《九年级仁爱版英语上Unit_1_现在完成时态课件剖析》由会员分享，可在线阅读，更多相关《九年级仁爱版英语上Unit_1_现在完成时态课件剖析（33页珍藏版）》请在金锄头文库上搜索。
1、Present Perfect Present Perfect TenseTense 现在完成时现在完成时 Present perfect tensePresent perfect tense 现在完成时 构成构成: : have/has + 过去分词 （过去分词的变化分规则与不规则两种。 规则变化与过去式相同，不规则变化需要另记 ） 过去分词的构成 (1)规则动词的过去分词和它的过去式相同,即 在原形后加ed（以e 结尾的加d） work- worked arrive- arrived (2). 以y结尾的改y为i+ed study- studied try-tried (3).以重读闭音节
2、结尾的双写最后一个字母ed stop-stopped drag-dragged (4).有些动词的过去分词是不规则的，需要 逐个记忆。（背熟不规则动词表） go- gone take- taken A.肯定句 主语助动词have has + 动词过去分词 + B.否定句 主语助动词have has + not + 动词过去分词+ C.一般疑问句 助动词Have Has +主语+动词过去分词+ 肯定回答 ： 否定回答 ： Yes,主语+have/has No,主语 + have/has not havent/hasnt 二、句式 D. 特殊疑问句： 特殊疑问词+have/has +主语 +动词过
3、去分词+ 用法一：用法一： 1.表示过去的发生的动作对现在造成的的影响 或结果。即它的“完成用法”常与 already“ 已经”，just“刚刚”，ever“曾经”，yet“尚，还”， never“从来没有”,before“在以前”等连用. 例如： I have just cleaned my clothes我刚洗过 衣服。 （“洗衣服”是发生在过去的动作，对现在造成 的结果是“衣服干净了”）。 对比： I cleaned my clothes yesterday . 我 昨天洗了衣服， 强调的是我昨天洗了衣服这件 事。 它的时间状语通常为already“已经”，just“刚 刚”，ever“
4、曾经”，yet“尚，还”，never“从来 没有”,before“在以前”等。 already 多用于肯定句 Eg: I have already finished it . just 一般用于肯定句中，谓语动词前 I have just met him. yet 用于否定句和疑问句尾 eg: Has he finished his homework yet ? ever 多用于疑问句 Eg: Has Jane ever been to Shanghai ? 用already，just，ever，yet，never填空 1. Have you _ visited the Geat Wall?
5、2.He has _ finished his homework, so he can go to play basketball . 3.He has_left, when you come back. 4.Have you watered the plants _ ? 5.I have _seen such an interesting film before. ever already just yet never ExercisesExercises 1. I _(have) lunch already. . 2. Has the train_ (arrive), yet? 3.Tom
6、 _ never_ (be to ) China. 4. The twin _just _(see) my father. have had arrived hasbeen to hasseen 用法二： for+一段时间 since+一个时间点 since+一段时间 ago since+一般过去时句子 E.g. Kate has lived here for 3 years. Kate has lived here since 2000. Kate has lived here since 3 years ago. Kate has lived here since she came to
7、China. 表示过去已经开始，一直持续到现在的动 作或状态,并且有可能再持续下去。动词 使用延续性动词。常与for或 since引导的时间连用 用since或者for填空 1. My brother has worked in this shool _ 2006. 2. The Germans have lived in the city _ ten yeas. 3. I have had this book _ two days ago. since for since IV.分清 for和since的用法 1.We havent seen each other _ a long time
8、. 2.His father has been in the Party _ 10 years ago. 3.The film has been on _ 20 minutes. 4.Mr Green has worked here _ he came to China. 5.His grandparents have been dead _ several years. 6. Its five years _ we met last time. for since for since for since Fill in the blanks 英语动词 延续性动词 终止性动词 begin, s
9、tart, die, buy, leave, come 不能与表示一段时间的状语：for+时间段, since+时间点/ 从句连用,也不能用在how long引导的特殊疑问句中. 终止性表示动作的发生与结束于一瞬间完成,不能再延续 终止性动词要表示持续时, 可用以下方法: .将时间状语改为时间段 + ago,句中谓语动词用一 般过去时. eg. 我弟弟参军两年了. My brother joined the army two years ago. .若保留for+时间段,since+时间点/从句, 或用在 how long 句型中,则需将终止性动词改为相应的状态 动词或延续性动词 begin,
10、 start, die, buy, leave, come 常见短暂性动词转化为延续性动词的有 come/go-be leave- be away (from) come/arrive-be in/at +地点 begin/start-be on die-be dead buy-have borrow- keep catch a cold -have a cold close-be closed join- be a member of be in + 组织名称 fall ill-be ill come/go- leave- come/arrive- begin/start- die- buy
11、- borrow- catch a cold - close- join- fall ill- be be away (from) be in/at +地点 be on dead have keep have a cold be closed be a member of be in + 组织名称 be ill ExercisesExercises His father has died. (for 2 years) The football match has begun.(since9:00a.m) The twins have joined the army. (since they w
12、ere 18years old) My teacher has left Nanjing. (for 3 days) His father has been dead for 2 years. The football match has been on since 9:00 a.m. The twins have been in the army since they are 18years old. My teacher has been away from Nanjing for 3 days T or F 1.我买了这块手表五年了。 2.这位老人已经死了十年了。 I have boug
13、ht this watch for five years. I have had this watch for five years/since 5 years ago. I bought this watch five years ago. The old man has died for ten years. The old man has been dead for ten years/since 10 years ago. The old man died 10 years ago. F F T T T T III.分清终止性动词和延续性动词 have/has gone tohave/has gone to have/has been to have/has been to have/has been inhave/has been in have/has gone to:去了某地（已经去了或在 途中，还没有返回）； have/has been to:去过某地（曾经去过某地 ，现在已经回来了,
