现在完成时用法归纳

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)①肯定句：主语+have/has+动词的过去分词+宾语.②否定句：主语+have/has+not+动词的过去分词+宾语.③一般疑问句：Have/Has+主语+动词的过去分词+宾语.④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---cried---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 burstcast cast castcost cost costcut cut cuthit hit hithurt hurt hurtput put putset set setshut shut shutspread spread spreadlet let letread read readled led ledAAB型beat beat beatenABA型become became becomerun ran runcome came come特殊情况read read readread原形发音为/ri:d/,过去式和过去分词发音为/red/ABB型bring brought broughtbuy bought boughtbuild built builtburn burnt burntcatch caught caughtdig dug dugfeel felt feltfight fought foughtfind found foundfeed fed fedget got gothang hung hunghear heard heardhold held heldkeep kept keptlay laid laidlead led ledlose lost lostleave left leftlend lent lentmake made mademean meant meantmeet met metpay paid paidsell sold soldshoot shot shotsay said saidsit sat satstand stood stoodshine shone shonesweep swept sweptsleep slept sleptteach taught taughttell told toldthink thought thoughtwin won wonABC型begin began begunblow blew blownbreak broke brokenchoose chose chosendraw drew drawndrive drove drivendrink drank drunkfly flew flownforgive forgave forgivenforget forgot forgottenfreeze froze frozengive gave givengrow grew grownknow knew knownride rode riddenrise rose risenring rang rungshake shook shakensing sang sungsink sank sunkswim swam swumthrow threw thrownwrite 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.①for+时段②since+过去一个时间点（译为：自从……以来）③since+时段+ago④since+从句（过去时）●⑤It 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,di e,join,lose……）不能直接与for since 连用。

要改变动词come/arrive/reach/get to-----be ingo out----be outfinish----be overopen----be opendie----be dead………………★1.have代替buyMy brother has had(不能用has bought) this bike for almost four years.★2、用keep或have代替borrowI have kept(不能用have borrowed) the book for quite a few days.★3、用be替代becomeHow long has your sister been a teacher?★4、用have a cold代替catch a coldTom has had a cold since the day before yesterday.★5、用wear代替put onb)用“be＋形容词”代终止性动词1、be＋married代marry2、be＋ill代fall (get) ill3、be＋dead代die4、be＋asleep代fall (get) asleep5、be＋awake代wake/wake up6、be＋gone代lose,die,sell,leave7、be＋open代open 8、be closed代close/shut9、be＋missing(gone,lost)代losec)用“be＋副词”代终止性动词1“be＋on”代start,begin2“be＋up”代get up3“be＋back(to)”代return to,come back to,go back to4“be here (there)”代come(arrive,reach,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 to2.用be in the army 代替join the army3.“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 bac k/returned → have been back3. have come/gone out →have been out4. have become → have been5. have closed / opened→ have been close/open6. 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 → have been over；11. havemarried → have been married；12. have started/begun to do sth. → have done sth. ；13. have begun → have been on14. ha ve borrowed/bought →have kept/had15. have lost → haven’t had16. have put on →have worn17. have caught /get a cold → have had a cold；18. have got to know → have known19. have/has gone to → have been in20. have joined/have taken part in the league/the Party/the army→have been a member of/ have been in/have been the Party’s 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 haven't 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, twice, on several occasion等:Have you ever been to BeijingI 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 fewdays/weeks/months/years, thismorning/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 enhanced 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。