现在完成时用法归纳.doc
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1、如有侵权,请联系网站删除,仅供学习与交流现在完成时用法归纳【精品文档】第 10 页现在完成时用法归纳现在完成时(Present perfect)过去发生并且已经完成的动作对现在造成影响或后果,过去某一时间开始并一直持续到现在的动作或状态。 句型基本结构:主语+have/has+动词的过去分词(done) 肯定句:主语+have/has+动词的过去分词+宾语. 否定句:主语+have/has+not+动词的过去分词+宾语. 一般疑问句:Have/Has+主语+动词的过去分词+宾语. 特殊疑问句:特殊疑问词或词组+一般疑问句(have/has+主语+过去分词+其他) 定义:(1) 强调动作是过去发
2、生的 (2) 强调对现在的影响或结果 (3) 在过去不确定的时间里发生的动作,但是结果对现在有影响。 但过去分词一定要选择准确。 规则动词1 、规则动词:规则动词的过去分词的构成规则与规则动词的过去式的构成规则相同。四点变化规则: (1)、一般动词,在词尾直接加“ ed ”。 work-worked-worked ,visit-visited-visited (2)、以“ e ”结尾的动词,只在词尾加“ d ”。 live-lived-lived , (3)、以“辅音字母 + y ”结尾的动词,将 y 变为 i ,再加“ ed ”。 study-studied-studied ,cry-cri
3、ed-cried (4)、重读闭音节结尾,末尾只有一个辅音字母,先双写该辅音字母,再加“ ed ”。 stop-stopped-stopped , drop-dropped-dropped 不规则动词2 、不规则动词: AAA型 原型 过去式 过去分词 burst burst burst cast cast cast cost cost cost cut cut cut hit hit hit hurt hurt hurt put put put set set set shut shut shut spread spread spread let let let read read read
4、 led led led AAB型 beat beat beaten ABA型 become became become run ran run come came come 特殊情况 read read read read原形发音为/ri:d/,过去式和过去分词发音为/red/ ABB型 bring brought brought buy bought bought build built built burn burnt burnt catch caught caught dig dug dug feel felt felt fight fought fought find found f
5、ound feed fed fed get got got hang hung hung hear heard heard hold held held keep kept kept lay laid laid lead led led lose lost lost leave left left lend lent lent make made made mean meant meant meet met met pay paid paid sell sold sold shoot shot shot say said said sit sat sat stand stood stood s
6、hine shone shone sweep swept swept sleep slept slept teach taught taught tell told told think thought thought win won won ABC型 begin began begun blow blew blown break broke broken choose chose chosen draw drew drawn drive drove driven drink drank drunk fly flew flown forgive forgave forgiven forget
7、forgot forgotten freeze froze frozen give gave given grow grew grown know knew known ride rode ridden rise rose risen ring rang rung shake shook shaken sing sang sung sink sank sunk swim swam swum throw threw thrown write wrote written 用法(1)现在完成时用来表示现在之前已发生过或完成的动作或状态,但其结果却和现在有联系,也就是说,动作或状态发生在过去但它的影响
8、现在还存在. I have spent all of my money.(含义是:现在我没有钱花了.) Jane has laid the table.(含义是:现在桌子已经摆好了.) Michael has been ill.(含义是:现在仍然很虚弱) He has returned from abroad. (含义是:现在已在此地) (2)现在完成时可以用来表示发生在过去某一时刻的,持续到现在的动作(用行为动词表示)或状态(be动词表示)常与for(+时间段),since(+时间点或过去时的句子)连用. for+时段 since+过去一个时间点(译为:自从以来) since+时段+ago
9、since+从句(过去时) It is+时段+since+从句(过去时) Mary has been ill for three days. I have lived here since 1998. 注:瞬间动词(buy,die,join,lose)不能直接与for since 连用。要改变动词 come/arrive/reach/get to-be in go out-be out finish-be over open-be open die-be dead 1.have代替buy My brother has had(不能用has bought) this bike for almos
10、t four years. 2、用keep或have代替borrow I have kept(不能用have borrowed) the book for quite a few days. 3、用be替代become How long has your sister been a teacher? 4、用have a cold代替catch a cold Tom has had a cold since the day before yesterday. 5、用wear代替put on b)用“be形容词”代终止性动词 1、bemarried代marry 2、beill代fall (get)
