现在完成时讲解通用课件

1、上一页下一页主菜单现在完成时现在完成时 主菜单上一页下一页现在完成时的构成现在完成时的构成现在完成时的主要用法现在完成时的主要用法现在完成时的时间状语及动词过去分词现在完成时的时间状语及动词过去分词短暂性动词与时间段的关系短暂性动词与时间段的关系have been 与与have gone 比较比较与一般过去时的用法比较与一般过去时的用法比较Mother: John, clean your teeth please.John: Mum, I them. 现在完成时的构成现在完成时的构成主菜单上一页下一页主语主语+have (hashave (has）+ + 过去过去分词分词例句例句： I hav

2、e already had lunch. Have you had lunch yet? Yes, I have. No, I havent. I havent had lunch yet. He has gone to the library ? 他是去了图书馆。 现在完成时的基本句型：现在完成时的基本句型：肯定式：肯定式：主语 + 助动词have/has + 动词的过去分词. 疑问式：疑问式：助动词Have/Has + 主语 + 动词的过去分词?否定式否定式: 主语 + 助动词have/has + not + 动词的过去分词. 现在完成时的主要用法现在完成时的主要用法上一页下一页- It

3、s so dark.-Someone has turned off the light.(有人刚把灯关了有人刚把灯关了,对现在造成的结果是对现在造成的结果是:现在很黑现在很黑)- Are you free?-I have finished my homework. I am free.( (我已我已经经完成了家庭作完成了家庭作业业,对现在造成的结果是很有空对现在造成的结果是很有空)主菜单用法用法1. 表示发生在过去的动作对现在造成的结果或影响。 (与一般过去时对比，一般过去时强调的是发生在过去的动作而现在完成时强调的是现在的结果或影响。) 用法用法2. 动作发生在过去，并且一直延续到现在，甚至

4、还可能继续延续下去。I have lived here for 3years.He has taught English since 2001.3.3.表示人曾有过或到目前为止从表示人曾有过或到目前为止从未有过的未有过的经历经历. .上一页下一页I haveI have ever ever beenbeen to the Summer Palace? to the Summer Palace?(我曾去过颐和园我曾去过颐和园) I I havehave never never had had a car.a car. (我从未有过汽车。我从未有过汽车。)主菜单现在完成时的现在完成时的时间状语时间

5、状语常与常与already, already, never, never, ever, ever, just, just, yet, yet, before, before, up to now, up to now, so far, so far, for the last few weeksfor the last few weeks these days, these days, since since for a long timefor a long time 连用连用上一页下一页主菜单12动词过去分词的变化规则动词过去分词的变化规则规则变化： 一般情况下，动词词尾加 -ed ，如：

6、 worked played wanted acted 以不发音的 -e 结尾动词，动词词尾加 -d，如： lived moved decided hoped 以辅音字母 + y结尾的动词，把-y变为-i 再加-ed，如： studied tried copied cried 以一个辅音字母结尾的重读闭音节动词，双写词尾辅音字母，再加 -ed，如： stopped begged dropped planned 13不规则变化AB型 can -could shall-should will-wouldAAA型 cost-cost-cost cut-cut-cut hit-hit-hit hurt

7、-hurt-hurt let-let-let put-put-put set-set-set shut-shut-shut read-read-read AAB型 beat-beat-beaten ABA型 become-became-become come-came-come run-ran-run 现在完成时标志词1在表示“用法1”时，现在完成时常和副词already, yet, never, ever ,before ,just等连用。.a）already 往往用于肯定句，用在疑问句时表示强往往用于肯定句，用在疑问句时表示强 调或加强语气；调或加强语气；yet 用于否定句和疑问句。用于否

8、定句和疑问句。 He has already left here. 他已经离开这里了。 Has he already left here? 他（真的）已经离开这里了吗？（表示加强语气） My teachers havent had breakfast yet. 我的老师们还没有吃早饭。 Have you written to your parents yet? 你已经给你父母写过信了吗？2. yet在现在完成时中的用法在现在完成时中的用法 否定句否定句:句末句末 “还还(没没)”疑问句疑问句: 句末句末 “己经己经” Eg. I havent had breakfast yet. Have y

