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现在完成时 ( have / has + v-ed ) 1. 表示刚刚结束的动作 , 常和 already, just, yet, now, not yet 等连用 . 例如 :

现在完成时 ( have / has + v-ed ) 1. 表示刚刚结束的动作 , 常和 already, just, yet, now, not yet 等连用 . 例如 : (1) Tom has just turned off the light. (2) I have already finished my homework. (3) They have n’t heard from Sam yet. 现在完成时 ( have / has + v-ed ) 2. 表示过去发生的动作对目前所造成的影响 . 例如 :

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现在完成时 ( have / has + v-ed ) 1. 表示刚刚结束的动作 , 常和 already, just, yet, now, not yet 等连用 . 例如 :

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  1. 现在完成时 ( have / has + v-ed ) 1.表示刚刚结束的动作, 常和 already, just, yet, now, not yet 等连用. 例如: (1) Tom has just turned off the light. (2) I have already finished my homework. (3) They haven’t heard from Sam yet.

  2. 现在完成时 ( have / has + v-ed ) 2.表示过去发生的动作对目前所造成的影响. 例如: (1) I have seen the film. I don’t want to see it again. (2) She has lost her ticket. She can’t go to the concert this evening.

  3. 现在完成时 ( have / has + v-ed ) 3.表示经验经历, 常和 ever, never, often, always, once, twice, three times, before 等连用. 例如: (1) Have you ever visited the USA? (2) I have never been to a swimming pool. (3) He has flown to Los Angeles before. (4) She has always wanted to meet Enya.

  4. 现在完成时 ( have / has + v-ed ) • 4.表示从过去持续到现在的动作或状态, 常和 since + 过去时, for + 时间段, recently, lately, these days, this week, in the past few days, during the last two weeks, so far, up to now, until now 等连用. 例如: • They’ve known each other since 1995. • (2) Tony has studied Chinese for a year.

  5. 现在完成时 ( have / has + v-ed ) • 5. 区别: have / has been to 表示去过某地, 已经回来; have / has gone to 表示去了某地,还未回来. 例如: • Betty has been to China. She knows a lot about Chinese culture. • --- Where’s Mr Yu? --- He has gone to Beijing. He will be back in a week.

  6. 现在完成时 ( have / has + v-ed ) 6. 注意: 当现在完成时跟表示持续的时间状语连用时, 不能使用终止性动词. (1) Tom has come for two hours. (×) (2) Tom has been here for two hours. (√) 下面我们来看看，如何把终止性动词转换成延续性动词.

  7. become  be buy  have borrow  keep catch a cold  have a cold get to know  know put on  wear leave  be away die  be dead arrive in/at  be in/at come to  be in/at join  be a member of /be in start  be on finish be over 终止性动词转换成延续性动词

  8. 终止性动词转换成延续性动词 Ibecamea teacherin 2001. I becamea teacher7 years ago. I have beena teachersince 2001. I have beena teacherfor 7 years.

  9. 终止性动词转换成延续性动词 Heboughta computerlast week. He has hada computersince last week. He has hada computerfor a week.

  10. 终止性动词转换成延续性动词 Sheborroweda bookin July. She borroweda booktwo months ago. She has keptthe booksince July. She has keptthe bookfor two months.

  11. 终止性动词转换成延续性动词 Tomcaughta coldyesterday. Tom has hada coldsince yesterday. Tom has hada coldfor a day.

  12. 终止性动词转换成延续性动词 Theyleftthe space stationlast Monday. They have been away fromthe space stationsince last Monday. They have been away fromthe space stationfor two days.

  13. 终止性动词转换成延续性动词 His grandfatherdiedin 2004. His grandfatherdiedfour years ago. His grandfather has been deadsince 2004. His grandfatherhas been deadfor four years.

  14. 终止性动词转换成延续性动词 The orchestraarrived inDalianlast week. The orchestraarrived inDaliana week ago. The orchestra has been inDaliansince last week. The orchestra has been inDalianfor a week.

  15. 终止性动词转换成延续性动词 His parentscame toChinalast month. His parentshave been inChinasince last month. His parentshave been inChinafor a month.

  16. 终止性动词转换成延续性动词 Charlie joinedthe armyin 2006. Charlie has been inthe armysince 2006. Charlie has been asoldierfor two years. Charlie joinedthe Leaguein 2006. Charlie has been inthe Leaguesince 2006. Charlie has been a member ofthe Leaguefor two years.

  17. 终止性动词转换成延续性动词 The filmstartedat 7 o’clock. The film has been onsince 7 o’clock. The film has been onfor half an hour.

  18. 终止性动词转换成延续性动词 The football mathfinishedat 5. The football math has been oversince 5 o’clock. The football math has been overfor 20 minutes.

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