初中英语时态讲解及练习.ppt

1、初中语法专题（一） 时态,一般现在时 一般过去时 现在进行时 过去进行时 现在完成时 过去完成时 一般将来时 过去将来时,一般现在时,一、一般现在时： 概念：经常、反复发生的动作或行为及现在的某种状况。 时间状语： always, usually, often, sometimes, every week (day, year, month), once a week, on Sundays, etc. 基本结构：be动词；行为动词 否定形式：am/is/are+not;此时态的谓语动词若为行为动词，则在其前加dont,如主语为第三人称单数，则用doesnt，同时还原行为动词。 Helikes

2、music.Hedoesntlikemusic. 一般疑问句：把be动词放于句首；用助动词do提问，如主语为第三人称单数，则用does，同时，还原行为动词。Doeshelikemusic?,什么情况下用？,表示经常或习惯性的动作或存在的状态。 Theygohomeonceaweek. 表示主语通常的能力、兴趣爱好、和性格特征。 I like reading. 表示客观的事实或真理。 Thesunalwaysrisesintheeast.,. 表示按照时刻表或已经计划安排好的将来行为。（只限于是go, come, leave, arrive, begin, start, take off, st

3、op, be等表示开始或移动意义的词。） 在时间状语从句和条件状语从句中，主句用一般将来时(will+动词原形)，从句中用一般现在时表将来。（主将从现） Lucy will be at home if it rains tomorrow.,动词第三人称单数形式变化规则,1. He_(be, am, is, are) a teacher at No. 2 Middle School. 2. He_(have, has) classes in the afternoon. 3. He_(get, gets) up at half past six every morning. 4. He alwa

4、ys _(come, comes ) to school on time. 5. He _(study, studies) very hard at his lesson. 6. One and two _(be, is, are) three. 7. Blue and yellow _(make, makes) green. 8. The earth _(move, moves) round the sun. 9. I will go there if I _( be, will be, am, is, are) free tomorrow.,我们经常在晚上8点看电视。 Wealwayswa

5、tchTVat8:00intheevening. 我不喜欢红色的鞋。 I dont like red shoes.,2020/8/17,一般过去时,概念：过去某个时间里发生的动作或状态；过去习惯性、经常性的动作、行为。 时间状语：ago, yesterday, the day before yesterday, last week(year, night, month), in 1989, just now, at the age of 5, one day, long long ago, once upon a time, etc. 基本结构：be动词；行为动词 否定形式：was/were+

6、not;在行为动词前加didnt，同时还原行为动词。 Hesmokedlastyear.Hedidntsmokelastyear. 一般疑问句：was或were放于句首；用助动词do的过去式did 提问，同时还原行为动词。 Didhesmokelastyear?,1. He_(be, was, were, been) here a moment ago. 2. They _(be, was, were, been) here just now. 3. The scientists _(leave, leaves, leaved, left) for America yesterday. 4.

7、Last week we _(visit, visited ) the Science Museum. 5. When I was a child, I often _(play, played) football. 6. The students ran out of the classroom as soon as the bell _(ring, rang, rung).,当我是个孩子的时候，我经常在街上踢足球。 WhenIwasachild,Ioftenplayedfootballin thestreet. 4我昨天完成作业了。 I finished the homework yest

8、erday.,2020/8/17,现在进行时,作谓语的动词用来表示动作（情况）发生时间的各种形式称为时态。 1.概念：表示现阶段或说话时正在进行的动作及行为。 2.时间状语：Now, at this time, days, look. listen等时间状语做标志。 3.基本结构：主语+be +doing +其他 4.否定形式：主语+be +not +doing+其他 5.一般疑问句：把be动词放于句首。,6. 用法：现在进行时表示 1)、现在（说话的瞬间）正在进行或发生的动作，强调“此时此刻”。 E.g. He is reading . They are talking now. 2)、当前

9、一段时间内的活动或现阶段正在进行的动作。 E.g. They are working these days. 3)、 某些动词的现在进行时，表预定的计划或即将发生的动作。 E.g I am coming.,现在分词的变法有 1)、一般在动词词尾加上-ing ,E.g. jump 2)、以不发音字母e结尾的动词，先去e，再加-ing. E.g have write 3)、.以重读闭音节末尾只有一个辅音字母结尾的词，它前面是单个元音字母时要先将词尾的辅音字母双写，再加上-ing. E.g. sit put 其句式变换都在be上做文章。,1.I _(write, am writing, is wri

10、ting, are writing) a letter now. 2.Look, it _(begin, is beginning, am beginning, are beginning) to rain. 3.They _(study, is studying, am studying, are studying) medicine at the Medical Institute of Chengde these days. 4.He _(teach, am teaching, is teaching, are teaching) an English lesson at this ti

11、me.,5.我妈妈在做家务。 My mother was doing housework. 6.老师正在教我们如何用电脑。 The teacher was teaching us how to use computer.,2020/8/17,过去进行时,1.概念：表示过去某段时间或某一时刻正在发生或进行的行为或动作。 2.时间状语：at this time yesterday, at that time或以when引导的谓语动词是一般过去时的时间状语等。 3.基本结构 主语+was/were +doing +其他 4.否定形式：主语+was/were + not +doing+其他 5.一般疑

12、问句：把was或were放于句首。(第一个字母大写） 其句式变化仍然要在be上做文章。,1.I _(cook, cooked, was cooking, were cooking) breakfast when you arrived. 2.What _you_( do, did, was.doing, weredoing) at this time yesterday evening? 3.We_(have, are having, had, were having) dinner when the doorbell rang. 4.While/ When/ As we_( have, ha

