,he did ./No ,he didnt.c)-He joined the army in 1990.-He didnt joined the army in 1990.-Did he join t
7、he army in 1990?-Yes ,he did ./No ,he didnt.4）动词过去式变化规则。a)一般情况下的词加-ed.work-worked call-called laugh-laughed Explain-explained finish-finished knock-knockedb)以不发音的字母 e 结尾的单词直接加 -d .live-lived change-changed smoke-smoked die-diedgraduate-graduated drive-drovec)以 “辅音字母y”结尾的单词，变 y 为 i 加-ed.study-studied
8、 carry-carried cry-cried try-tried marry-marriedd)以“元音字母y” 结尾的单词直接加 -ed.play-played stay-stayede)以 “一个元音字母一个辅音字母”结尾的单词应先双写这个辅音字母然后再加-ed.stop-stopped plan-planned pat-pattedf)动词不规则变化：do-did go-went come-came run-ran write-wrotebegin-began drink-drank keep-kept leave-left sleep-sleptmake-made lie-lay
9、dig-dug eat-ate know-knew cut-cut set-set let-let read-read hurt-hurt例句：我前天拿走了这本书。去年我买了一辆自行车。每天晚上我听音乐。她通常待在家里。两天前我完成了这项工作。复习：1) I (be) a teacher 2 years ago.2) He (be) a student now.3) He (do) his homework at home every day.4) They (join) the Party in 1998.5) We (not eat) apples yesterday.6) We (not
10、 play) basketball every day.7) He (not go ) home once a week.8) I am 16 years old. (划线部分提问)9) I go to work at 8:00 every morning. (划线部分提问 )10) They joined the Party in 1990. (划线部分提问)11) I went to Beijing last year. (划线部分提问)3一般将来时1)表示将来发生的动作或存在的状态，常与表将来的时间状语 tomorrow, the day after tomorrow, next Sun
11、day, soon, in a few days 等连用。2)句型结构：主语will/shallV.原形（第一人称用 shall）I shall go to Shanghai tomorrow.They will have a meeting next week.-She will be 20 years old.-Will she be 20 years old?-Yes, she will./ No, she wont .3)主语 will/shallV.原形be(am, is, are)going toThey will have a meeting next Sunday.(will=
12、are going to )-What will they do next Sunday ?-When will they have a meeting?4) be about toV.原形I am about to leave school.不能与表示时间的副词连用。They are about to set out.()They are about to set out soon.()复习题：1.He (do) his homework at school every day.2.They (finish) their work yesterday.3.We (visit) their f
13、arm next year.4.我半小时后要吃午饭。5.他将骑自行车去学校。6.他们下周日将去买汽车。4过去将来时1）过去将来时是立足于过去某时，从过去的观点看将要发生的动作或状态。主要用于宾语从句中。2）基本结构：主语+would/should was/were going to +V.原形+He said that he would have a meeting next week.(He says that he will nave a meeting next week.)They said we should leave school tomorrow.(They say we sh
14、all leave school tomorrow.)5现在进行时1)现在进行时表示现在或现在这段时间正在进行的动作。通常与 now, at present 等时间状语连用。2)基本结构：主语+be(am, is, are)+ v-ing +You are listening to me carefully now.She is writing a letter this year.Look! They are dancing.We are studying English at present .Its raining hard now.3）动词现在分词的构成 一般动词直接在词后加-ingd
15、o doing read - readingwork working think thinkingstudy studying go goingwatch watching jump - jumping 以不发音的字母 e 结尾的动词，应先去掉 e 然后加 inglike liking take takingleave leaving live livingreceive receiving dance dancingcome coming smoke smokingwrite - writing 以“一个元音字母 + 一个辅音字母”结尾的动词，应先双写这个辅音字母然后再加-ingstop s
16、topping begin beginningdig digging swim swimmingrun running sit sitting(注意：listen listening open opening eat eating rain raining sleep - sleeping)4)6 过去进行时1） 表示过去某一时刻或某阶段时间正在进行的动作， 通常与 at 6:00 yesterday, at this/ that time yesterday, when 引导的时间状语等连用。2） 基本结构 主语+be (was/were) +v- ing +1. It was rainin
17、g at 7:00 the day before yesterday.2. They were building a reservoir at this time last winter.3. We were reading when the teacher came in.We werent readingWere you readingWhat were you doing when the teacher came in.3) 例句 1. 前天那个时候 Tom 正在看电影。2. 上周日四点我们正在游泳。3.师看见我们时我们正在玩扑克。4. I _ (do) my homework yes
18、terday.5. He _ (do) his homework at 5:00 yesterday.6. He _ (do) his homework now.7.现在完成时1） 1. 表示过去发生的动作对现在造成的影响2表示过去某时间已经开始一直持续到现在的动作或状态通常与下列时间状语连用 up to now, in the past, recently, by , for 5 years, since 1994, so far, already, yet, ever, just2) 基本结构 主语+ have/has + P.P(动词过去分词)1. Ive finished this w
19、ork.2. He has ever been to Australia.3. I have not heard from her recently.4. I have already read this book.Have you read?Yes, I have. No, I havent.What have you read?3) 过去分词的构成 （规则变化同过去式的构成）不规则变化如下 do did donego went goneeat ate eaten come came comehave had hadwrite wrote writtenbe was/were beensee
20、 saw seenhear heard heardswim swam swumdrink drank drunk give gave givenforget forgot forgottentake took takenkeep kept keptsleep slept sleptteach taught taughtbuy bought boughttell told toldmake made madecut cut cut hurt hurt hurtread read read let let let4） 注意1. 含有终止意义或暂短意义的动词不能与 for, since 引导的一般时
21、间状语连用。（buy, begin, die, come, go , join, leave 等）A) I have bought a book.I have bought a book for 3 day. (wrong)I have had a book for 3 years.B) He have joined the army for 3 years. (wrong)He has been in the army for 3 years.He joined the army 3 years ago.C) He has been dead for 3 years.He died 2 ye
22、ars ago.It is 2 years since he died.He has died for 2 years. (wrong)D) He has gone to Australia.He has been to Australia.2. 现在完成时与一般过去时的区别 （时间状语的区别）I _ (hear) form her recently / yesterday.3. 例句：他已经阅读了这本书。我们到目前为止已学习了两千个单词。他们居住在中国三年了。他看这部电影两次了。Bob 自从 1997 年在这所学校教学。8.过去完成时1） 表示动作发生在过去某一时间之前已经完成的动作或状态，
23、 强调“过去的过去 ”， 常与 by the time, by the end of,before , by 等引导时间的状语连用。2） 基本结构 主语+ had + 动词过去分词 + When I got to the cinema yesterday the film had begun already.昨天当我到达电影院时电影已经开始了。He had learned English before he came here.他来这儿之前已经学会英语了。He had aught this class for 3 years by the time I left the school.当我离开
24、这个学校为止 他已教这个班级三年了。By the end of last term I had learned 2000 English words.到这学期末我已学会了 2000 个英语单词。时态部分总复习题 I. Fill in the blanks.1. We usually _ (get ) up at 7:00 every morning.2. She _ (watch) TV when she heard a loud knock at the door this time yesterday.3. My mother _ (come) here tomorrow.4. Look
25、! Some one _ (dance) there.5. Wei Huas brother _ (join) the army in 1995.6. He _ (write) a letter this afternoon.7. Rice _ (grow) in the south of China.8. She said _ (go) to Japan next year.9. We _ (study) 2,000 words since we came to the school.10. By the end of last term he _ (teach) that class for 2 years.
