动词现在完成时课件- 高三英语一轮复习.ppt
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1、Present Perfect,现在完成时,1.现在完成时的构成: have/has +过去分词 规则的动词的过去分词与过去式同形,不规则动词的过去分词要查看不规则动词的过去分词表,并强记。2. 现在完成时的否定式和疑问式:3. 现在完成时的用法:1) 表示过去发生或完成的动作对现在情况有影响或与现在情况有联系,一般用于延续性动词和非延续性动词。如:,Hes turned off the light. 他关上了灯。(灯在过去某时被关了, 说话时它仍然是关着的) Ive studied Russian. 我已学了一些俄语。(现在懂一些俄语) Hes had a good education. 他
2、受过了良好的教育。(他现在的文化水平较高),常与表示不确定的过去时间的状语连用,如:already, yet, just, before, recently, lately, etc. Shes already/just gone. Have you got the plan ready yet? No, not yet. Its rained quite recently. I think Ive met him before.,2) 表示到现在为止的时间里已经发生或反复发生或没有发生。常与下列时间状语连用。 表频度的时间状语连用, 如:often, sometimes, always, r
3、arely, seldom, ever, never, once, twice, three times, etc. Ive often gone to the park.,Hes sometimes/seldom had letters from his uncle. Have you ever met him before. No, never. Its (just) snowed here twice. 表示包括现在说话时间在内的时间状语, 如: now, today, this morning, this month, this year, etc.,Theyve finished t
4、he job now. Weve had too much rain this year. Ive seen the doctor this month. Have you seen her today?,3) 表示某个动作或状态从过去某时开始, 一直延续到现在,并有可能继续延续下去。常与下列时间状语连用: since, for a long time, so far, until /up to now, these days/years, all day, all this while, in/for/over the past/last years/days, His grandfathe
5、r has been dead for ten years.,=It is (has been) ten years since his grandfather died. The bank has been closed for two weeks. =It is (has been) two weeks since the bank (was) closed. They have been away on holiday for a month.,=It is (has been) a month since they left on holiday.His brother has bee
6、n in the army for several years.It is (has been) several years since his brother joined the army.He has been here for hours.=It is (has been) hours since he came here.,She has been ill for a week.=It is (has been) a week since she fell ill.I have never heard of him since he left.We havent seen each
7、other since then/for a long time.Where have you been all these years?Up to now, we have received no news from her.That has been my life for these past ten years.,4) 表示先于一个现在时的动作。I understand what he (has) said to us.5) 在if, unless, when, as soon as, until 等引导的条件和时间状语从句中代替将来完成时。When/If you have finis
8、hed the experiment, please turn off the lights.,I shall go as soon as I have finished my lessons.4. 现在完成时和一般过去时的区别:1) 现在完成时不可与确定的过去时间状语连用,如: yesterday, last night, just now, in 1980, ten years ago, etc. 这些时间状语用于一般过去时。,I first met him ten years ago.2)现在完成时与现在情况有联系, 而一般过去时与现在情况无关。 Hes turned off the l
9、ight. 他关上了灯。 (现在的灯还关着) He turned off the light. 他当时关上灯。 (现在的灯的状态不知如何,也许是开,也许是关),He has lived in China for ten years. 他在中国已住了十年。(现在刚刚搬走或继续住下去) He lived in China for ten years. 他曾经在中国住了十年。(现在住哪里不知道,或许早已不住在中国或重新住在中国),He has gone to Beijing. 他已去北京了。(人在途中或到了北京) He has been to Beijing. 他去过北京。(人已回来) He has
10、 been in Beijing (for a week). 他已到北京或一直在北京。 He went to Beijing. 他当时去北京了。 (人已回或未回),3) 下列时间状语用于现在完成时或一般过去时意义区别不大。如:never, ever,just,already, yet, before, today, this month/week/year, etc. Have you ever heard the story about Miss Evans? =Did you ever hear the story about Miss Evans?,Ive never met such
11、a careless man. =I never met such a careless man. Ive just come back. =I just came back. Have you eaten yet? =Did you eat yet? Ive already seen it. =I saw it already.,Have you taken your medicine today? Did you take your medicine today?4) 下列时间状语用于现在完成时或一般过去时意义有差别。如:this morning/afternoon, this March
12、, this summer, once, etc. Weve had four classes this morning. (说话时间还在上午) We had four classes this morning. (说话时间在下午或晚上),Ive seen him this March. (说话时间还在三月) I saw her this March. (说话时三月已过) We havent had much rain this summer. (说话时间还在夏天) We didnt have much rain this summer. (说话时夏天已过),I have been there
