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1、The present perfect tense,现在完成时,1,教学运用,1.过去某一时间点发生的动作对现在产生影响。,功能：,2,教学运用,2.过去某一时间点发生的动作持续 到现在或还将持续下去。,3,教学运用,The present perfect tense,助动词 （可以帮助构成肯定、疑问和否定句）,4,教学运用,1.He has cleaned his room. (写一个一般疑问句）,Has he cleaned his room?,2. She has lived in London for four years. (划线部分提问）,How long has she live
2、d in London?,5,教学运用,3. He has been to China, _ _? （写出反义疑问句部分）,hasnt he,4. They have come back from work. (写否定句）,They havent come back from work.,6,教学运用,What are the key words for the Present Perfect Tense?,7,教学运用,A: _ your brother _ his homework yet? (finish) B: Yes, he s already done it.,Key words,
3、Has finished,yet,already,注意：already 用于肯定句， yet 用于疑问句和否定句中,8,教学运用,A: _ you ever _ to the park? ( be ) B: No, never.,Key words,Have been,yet,already,ever,never,注意： ever 曾经 用于疑问句中 never 从不 带有否定意义,9,教学运用,I _ just _ the desk, you can take it to your classroom . (mend ),Key words,have mended,yet,ever,neve
4、r,just,already,Just 刚刚 与现在完成时连用 一般置句中 Just now 刚才 与一般过去时连用,10,教学运用,Tom _ in the factory since he left school ten years ago. (work ),Key words,has worked,yet,ever,never,since,already,since 后面带过去时间或有一般过去时的句子,11,教学运用,A: How long _ you _ in this school? (teach ) B: For 6 years.,Key words,have taught,yet
5、,ever,never,since,for,already,+ 一段时间,12,教学运用,We _ only _ 100 trees so far. (answer ),Key words,have planted,yet,ever,never,since,for,just,already,so far,到目前为止,13,教学运用,Key words,yet,ever,never,since,for,just,before,already,so far,in the past 10 years,twice,也可以是其他表示次数的词,how long,14,教学运用,Some verbs can
6、t often be used with for or since,15,教学运用,Please point out any mistakes and correct,She has bought the computer for two years.,had,16,教学运用,Please point out any mistakes and correct,How long have you come to the United States？,been in,17,教学运用,Please point out any mistakes and correct,Ann has gone to
7、China since three months ago.,been in,18,教学运用,Please point out any mistakes and correct,My brother has joined the army for five years.,been in,been a soldier,19,教学运用,Please point out any mistakes and correct,I have left Shanghai for 3 days.,been away for 3 days.,20,教学运用,Please point out any mistakes
8、 and correct,I have borrowed the dictionary since 3 days ago .,kept,21,教学运用,Please point out any mistakes and correct,The film has begun for 10 minutes.,been on,22,教学运用,Please point out any mistakes and correct,The concert has finished for half an hour.,been over,23,教学运用,Please point out any mistake
9、s and correct,His dog has died for two years .,been dead,24,教学运用,can you distinguish?,去过某地已经回来 常与ever, never, once,twice,连用,一直留在某地 与for / since连用 用how long 提问,去了某地 还没回来不与 只用于第三人称,Her sister _ Australia, She left this morning.,has gone to,25,教学运用,can you distinguish?,去过 常与ever, never, once,twice,连用,在
10、 与时间段连用 用how long 提问,去了 说话时某人不在 只用于第三人称,A: Where is Bob ? B: He _ Japan with his sister.,has gone to,26,教学运用,can you distinguish?,去过 常与ever, never, once,twice,连用,在 与时间段连用 用how long 提问,去了 说话时某人不在 只用于第三人称,A: How long _ you _ China? B: I _ here for 3 years.,have been,have been in,27,教学运用,can you distin
11、guish?,去过 常与ever, never, once,twice,连用,在 与时间段连用 用how long 提问,去了 说话时某人不在 只用于第三人称,A: _ you ever _ the city ? B: No , never .,Have been to,28,教学运用,The past tense or the present perfect tense,know,have known,knew,29,教学运用,The past tense or the present perfect tense,saw,have,lost,30,教学运用,The past tense or
12、 the present perfect tense,have,did,move,lived,31,教学运用,The past tense or the present perfect tense,did,has finished,see,saw,32,教学运用,EXERCISE,He _(work) in our school for one year. He _(come) to our school last year/in 2002. They _(cook) the supper already. They _ (cook) the supper half an hour ago.,
13、has worked,came,have cooked,cooked,33,教学运用,2. The famous writer _ one new book in the past two year . . is writing .was writing .wrote .has written,3.Our country _ a lot so far . Yes . I hope it will be even _ . . has changed ; well . changed ; good . has changed ; better . changed ; better,4.Harry
14、Potter is a very nice film .I_ it twice . . will see . have seen . saw .see,1. Have you met Mr Li _？ . just B. ago .before . a moment ago,C,34,教学运用,5. These farmers have been to the United States . Really ? When _ there ? . will they go . did they go . do they go . have they gone,6. _ you _ your homework yet ? Yes . I _ it a moment ago . . Did ; do ; finished B. Have ; done ; finished . Have ; done ; have finished . will ; do ; finish,B,B,35,教学运用,