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他已得到她的帮助。 ②He has just seen the film. 他刚刚看过这场电影。 ③He hasn't come back yet. 他还没有回来。 * 以ever和never为标志 ①This is the best film I have ever seen. 这是我曾经看过的最好的一部电影。 ②He has never been to Beijing. 他从没有到过北京。 * 以动作发生的次数为标志 He says he has been 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+before ①He has got to Beijing so far. 到目前为止他已到了北京。 ②She has passed the exam so far. 到目前为止她已经通过了考试。 2.过去已经开始的动作一直延续到现在, 甚至有可能继续延续下去,我们可以从动作“延续”的特性和“时间”点段的区分入手,进一步学习现在完成时。* ①for+时段 ②since+过去一个时间点(过去 从句)为标志 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 ago等; 2)不能与when连用 3)现在完成时往往同表示不确定的过去时间状语连用 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。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 2 、不规则动词: AAA型原型 过去式 过去分词 burst burst burst hurt hurt hurt let let let cast cast cast cost cost cost cut cut cut hit hit hit put put put set set set shut shut shut spread spread spread read read read read原形发音为/ri:d/,过去式和过去分词发音为/red/ AAB型beat beat beaten ABA型 become became become run ran run come came come 特殊情况 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 found hear heard heard hold held held keep kept kept lay laid laid lead led led lose lost lost make made made meet met met sell sold sold shoot shot shot sit sat sat stand stood stood sweep swept swept 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 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 七. 瞬间动词(buy, die, join, come,go ,leave, join ……)不能直接与for since 连用。要改变动词buy----have borrow -----keep come/arrive/reach/get to-----be in go out----be out leave ----be away begin-----be on finish----be over open----be open close -----be closed die----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 on b)用“be+形容词”代终止性动词1、be+married代marry 2、be+ill代fall (get) ill 3、be+dead代die 4、be+asleep代fall (get) asleep 5、be+awake代wake/wake up 6、be+gone代lose,die,sell,leave 7、be+open代open 8、be closed代close/shut 9、be+missing(gone,lost)代lose c)用“be+副词”代终止性动词1.“be+on”代start, begin 2.“be+up”代get up 3.“be+back(to)”代return to, come back to, go back to 4.“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 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 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 → have been over; 11. have married → 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 → haven’t 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. have/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 Party’s member/the league member/the soldier… 现 在 完 成 时 专 项 练 习完成下列的句子: 1.你已经找到你的书了吗? (find-found) 2. 他们在这个城市建了许多房子. (build-built) 3. Judy还没到达. (arrive-arrived) 4. 你吃过早饭了吗? (have-had) 5. 她刚刚离开. (leave-left) 用法一:表过去发生的某一动作对现在造成的影响或结果,(强调结果现在还存在)例如: I have just cleaned my clothes. 我刚洗过衣服。 (“洗衣服”是发生在过去的动作,对现在造成的结果是“衣服干净了”) I have just had my breakfast. (对现在的影响:不饿) Has he had his breakfast? Yes, he has. When did he have his breakfast? He had breakfast at 6:00. 通常与表示包括现在在内的时间副词 just (谓语动词之前) (刚刚), already(已经(肯定句) ), before, yet(一般疑问句末:已经;否定句:还) never, ever (疑问句) twice recently(近来)等状语连用Tom has already finished his homework. Tom hasn’t finished his homework yet. 2.I have just had my lunch. 3.She hasn’t seen you before. 4.Have you ever eaten fish? I have never eaten fish ① I have never heard of that before. ② Have you ever ridden a horse? ③ She has already finished the work. ④ Have you milked the cow yet? Yes, I have done that already. ⑤ I’ve just finished my homework. ⑥ He has not come yet. 常用于现在完成时的时间副词,介词:①already (已经): 用于肯定句 I have already posted the letter . ②yet(已经): 用于否定句,疑问句 He hasn’t done his homework yet. ③just(刚刚) They have just left. ④ever(曾经) Have you ever been to Beijing ? ⑤never(从不) I have never seen him . ⑥before(以前) Have you seen the film before? ⑦since(自从…以来) I’ve worked in the school since 1999. ⑧for(长达) He’s lived in Shenzhen for 6 years. ⑨in the past several days / weeks/ years(在过去的…) ⑨recently(最近) I have not written to my parents recently. ⑩so far(到目前为止) So far she has learned 5 English songs. ⑩up to now(到目前为止) this morning/month/year(今天早上/这个月/今年) 练习:把下列各句译成英语。 1.你已经问过这个问题两边了,别再烦我了。 2我能借你的字典用一下吗?对不起,已经借给Tom了。 3 你以前见过她吗?不,从来没有过。 4 你曾经去过北京吗?是的我去过那儿三次。 5 你已经看完那本小说了吗?是的,我已经把它还给图书馆了。 