13、 once. (一次) I once lived in Beijing. (曾经),1. Fill in each blank with the verb in its proper form. My grandfather is 96 years old, and he _ (live) a long and interesting life. He _ (travel) a lot, especially in the Far East. He _ (see) the Taj Mahal in India, and the Pyramids in Egypt. He _ (hunt) li
14、ons in Africa, and _ (ride) a camel,across the Sahara Desert. He says that the most beautiful place he _ (be) to is Kathmandu in Nepal. He _ (meet) the Queen on several occasions. In 1959 he was a soldier in New Zealand when she _(come) to visit, and in 1972 he _ (go) to a garden party at Buckingham
15、 Palace. He _ (marry) twice.,His first wife died when she was 32. He met his second wife while he _ _(travel) round France by bike. He and his wife, Eleanor, _ (be) married for 50 years, and they _ (live) in the same cottage in the country since they got married. He says that he _ never _ (be) ill i
16、n his life. The secret of good health,according to my grandfather, is exercise. He _ (do) this since he was a boy. He also has a glass of whisky every night! Perhaps that is his secret!,1. Fill in each blank with the verb in its proper form. My grandfather is 96 years old, and he _ (live) a long and
17、 interesting life. He _ (travel) a lot, especially in the Far East. He _ (see) the Taj Mahal in India, and the Pyramids in Egypt. He _ (hunt) lions in Africa, and _ (ride) a camel,has lived,has travelled,saw,hunted,rode,across the Sahara Desert. He says that the most beautiful place he _ (travel) to
18、 is Kathmandu in Nepal. He _ (meet) the Queen on several occasions. In 1959 he was a soldier in New Zealand when she _ (come) to visit, and in 1972 he _ (go) to a garden party at Buckingham Palace. He _ (marry) twice.,has travelled,met,has married,came,went,His first wife died when she was 32. He me
19、t his second wife while he _ _(travel) round France by bike. He and his wife, Eleanor, _ (be) married for 50 years, and they _ (live) in the same cottage in the country since they got married. He says that he _ never _ (be) ill in his life. The secret of good health,was,travelling,have been,have liv
20、ed,has,been,according to my grandfather, is exercise. He _ (do) this since he was a boy. He also has a glass of whisky every night! Perhaps that is his secret!,has done,2. Fill in each blank with the verb in its proper form. I _ just _ (receive) a letter from my brother, Tim. He _ (be) in Australia.
21、 He _ _(be) there for six months. Tim _ (be) an engineer. He _ (work) for a big firm and he _ already _(visit) a great number of different places in,Australia. He _ just _ (buy) an Australian car and _ (go) to Alice Springs, a small town in the centre of Australia. He _ soon _(visit) Darwin. From th
22、ere, he _(fly) to Perth. My brother _ never _ (be) abroad before, so he _ (find) this trip very exciting.,2. Fill in each blank with the verb in its proper form. I _ just _ (receive) a letter from my brother, Tim. He _ (be) in Australia. He _ _(be) there for six months. Tim _ (be) an engineer. He _
23、(work) for a big firm and he _ already _(visit) a great number of different places in,have received,is,has,been,is,is working,has,visited,Australia. He _ just _ (buy) an Australian car and _ (go) to Alice Springs, a small town in the centre of Australia. He _ soon _(visit) Darwin. From there, he _(f
24、ly) to Perth. My brother _ never _ (be) abroad before, so he _ (find) this trip very exciting.,has bought,has gone,will,visit,will fly,has been,is finding,3. Fill in each blank with the verb in its proper form. Dennis Heal _ (be) a politician. He _ (go) to Oxford University in 1975, and in 1982 he _
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