13、d, are having, were having) dinner, the doorbell rang.,7. 昨天下午四点你们在打篮球吗？ Wereyouplayingbasketballatfouryesterdayafternoon? 8.他看书时睡着了。 Hefellasleepwhenhewasreading.,2020/8/17,一般将来时,构成:will,shall+动词原形，其中shall只用于第一人称。 be going to +动词原形，表示主观打算，按计划，安排要发生的事情。 be to +动词原形，表示客观安排 be about to +不定式，意为马上要做某事，正

14、要做某事。(不可与副词连用） 某些动词，可用进行时态表将来，如come, go, arrive, leave。 在时间状语从句和条件状语从句中，主句用一般将来时(will+动词原形)，从句中用一般现在时表将来。,否定形式：主语+am/is/are not going to do ；主语+will/shall not do+其他 一般疑问句：be放于句首；will/shall提到句首。 e.g. She will be back in three days. She will not be back in three days. Will She be back in three days?,1

15、 _you _a doctor when you grow up? A Will; going to be B Are; going to be C Are; / D Will; be 2 I dont know if his uncle _. I think he _ if it doesnt rain. A will come; comes B will come; will come C comes; comes D comes; will come 3 He will be back _a few minutes. A with B for C on D in 4 What time

16、_we meet at the gate tomorrow? A will B shall C do D are 5 He will have a holiday as soon as he _the work next week. A finishes B doesnt finish C will finish D wont finish,6 There _some showers this afternoon. A will be B will have C is going to be D are going to have 7 It _my brothers birthday tomo

17、rrow. She _a party. A is going to be; will have B will be; is having C will be; is going to have D will have; is going to be 8 Li Ming is 10 years old now, next year he _11. A is B is going to be C will be D will to be,过去将来时,构成：（would + 动词原形，或将来时的其它过去构成形式was going to do） 表示以过去某一时间为参照，在过去看将要发生的动作或存在的

18、状态。在宾语从句及间接引语中，时态呼应，经常会用到过去将来时。如I thought it was going to be fun. 时间状语：-soon/the next day-that-clause(名词性从句或上下文中-),1.I told my friend that I _ (should/ would arrive, shall/ will arrive) soon. 2.They looked at those clouds over the sky. It_(is going to rain, was going to rain).,现在完成时,1.概念：表示发生在过去，持续到

19、现在，可能刚刚结束也有可能继续进行下去的动作或状态，甚至延续到将来；或发生在过去，对现在造成一定的影响或结果。常与since+过去时（间）, for+一段时间连用。表示与现在有联系的过去的动作。 2.时间状语： recently, already, yet, just, never, ever, so far, by now, since+时间点，for+时间段，lately, in the past few years, etc. 3.基本结构：主语+have/has +p.p（过去分词）+其他,4.否定形式：主语+have/has + not +p.p（过去分词）+其他 5.一般疑问句：h

20、ave/has+主语 +p.p（过去分词）+其他?,have （has）been 和have （has） gone 的区别 have been to a place意思是“到过、去过”，表示曾到过某处，但现在人不在那儿；have gone to a place表示“去了”，已经去了某地，现在人可能在去的途中或已经到那儿了。,You have _ a tall young man. A grown B grown into C grown us D grown up 2. He has _ the watch for a year. A buy B bought C have D had 3.

21、Has your brother _ the dog? A kept in B fed C fed on D kept on 4. I _this book for two weeks, I have to return it now. A borrowed B have borrowed C kept D have kept 5. Have you ever _to the Great Wall? Its very beautiful. A gone B been C went D go 6. Her brother _the Party since 1978. A joined B has

22、 joined C has been in D was in 7. The Greens _many places of interest since they came to China. A will visit B visited C have visited D visit,8 Im sorry, I _ your name. A had forgotten B forgot C have forgotten D forgotten 9 The bookshop _ for eight years. A has been open B has been opened C has ope

23、ned D has open 10 We have_ all the paper so we need to buy some. A used up B made of C filled with D hunted for 11 The flower I _grown up. A planted has B planted have C has planted D have planted,巧解现在完成时态题,技巧1:寻找现在完成时中的“段时间”。 (1) 现在完成时表示过去已经开始并持续到现在的动作或状态,多和表示一段时间的状语连用:for+一段时间;since+点时间(since作连词后接

24、从句时,该从句要用一般过去时) 。 (2) 现在完成时态也用在含有during / in/ over the last years或in recent years等的句子中。,趁热打铁,1. The Oriental Pearl TV Tower _ tens of thousands of visitors since 1995. attracted B. attracts C. has attracted D. will attract 2. How long _ you _ here? For about two years so far. have, studied B. did, l

25、ive C. do, stay D. were, swimming 3. How is your father? I _him for a long time.He is fine, but busy. dont see B. hadnt seen C. didnt see D. havent seen 4. Meimei has received several letters from her hometown since she _ to the city. A. cameB. comes C. has comeD. will come,技巧2:寻找现在完成时的副词标志或句型。 (1)

26、在做时态题时,注意观察句中是否有常用于现在完成时的副词:yet, already, never, lately, recently, ever, just, before, (ever) since等。 (2) 句型:It has been + 段时间+since + 过去时. 也可以表示为: It is + 段时间+since + 过去时.,9.自五个月前我就在这儿了。 Ihavebeenheresincefivemonthsago.,2020/8/17,过去完成时,过去完成时 1、概念：过去完成时表示在过去某一时间或动作之前已经发生或完成了的动作，即“过去的过去（ past-in-the-past ）”。 -|- |-|- 那时以前 那时 现在 2、构成：过去完成时由“助动词 had + 过去分词”构成，其中 had 通用于各种人称。 They had already had breakfast before they