11、 ill 3、bedead代die 4、beasleep代fall (get) asleep 5、beawake代wake/wake up 6、begone代lose,die,sell,leave 7、beopen代open 8、be closed代close/shut 9、bemissing(gone,lost)代lose c)用“be副词”代终止性动词 1“beon”代start,begin 2“beup”代get up 3“beback(to)”代return to,come back to,go back to 4“be here (there)”代come(arrive,reach,
12、get) here或go (arrive,reach,get) there等等 d)用“be介词短语”代终止性动词 1.“be in/at +地点”代替go to /come to 2.用be in the army 代替join the army 3.“be in/at +地点”代替move to 常用瞬间动词变延续性动词表 1. have arrived at/in sw. got to/reached sw. come/gone/moved to sw. have been in sw./at相应的介词 2. have come/gone back/returned have been
13、back 3. have come/gone out have been out 4. have become have been 5. have closed / opened have been close/open 6. have got up have been up; 7. have died have been dead; 8. have left sw. have been away from sw. 9. have fallen asleep/got to sleep have been asleep; 10. have finished/ended/completed hav
14、e been over; 11. havemarried have been married; 12. have started/begun to do sth. have done sth. ; 13. have begun have been on 14. have borrowed/bought have kept/had 15. have lost havent had 16. have put on have worn 17. have caught /get a cold have had a cold; 18. have got to know have known 19. ha
15、ve/has gone to have been in 20. have joined/have taken part in the league/the Party/the army have been a member of/ have been in/have been the Partys member/the league member/the soldier 用法注意: 1.现在完成时不能单独与准确时间连用,(如表示过去的时间状语) 如yesterday(morning、afternoon),last(morning、afternoon)等,除非与for,since连用. 2.现在
16、完成时往往同表示不确定的过去时间状语连用 ,如already(肯定), yet(否定,疑问), just, before, recently,still, lately等: He has already obtained a scholarship. I havent seen much of him recently (lately). We have seen that film before. Have they found the missing child yet ? 3. 现在完成时常常与表示频度的时间状语连用, 如often, sometimes, ever, never, tw
17、ice, on several occasion等: Have you ever been to Beijing I have never heard Bunny say anything against her. I have used this pen only three times. It is still good. George has met that gentleman on several occasions. 4. 现在完成时还往往可以同包括现在时间在内的时间状语连用, 如now, up to these few days/weeks/months/years, this
18、morning/week/month/year, just, today, up to present, so far等: Peter has written six papers so far. Man has now learned to release energy from the nucleus of the atom. There has been too much rain in San Francisco this year. The friendly relations and cooperation between our two countries have been e
19、nhanced in the past few years. Up to the present everything has been successful. 5. 现在完成时还可以用来表示过去的一个时间到现在这段时间内重复发生的动作. We have had four texts this semester. 6.现在完成时的完成用法 现在完成时的完成用法指的是动作发生在过去某一时刻并已结束,但该动作对现在产生了影响,与现在情况具有因果关系。 例如:He has turned off the light.他已把灯关了。(动作结束于过去,但说明的是现在的情况-灯现在不亮了。) 现在完成时完成
20、用法的特点是动作不延续,因此,该时态只能与表示不定的过去时间状语(如:already,yet,before,recently等)、频度时间状语(如:never,ever,once等)、包括现在时刻在内的时间状语(如:this morning month year.,today等)连用。 例如: Have you found your pen yet?你已找到你的钢笔了吗? 7.现在完成时的未完成用法 现在完成时的未完成用法指的是动作开始于过去某一时刻,一直延续到现在,或可能还要继续下去。 例如:He has lived here since 1978.自从1978年以来,他一直住在这儿。(动作
21、起始于1978年,一直住到现在,可能还要继续住下去。) I have been in the army for more than 5 years.我在部队已经呆了五年多了。(动作开始于5年前,一直延续至今,有可能还要继续下去。) 此种用法的句中常需一个表示一段时间的状语(由since或for引导),或表示与现在时刻相连的时间状语(如:up to now,so far)等。 例如:I have heard nothing from him up to now.到目前为止我没有他的任何消息。 注意:(1)现在完成时的未完成用法只适用于延续性动词,不可用于终止性动词,即瞬间完成或延续时间很短的动词
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