现在完成时讲解及练习已用

1、现在完成时一. 基本结构：助动词have/has+过去分词（done）二. 句型：否定句：主语+have/has+not+过去分词+其他.一般疑问句：Have/Has+主语+过去分词+其他.三. 用法（1）现在完成时表示过去发生或已经完成的动作对现在造成的影响或结果I have spent all of my money.（含义是:现在我没有钱花了 .）They have come here.（含义：他们现在在这儿）（2）现在完成时可以用来表示发生在过去某一时刻的，持续到现在的动作或状态，常与for和si nee连用 for+时段 since+过去一个时间点（译为：自从以来） sin ce+

2、时段 +ago sin ce+从句（过去时） ltis+时段+since+从句（过去时）Mary has been ill for 3 days, （since 3 days ago）I have been in the university since 2002.四. has gone （to） ,has been （to） , has been （in）的区另 UHave/Has gone （to）法了（现在不在说话现场）Where is your father ? He has gone to Shanghai.Have/Has been （to）法过（已不在去 过的地方）My fath

3、er has bee n to Shan ghai.Have/has been in :呆了多久（还在所呆的地方）My father has bee n in Shan ghai for two mon ths. /since two mon ths ago.五. 现在完成时的标志现在完成时的含义是过去已经完成的动作对现在仍有影响，用以下四大标志词可以表达这种含义:以 already, just 和 yet 为标志He has already got her help.他已得到她的帮助。He has just seen the film.他刚刚看过这场电影。 以 ever禾口 never为标志

4、This is the best film I have ever see n.这是我曾经看过的最好的一部电影。He has never been to Beiji ng.他从没有至U过北京。以动作发生的次数为标志He says he has bee n to the USA three times.他说他已经去过美国三次了。以so far （到目前为止）为标志He has fini shed all of his work so far.到目前为止他完成了所有的工作 注意：1）现在完成时不能单独与过去的时间状语连用，如yesterday,last week, three years ago2

5、）不能与when连用burst hurt let cast cut hit put set shut spreadread原形发音为/ri:d/过去式，过去分词 发音为/red/ AAB型beat beat beaten ABA型become became becomerun ran run七. 瞬间动词变延续性动词(buy5die,join,come, go Jeavejoinbuy-have borrowkeepcome/arrive/reach/get tobe ingo out-beoutleave -beaway不能直接与for since连用。要改变动词beginbe onfin

6、ishbeoverope nbeope nclosebe closeddie-be dead六. 过去分词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。(1) 、一般动词，在词尾直接加“ ed ”。workworkedworked ,visitvisitedvisited(2) 、以“ e结尾的动词，只在词尾加“ d ”。livelivedlived ,、以辅音字母+ y结尾的动词，将”y”变为T，再加 ed ”。studystudiedstudied ,crycriedcried、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

7、 stoppedstopped , dropdropped-dropped2、不规则动词： AAA型come came comeABB型build built builtcatch caught caught feel felt feltABC型begi n bega n begu nbreak broke broken l.have 代替 buyMy brother has had this bike for almost four years. 2、用 keep 或 have 代替 borrowI have kept the book for quite a few days. 3、用 b

8、e 替代 becomeHow long has your sister been a teacher? 4 用 have a cold 代替 catch a coldyesterday.Tom has had a cold since the day before 5、用 wear 代替 put on 6、用be+代替终止性动词用“ be+形容词”屮终止性动词1 ' be + married 代 marry2、be + ill 代 fall (get) ill3 ' be + dead 代 die4 be + asleep 代 fall (get) asleep5 be + a

9、wake 代 wake/wake up6 be + gone 代 lose,die,sell,leave7 be + open 代 open8 be closed 代 close/shut9 be + missing(goneJost)代 lose用“be+副词”代终止性动词1 “ be+ on” 代 start,beg in2 “ be 4-up 代 get up3 "be+ back(to) 代 return to,come back to,go back to4 "be here (there)M 代 ome(arrive,reach,get) here 或 go (

10、arrive,reach,get) there 等等用“ 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 army举例：常用瞬间动词变延续T生动词1 have arrived at/in sw. got to/reached sw. come/go ne/moved to sw.2. have come/g one back/retur ned have bee n back3. have com e/gone out have been out4. have become hav

11、e been5. have got up have been up ；6. have fallen asleep/got to sleephave been asleep ；7. have finished/ended/completed have been over ；8. have begu n have bee n on9. have borrowed/bough t have kept/had10. have/has gone to have bee n in现在完成时练习(一)have bee n inot swA）选用have, has填空：1 told him the news.

