初中英语语法:各个时态的标志和时态间的区别.docx
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1、英语中各个时态的标志和时态间的区别一)一般现在时。(do/does,am/is/are,情态动词)a. 一般现在时表示的是客观事实或平时反复做的事情通常有频率副词always,usually, often, sometimes, seldom, once a week, every day 等。如:The earth goes around the sun.Japan lies east of China.He is never late fbr school.He often gets up at six every day.Cats can climb trees.I hear they
2、have moved into a new house.He writes to his father once a year.b.一般现在时还可以表示、安排好的,或即将发生的事,通常使用瞬间动词come,start,begin, return,leave 等。如:My plane leaves at 6:00 a.m.Is there any meeting today?The game starts at 8:00.(二)现在进行时。(am/is/are doing)a.现在进行时表示现在或最近正在做的事情,后面一般接延续性的动词,都表示动作没有进行完。如: Look! The boy i
3、s dancing.He is watching a football game.What are you doing now?They are preparing for the exam recently.b.还常与 always, usually, constantly, forever, continually 等词连用表示一种语气, “总是,老是”,如: He is always working late.Why are you always making this kind of mistake?He is continually getting into trouble with
4、 the police.c.后面接暂转动词时表示正在反复的动作,或表示将来时(一般只有go, come, leave 和 have)如:The monkeys are jumping.They are hitting the tree.表若来: We are going swimming this afternoon.They are leaving here.They are having an English class tomorrow.试比较:He is doing his homework until his parents come to take him home.He will
5、 do his homework until his parents come to take him home.注:表示知觉、感觉、看法、认识、情感或愿望的动词和大部分暂转动词不能用现在进行时。如: see, hear, smell, taste, feel, like, hate, dislike, want, love, hate, want, know, forget, remember, understand, believe, suppose, mean, wish, hope, need, believe, refuse, suppose, have, fit, seem, fe
6、ar, own 等(三)现在完成时a.现在完成时中用瞬间动词表示说话时已经完成的动作,而且这个动作对现在还有 影响,句中的时间副词主要有already, yet, now, by this time, by now ;用延续动词表示 过去已经开始持续到现在而且还有可能继续持续下去的动作,句中的时间副词主要有this week, in the past/last/recent few years, since., for.o如: He has already finished his homework.He hasnt arrived here yet.They have been here f
7、br ten years.He has waited here since he came.*与一般过去时比较,看下面一段对话:A: Have you seen my book? I think I have lost it.B: Yes, I(see) it on your table just now. But it(not be) there anylonger. Where and when you(lose) it?A: I think I(lose) it yesterday.B:you(find) it?A:.(Yes./No.)b.现在完成时中的瞬间动词与延续动词的相互转化:h
8、ave finished/stopped/endedhave started/begunhave joinedhave tumed/become/gothave lefthave arrived/reached/got tohave died一 have been over一 have been on have been in/a member of一 have been一 have been away from一 have been一 have been deadhave married/got married to sb. 一 have been married to sb.(四)一般将来
9、时。(will/shall do, am/is/are going to do, am/is/are doing, am/is/are about to do)a.一般将来时表示将要发生或打算做的事情,如: He will come back in two days.When will he give the book back to me?Its going to rain.We are going to hold a sports meeting next week.They are leaving for New York.He is about to leave.(五)一般过去时。(d
10、id, was/were,情态动词过去式)a.一般过去时表示在过去的某个时间发生的具体事情,一般都要有表示过去的时间状语,如: He went to school by bike yesterday.We had a good time last night.He could count to 1000 when he was three.He was a teacher before.注意:在直接引语转换成间接引语时时间状语的变化:如:He said, I did it yesterday.today yesterdaythe day before yesterdaylast week2 w
11、eeks agotomorrowone/a day laterthe day after tomorrowin a week/next weekin 2 weeks(六)过去进行时。(was/weredoing) He said he did it the day before.that day一 the/a/one day before一 2 days before the week before一 2 week before一 the next day/the day after 或2 days after/later一 the next week一 2 weeks after/later
12、a.过去进行时表示在过去的某个具体时间里正在发生的事情,如: He was reading newspaper at seven yesterday evening.The Smiths are watching TV at nine last night.When he got home, his mother was cooking.b.或过去的某段时间里持续发生的事情,如:I was studying English in London from 1990 to 1992.He was washing the dishes from seven oclock to seven thirt
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