用法二:表示过去已经开始,持续到现在的动作或状态,也可以表示一直持续到现在并可能还将持续下去。A. 动词使用延续性动词。 B .和表时间段的时间状语连用。 常与for或since引导的时间连用so far, up to/till now, in the last/past+一段时间,all one’s life, by now, these days, these days、for two years、since 1984、since he came here I haven’t seen her these days. She has learnt English for 3 years/since 3 years ago. They have lived here since 1990. What has happened to the USA in the last 350 years? since: (自…以来)1)since+时间点 He has stayed here since 5 o’clock. 2)since+ 时间段+ ago He has stayed here since 5 hours ago. 3)since+从句She has taught English since he came here. for for+ 时间段 He has kept the book for 2 weeks. 用for ,since填空Mr. Brown has had his TV ________ 15 years. 2.Ive taken driving lessons _________ last month. 3. My sister has had her cell phone ________ a month . 4. My friends havent visited me ___________ my birthday. 5.We havent used our car ________ a long time . 6.She hasnt had a good cup of coffee _________ years. Tom has worn glasses _________ he was 7 years old. 注 意:(1)since+一段时间+ago=for+时间段; since two weeks ago=for two weeks; I have kept the library book for a week.= I have kept the library book since a week ago. (2)since + 时间点=for+时间段 since 2000=for 15 years (3) since+从句(常用一般过去时) The Greens have lived in Beijing since they moved to Beijing from Paris (4)It is /has been +一段时间 + since 从句.自从某事发生已有一段时间了. It is /has been two years since my brother joined the army. 填空:1. Jill has been in Ireland________Monday. 2. Jill has been in Ireland__________three days. 3. My aunt has lived in Australia_______15 days. 4. Margaret is in her office. She has been there_____7 o'clock. 5. India has been an independent country________1974. 6. The bus is late. We've been waiting________20 minutes. 7. Nobody lives in those houses. They have been empty many years. 8. Mike has been ill________a long time. He has been in hospital ________October 9. Its ten years ______ we met each other last time. 10. He has taught English _______ 25 years. 11. The Greens have lived on the farm ______ 1990. 12. They have been practicing the guitar _____ two hours. 13.-How long have you been a reporter? -_____ 8 years ago. 14. I haven’t gone for a walk in the park _____ a long time. 15. He’s been collecting stamps ____ he was in primary school. 16. Peter has been to summer camp _____ 3 times. 三、非延续性动词与现在完成时: 短暂性动词在肯定句、疑问句中不能与时间段连用,这些动词是:become, begin, buy, borrow, arrive, come, die, fall, finish, get to know, go, join, leave, marry等。为了表述这种意思,我们常用相应的延续性动词have,keep等来代替非延续性动词。1.他入党五年了。 ——He joined the Party five years ago . ——He has been in the Party for five years. ——He has been a Party member for five years. ——it is five years since he joined the Party 2.电影开始五分钟了。 —— The film began five minutes ago. ——The film has been on for five minutes. ——It is five minutes since the film began 常见非延续性动词和延续性动词的转变: 第一类:动词 be + adj./advdie --- be dead, finish/end --- be over , return--- be back, come--- be here, go--- be off, marry (sb/get married to sb)— be married (to sb) open/close--- be open/be closed, fall ill/ fallasleep/get to sleep--- be ill/ be asleep , 第二类:动词 be + 介词.start/begin--- be on leave--- be away from join--- be in/be a memember of 第三类:动词 另一个动词buy---have borrow--- keep/have get/begin to延续性v. become--- in put on--- wear catch/get a cold --- have a cold, get to know---- know 同义句转换: 1.His father died 2 years ago. 2.The football match began at 9:00a.m. 3.The twins joined the army when they were 18 years old. 4.My teacher left Nanjing 3 days ago. 汉译英: 他的爷爷已经去世2年了。 Nick 参军3年了. 3.他离开深圳好长时间了。 4.这本书我已借了4个月了. It is + 时间段 since +一般过去时的句子.It is 2 years since his grandpa died. 模仿写出以上剩下的三个句子: 完成下列的句子: 1.The English professor arrived here about a week ago. The English professor ____ _____ here for about a week . 2.Her husband started to work on the farm three hours ago . Her husband _____ _____ on the farm for three hours . 3.The French musician came to China last month , and he is still here . The French musician _____ _____ ____ China for a month . 4.He joined the army in 1985 . He _____ _____ ____ the army ____ 1985 . 5.He joined the League half a year ago . He has been a League ______ ______ half a year .返回搜狐,查看更多 |
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