12、2.She come back from school.B）按要求改写下列各句：4. They have bought a computer.（改成否定句）5. He has lost his book.（先改成一般疑问句,再作肯定与否定回答）C）单项选择6. -Where have you 5 Kate?to the bank.A. gone, gone B. been, been C. gone, been D. been, gone7. Her grandfather for two years.A. died B. has died C. has been dead D. has be

13、en died8. IVs six weeksI met you last.A. when B. since C. before D. for9. Tom and Jack have arrived at West Hill Farm already.A. have got B. have gone to C. have been to D. have reached现在完成时练习（二）一、单项选择。1 - Both his parents look sad . Maybe they whaVs happened to himA. knew B . have known C . must kn

14、ow D .will know2 He has been to Shanghai, has he ?A. already B.never C.ever D. still3、Have you met Mr Li ?A. just B. ago C .before D. a moment ago4、The famous writerone new book in the past two years .A. is writing B.was writing C.wrote D.has written5 Our countrya lot so far.Yes I hope it will be ev

15、en .A. has changed ; well B. changed ; goodC . has changed ; better D . changed ; better6 Zhao Lan alreadyin this school for two years .A. was ; studying B. will ; studyC has ; studied D . are ; studying7 We Xiao Li since she was a little girl.A. know B. had known C. have known D. knew8、 Harry Potte

16、r is a very nice filmit twice .A. will see B. have seen C. saw D.see9、 These farmers have been to the United States .Really ? Whenthere ?A. will they go B . did they goC . do they go D. have they gone10 youyour homework yet ?Yes . I it a moment ago .A. Did ; do ; finished B. Have ; done ; finishedC

17、. Have ; done ; have finished D . will ; do ; finish11 ' His fatherthe Party since 1978 .A. joined B. has joined C. was in D. has been in12 Do you know him well ? Sure Wefriends since ten years ago .A. were B. have been C. have become D. have made13 How long have you _ here ?About two months .A.

18、 been B. gone C. come D. arrived14 Hurry up! The playfor ten minutes .A. has begun B. had begunC . has been on D . began15 It ten years since he left the army .A. is B. has C. will D. Was二、句型转换。1 ' He has never surfed, ?（反意疑问句）2、They have been here since 2000.（对划线 部分提问） have they bee n here?3 Th

19、e old manlast year.Hefor a year, （die）（动i司填空）4 This factory opened twenty years ago.（同义句转换）This factory for twenty years.5、Miss Gao left an hour ago.（同义句转换）Miss Gaoan hour ago.6 Her mother has been a Party member for three years .（同义句）Her motherthe Party three years .7 The Green Family moved to Fran

20、ce two years ago.（ 同义句转换）two years the Green family moved to France.8 The bus has arrived here. It arrived ten minutes ago.（把 两个句子合并成一个句子）三、汉译英。1、吉姆已做完作业他现在有空了。Jim has finished doing his homework already. He is free now.2、他昨天收到一封信。He received a letter yesterday.3、我父亲以前到过长城。My father has been to the

21、Great Wall before.4、她还没有看过那部新 电影。She hasn't seen the new film yet.5 她去过上海 0 She has been to Shanghai.6、他这些天上哪儿去了 ？ Where has he been these days ?參芳合茶一、单项选择。1、现在完成时主要强调过去发生的动作对现在造成的影响，或过去发生的动作还未结束，一直持续到现在或将来，重 点在于对现在的影响。这种考查难度较大，往往无时间状语，需要从上下文分析、推理才行。故上两侧根据上下文分析、推理，正确答案是E。2、现在完成时常与already （已经），ju

22、st （刚刚，正好），ever （曾经），never （从来，也不；从不），before （以前），yet （仍然）等连用。故2应选B。3、C4 '现在完成时常与recently （近来），so far （到目前为止）» in the past/ "last+段时间”等寸间状语连用。因为 上述短语表示的是从现在起往前推算的一段时间，句中的动作是从过去某一时间或时刻开始持续到现在的。故4应选 D。5、C6、现在完成时时常与“for 时间段或since +过去时间点“连用（含从句，从句过去时）。故6应选C。7、C&现在完成时还与once （次）» twice （两次）» three times （三次）» several times （几次）等表示重复次 数的词 语连用。故8应选B。9、现在完成时与一般过去时容易混淆，就是因为它们所表示的动作都发生在过去，但二者又有区别：一般过去时表 示过去某个时间发生的事、存在的状态或经常发生的动作，说话的侧重点在于陈述一件过去的事情，与现在没有矢 系；