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Unit 8 Have you read Treasure Island yet? Section A 语法课件:现在完成时 (共17张PPT)

日期:2024-04-30 科目:英语 类型:初中素材 查看:45次 大小:23434983Byte 来源:二一课件通
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Unit,语法,PPT,17张,完成时,现在
    (课件网) _____you ever _____somebody so much ? It makes you cry. _____you ever _____something so bad? You can’t sleep at night. _____you ever _____to find the words? But they don’t come out right. Have you ever, have you ever _____you ever _____in love, been in love so bad? You’d do anything to make them understand. _____you ever _____someone steal your heart away? You’d given anything to make them feel the same. have/has +done(过去分词) Have loved Have needed Have tried Have been Have had 现在完成时态 过去分词? 过去分词构成 1.直接加-ed。如:play-played 2.以字母e结尾的直接加d 。如:name-named 3.以辅音字母加y结尾的,变y为i加ed。 如:carry-carried 4.重读闭音节且末尾只有一个辅音字母,双写这个辅音字母再加-ed。如:stop-stopped 现在完成时的构成 肯定式:have/has + 动词的过去分词. 疑问式:Have/Has + 主语 + 动词的过去分词? 否定式: have/has + not + 动词的过去分词. 回答:Yes, 主语 +have/has. No, 主语+haven’t/hasn’t. Compare She had her breakfast just now. She is not hungry now. She has just had her breakfast. have-had-had She did her homework yesterday. She doesn’t need to do her homework now. She has already done her homework. do-did-done 现在完成时用来表示过去发生或已完成的动作或状态对现在造成的影响或结果,也就是说,动作或状态发生在过去但它的影响现在还存在. Compare He began to be interested in playing computer games when he was born. (He is still interested in it now.) He has been interested in playing computer games for 12 years. 12 years old be-was/were-been He has been interested in playing computer games since 12 years ago. 1.for+时间段 2.since+ 时间点(起点) 3.since+一段时间+ago=for+时间段 4.since+从句(常用一般过去时) 表示过去已经开始,持续到现在的动作或状态,也可以表示实质可能继续下去的动作或状态。通常和 for(段时间), since(点时间) 引导的时间状语连用.以及 so far, by now, these days, in the last ten years 等连用。 用for和since填空。 _____three hours _____three o’clock _____two days _____yesterday afternoon _____I came here _____last Sunday _____a week _____a long time _____1997 _____two weeks _____three years ago _____ last month for since for since since since for for since for since since 例句 ① I have never heard of that before. ② Have you ever ridden a horse? ③ She has already finished the work. ④ Have you milked the cow yet? Yes, I have done that already. ⑤ I’ve just finished my homework. ⑥ He has not come yet. 肯定句: 否定句: already, ever, just, before, so far never, yet 疑问句: ever, yet since for +时间点 (since 2014) +时间段 (for 4 years) Use the words in brackets to complete the conversations. 1. A: Would you like something to drink? B: No, thanks. _____. (just/drink some tea) 2. A: I heard you lost your key. _____? (find) B: No, not yet. I’ve just drunk some tea Have you found it yet 4a 3. A: Do you know when Tom is leaving? B: _____. (already/leave) A: When _____? (leave) B: This morning. 4. A: Is your sister going to the movies with us tonight? B: No. _____ ... ...

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