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1、The Present Perfect tense Present Perfect Tense 现在完成时现在完成时 pastpresent(now) future 现在完成时的结构现在完成时的结构 主语主语 + have/ has + 过去分词( 过去分词( 助动词助动词,无意义无意义 Winter hasalready come , will it still be far in spring ? pp ) 现在完成时的结构现在完成时的结构 主语主语 + have/ has + 过去分词( 过去分词(pp) 注:主语若是第三人称单数助动词用注:主语若是第三人称单数助动词用 has 否定形式
2、否定形式 havent ( have not ) ) +过去分词 过去分词 hasnt ( has not ) +过去分词 过去分词 疑问句疑问句把助动词把助动词 have / has 放在句首 放在句首 区别区别have 和和 has的用法 的用法 You have planted all the trees. I have planted all the trees. He/she has planted all the trees. They have planted all the trees. 主语若是第三人称单数助动词用主语若是第三人称单数助动词用 has 现在完成时的用法现在完成
3、时的用法 1) 表示到现在为止已经完成或刚刚完成的动作。 表示到现在为止已经完成或刚刚完成的动作。 Now we have planted all the trees. He has just comeback. They have built many buildings in this city. 2) 表示过去发生的动作 表示过去发生的动作,强调结果或对现在的影响。强调结果或对现在的影响。 Someone has broken the window. ( 窗户现在是坏的窗户现在是坏的) I have already lost the key. ( 我现在没有钥匙我现在没有钥匙) I ha
4、vent read that book yet . (不了解书的内容 不了解书的内容) I have just cleaned my hands. (手是干净的 手是干净的) 常与常与already(已经已经), yet(已经已经), just(刚刚刚刚),ever(曾经曾经) 等词连用等词连用. already: 常用于肯定句中常用于肯定句中. yet: 常用于否定句常用于否定句,疑问句尾 疑问句尾. 3) 表示从过去开始并持续到现在的动作或状态,常与 表示从过去开始并持续到现在的动作或状态,常与 包括现在在内的一段时间的状语连用。包括现在在内的一段时间的状语连用。 She has lear
5、ned English for He has lived in Beijing since 5 years. 5 years ago. since , for 的用法的用法: 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+ ago Take notes He 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
6、间段时间段 He has kept the book for 2 weeks. 用for 或since填空 1. Mr. Brown has had his TV _ 15 years. for since 2. Ive taken driving lessons _last month. for3.My sister has had her cell phone _a month . since 4.My friends havent visited me _few days ago. for 5.We havent used our car _ a long time . for 6.Sh
7、e hasnt had a good cup of coffee _years. since 7.Tom has worn glasses _he was 7 years old. 疑难点疑难点 I worked here for more than twenty years . (我现在已经不在这里工作了我现在已经不在这里工作了 ) I have worked here for more than twenty years . (现在我仍在这里工作)(现在我仍在这里工作) 注:并非所有注:并非所有for作为时间状语的句子都用现在完成时作为时间状语的句子都用现在完成时 搞清一般过去时和现在完成
8、时的区别搞清一般过去时和现在完成时的区别 辨析 have been to 和 have gone to My father has gone to Shanghai for a meeting. 他(已经)去了上海。 My father has been toShanghai for a meeting. 他(曾经)去了上海。 She has been toChina . 她(曾经)去过中国。(人已经回来了) She has gone to China last week. 上周她去了上海 。(人可能回来了也可能没回来) have been to someplace. 曾经去过某地,已经回来
9、曾经去过某地,已经回来 has gone to someplace.某人去了某地,还没有回来 某人去了某地,还没有回来 用用have/has been to, have/has gone to填空填空: : 1. Where is your brother? has gone to He _ the shop. Hell be back soon. Have been to2. _ you ever _ to America? Yes, I _ New York twice.have been to have been3. Here you are at last! Where _ you _
10、? have been to I _ London. has gone to 4. David _Australia. Im sure hes already arrived. 5. Is Benny here? has gone to No, he _ the school library. He left five minutes ago. ? ? ? ? 9. He _ (go) to school on foot every day. goes 10._ you _ (find) your science book yet? have, found 11. If it _ (be) f
11、ine tomorrow, Ill go with you. is 12. The students _ (read) English when the teacher came in. were reading ? 13. Look! The monkey _ (climb) the tree. is climbing ? 14. My mother _ (come) to see me next Sunday. is coming ? 15. Ive lost my pen. _ you _ (see) it anywhere? Have, seen ? 1. I_ already _ (
12、see) the film. I _ (see) it last week. have, seen, saw ? 2. _ he _ (finish) his work today? Not yet. Has, finished ? 3. My father _ just _ (come) back from work. He is tired now. has, come ? 4. Wheres Li Ming ? He _ (go) to the teachers office. has gone ? 5. I _ (work) here since I _ (move) here in 1999. have worked, moved ? 6. So far I _(make) quite a few friends here. have made ? 7. How long _ the Wangs _(stay) here ? For two weeks. have, stayed ? 8. I _ just _ (finish) my homework. have, finished ? 1. have, seen, saw 2.
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