9、ou had breakfast yet?b） never 是否定词，表示是否定词，表示“从来没有从来没有”，而，而ever 表示表示“曾经曾经” We have never been to the Great Wall. 我们从来没有去过长城。 Have you ever been to Canada? 你们曾经去过加拿大吗？ c） just表示表示“刚刚刚刚”（用于完成时态时，与（用于完成时态时，与already，never 等副词的位置一样，多用在助动词等副词的位置一样，多用在助动词have/has和动词过去分词之间）和动词过去分词之间） He has just come back. 他

10、刚刚回来。 They have just finished the work. 他们刚刚完成那项工作。现在完成时标志词1在表示“用法2”时，现在完成时常与与since + since + 过去的时间点，过去的时间点，for + for + 一段时间，一段时间，so far so far 等时间状语连用。等时间状语连用。1.for +Eg. I have been here for 5 weeks. Hes studied English for 3 years.一段时间一段时间2. since +从句(一般过去时) 单词 词组 (表示过去某一时间的)时间点时间点Eg. I have been

11、here since 2000. I have been here since 5 years ago. I have been here since I graduated in 2000.since: (自自以来以来)1)since+时间点时间点He has stayed here since 5 oclock.2)since+ 时间段时间段+ agoHe has stayed here since 5 hours ago.3)since+ 从句从句She has taught English since he came here. for: (长达）长达）for+ 时间段时间段He ha

12、s kept the book for 2 weeks.since , for 的用法的用法: Take notes 注1): since 也可单独使用, 表示“自那时起”; 另外since前也可加上ever,以加强语气.Eg. I have been here (ever) since. I have been here (ever) since I graduated in 2000.注2): 对for或since引导的时间状语提问 必须用how long, 决不能用when.Eg. I have lived here for 10 years.How long have you live

13、d here?She has stood here since 2 hour ago.How long has she stood here?短暂性动词与延续动词间的转换leave-come/go (to) -arrive (at/in)- get (to)-reach-buy-borrow-finish-join-start/begin-die-close-open-return-marry-become- be away (from) be (in/at) be (in/at) be (in/at)be (in/at)havekeepbe overbe in/be a/anbe onbe

14、deadbe closedbe openbe backbe married be短暂性短暂性动词与时间段的关系动词与时间段的关系 短暂性动词在肯定句、疑问句中短暂性动词在肯定句、疑问句中不能与时不能与时间段连用间段连用，这些动词是：，这些动词是：等。等。上一页下一页为了表述这种意思为了表述这种意思, ,我们常用相应的我们常用相应的来代替短暂性动词。来代替短暂性动词。主菜单 become become be be, begin , begin havehave , , borrow borrow keepkeep, buy , buy havehave, , come (go, arrive,

15、get) come (go, arrive, get) be here/there/inbe here/there/in， die die be be deaddead, finish , finish be overbe over, , join join be in be in （be a member of be a member of ） leaveleave be away ( from), be away ( from), 下一页上一页主菜单 但在否定句中，短暂性动词可但在否定句中，短暂性动词可以与时间段连用。以与时间段连用。如：如：I havenI havent bought t

16、he bike for a t bought the bike for a year. year. 我买这辆自行车还不到一年。我买这辆自行车还不到一年。She hasnShe hasnt come here for an hour. t come here for an hour. 她来这儿还没有一个小时。她来这儿还没有一个小时。上一页下一页主菜单 翻翻 译译 练练 习：习： 1. 1.我买了这块手表五年了。我买了这块手表五年了。 2. 2.这位老人已经死了十年了。这位老人已经死了十年了。 I I have boughthave bought this watch for five years

17、. this watch for five years. I I have hadhave had this watch this watch forfor five five years/years/sincesince 5 years 5 years ago.ago. The old man The old man has diedhas died for ten years. for ten years. The old man The old man has been deadhas been dead for ten for ten years/since 10 years/sinc

18、e 10 years ago.years ago.WW下一页上一页主菜单 3.3.他已经回来三天了。他已经回来三天了。 4. 4.自从六点钟他就来这儿了。自从六点钟他就来这儿了。 5. 5.我离开家乡已十年了。我离开家乡已十年了。 He He has come backhas come back for 3 days. for 3 days. He He has been backhas been back forfor 3 days/ 3 days/sincesince 3 3 days days agoago. . He He has come herehas come here sinc

19、e 6 oclock. since 6 oclock. He He has been herehas been here since 6 oclock. since 6 oclock. I I have lefthave left hometown for 10 years. hometown for 10 years. I I have been away fromhave been away from hometown for 10 hometown for 10 years. years.WWW下一页上一页主菜单have been 与have gone 的用法比较 have been t

20、o 意思是意思是“到过，去过到过，去过”，表示表示曾经到过某处曾经到过某处，但现在人不在那儿。，但现在人不在那儿。have gone to 意思是意思是“去了去了”，表示，表示已已经去了经去了某地，现在人可能在去的途中或某地，现在人可能在去的途中或已在那儿了。已在那儿了。have been in 意思是意思是“呆在某处一段时呆在某处一段时间了间了”上一页下一页主菜单 Has she ever been to Nanjing?Has she ever been to Nanjing?她曾去过南京吗？她曾去过南京吗？ You have never been there, have you?You

21、have never been there, have you?你以前从未去过那儿，是吗？你以前从未去过那儿，是吗？ I have been to Guiling ,I went there I have been to Guiling ,I went there last year. last year.我去过桂林，我去年去的。我去过桂林，我去年去的。 She has gone to Nanjing.She has gone to Nanjing. 她已经去南京了。她已经去南京了。上一页下一页主菜单 与一般过去时的用法比较一一. .现在完成时和一般过去时都是说过现在完成时和一般过去时都是说过

22、去的事情，去的事情，; ;而一而一般过去时，则只般过去时，则只讲述讲述发生在过去的发生在过去的动作和事情动作和事情与现在没有关系与现在没有关系。 上一页下一页主菜单四四)It is +一段时间一段时间 +since+句子句子(一般过去时一般过去时) =一段时间一段时间+has passed +since + 句子句子(一般过去时一般过去时) Eg. It is five years since I joined the army.=Five years has passed since I joined the army.eg：He has bought an English-Chinese

23、dictionary. 他已经买了一本英汉字典。他已经买了一本英汉字典。 He bought an English-Chinese dictionary. 他曾买过一本英汉字典。他曾买过一本英汉字典。上一页下一页第一句用现在完成时时态，想表达意为：第一句用现在完成时时态，想表达意为：“He He bought an English-Chinese dictionary. And bought an English-Chinese dictionary. And he still has ithe still has it” “过去他买了一本英汉字典，过去他买了一本英汉字典，现在他还有这本字典现

24、在他还有这本字典” 。第二句用过去时只叙述过去他买过一本英汉字第二句用过去时只叙述过去他买过一本英汉字典这一事实，至于现在他是否有这本字典并未强典这一事实，至于现在他是否有这本字典并未强 调说明。调说明。主菜单二当有一个表示二当有一个表示过去某一特定时间过去某一特定时间的状语时，不用现在完成时，而用的状语时，不用现在完成时，而用一般过去时一般过去时: : 上一页下一页eg: I saw the film on television yesterday . 但但since(since(自自以来以来)+)+某一过去时间或叙某一过去时间或叙述过去事情的从句总是与现在完成时述过去事情的从句总是与现在完

25、成时连用。连用。eg： They have known each other since 1950 . Since he was a child ,he has lived in England.主菜单三常与一般过去时连用的典型的三常与一般过去时连用的典型的 表示过去时间的状语表示过去时间的状语: :上一页下一页yesterday(yesterday(昨天昨天), the day before yesterday(), the day before yesterday(前天前天), ),just now(just now(刚才刚才) )， 时间时间+ ago, + ago, last +las

26、t +时间时间 等等; ; eg: The plane took off ten minutes ago. We finished our task last week .主菜单上一页主菜单动动 词词 填填 空：空： 1._ you _(clean) the room?1._ you _(clean) the room? Yes, we _(do) that Yes, we _(do) that alreadyalready. . When _ you _(do) it? When _ you _(do) it? We _(do) it We _(do) it an hour agoan ho

27、ur ago. .2._ he _(see) this film 2._ he _(see) this film yetyet? Yes.? Yes. When _ he _(see) it? When _ he _(see) it? He _ it He _ it last weeklast week. . 3. How many times _you_(be) there? 3. How many times _you_(be) there? HaveHavecleanedcleanedhave donehave donediddiddododiddidHasHasseenseendidd

28、idseeseesawsawhavehavebeenbeen下一页上一页主菜单4. I _ (read) the novel twice. It4. I _ (read) the novel twice. Its interesting.s interesting.5. She _(go) to Pairs, hasn5. She _(go) to Pairs, hasnt she? Yes.t she? Yes. How _ she _(go) there? How _ she _(go) there? She _(go) there by air. She _(go) there by a

29、ir.6. 6. So farSo far, many countries _(develop) , many countries _(develop) their software programs. their software programs.7.Mr Chen _(give)up smoking 7.Mr Chen _(give)up smoking last yearlast year. .8.Mr Chen _(give) up smoking 8.Mr Chen _(give) up smoking since last yearsince last year. .have r

30、eadhave readhas gonehas gonediddidgogowentwenthave developedhave developedgavegavehas givenhas given下一页上一页主菜单选用选用 forfor和和 sincesince填空填空: :1.We haven1.We havent seen each other _ a long time.t seen each other _ a long time.2.His father has been in the Party _ 10 years 2.His father has been in the P

31、arty _ 10 years ago.ago.3.The film has been on _ 20 minutes.3.The film has been on _ 20 minutes.4.Mr Green has worked here _ he came to 4.Mr Green has worked here _ he came to China.China.5.His grandparents have been dead _ several 5.His grandparents have been dead _ several years.years.6. It6. Its

32、five years _ we met last time.s five years _ we met last time.forforsincesinceforforsincesinceforforsincesince下一页上一页主菜单用用Have been to, have gone to, have been in 填空填空1.1.Mike and his parents _ the north Mike and his parents _ the north for half a year.for half a year.2.2.Mum is not at home now. she

33、_ the Mum is not at home now. she _ the shop.shop.3.3._ you ever _ to kunming ? Never._ you ever _ to kunming ? Never.4.4.Where _ you _ these days?Where _ you _ these days?5.5.Has Jim arrived yet?Has Jim arrived yet? Yes, he _ here for several days. Yes, he _ here for several days.6.6.Where is Peter

34、? I dont know where he Where is Peter? I dont know where he _._.7.7.Hi Jim! Where _ you _ ? Li Lei Hi Jim! Where _ you _ ? Li Lei is looking for you. is looking for you.have been inhas gone tohave beenHave beenhas been has gonehave been下一页上一页主菜单改改 错错1. How long have you begun to study English?2. I h

35、ave borrowed this book for two weeks.3. The river has become very dirty since last August.4. Our manager is away today. He has been to Guangzhou on business.5. He has gone out for two years.studiedkeptbeengonebeen下一页上一页主菜单1. The house is dirty. We _it for weeks. A didnt clean B hadnt cleaned C dont

36、clean D havent cleaned2. -_the sports meeting might be put off. -Yes, it all depends on the weather. A Ive been told B Ive told C Im told D I told3. - Im sorry to keep you waiting. -Oh, not at all. I _here only a few minutes. A have been B had been C was D will be 4. You dont need to describe her. I _ her several times. A. had met B have met C met D meet 5. -Will you go to