八年级英语下册 Unit 10 I ve had this bike for three years课件2 (新版)人教新目标版 课件VIP免费

sectionA grammarsectionA grammarsectionA grammarsectionA grammar八下英语八下英语 Unit 10I’ve had this bike fUnit 10I’ve had this bike for three years.or three years.八下英语八下英语 Unit 10I’ve had this bike fUnit 10I’ve had this bike for three years.or three years.现在完成时： 表示过去发生或已经完成的某一动作对现在造成的影响或结果，或从过去开始一直延续到现在的动作或保存的状态。结构： 主语 + have / has + 动词的过去分词一般疑问句： have / has … ? Yes, I have. No, I haven’t. Yes, she has. No, she hasn’t. 1. 现在完成时动词构成have /has + v 过去分词助动词否定haven’thasn’t疑问Have you…?Has he…?常与下列时间状语连用： just , already, yet,ever, never, before, several times现在完成时现在完成时1. 过去发生的动作对现在造成的影响或结果。和 already ， never,ever,just,before,yet 等状语连用。2. 过去已经开始，持续到现在的动作或状态，常与 for 或 since 引起的一段时间状语连用。动词构成： have/has+v过去分词have breakfastI have just had my breakfast. ( 现在我不饿 )I’m not hungry nowmoved herein 2004I still live hereI have lived here for three years.I have lived here since 2004/three years ago. nowpast2. 现在完成时动词可以表示开始于过去持续 到现在 ( 也许还会继续进行下去 ) 的动作或状态。1) I have studied English since last year. 我从去年开始学习英语。2) She has lived in Beijing for five years. 她住在北京已经五年了。注意 : come, go , leave, arrive, buy, lose, receive, join, die, bury 和 marry 等动词所表示的动作是一时的 , 不能延续的 , 故不能与 for …, since …等开头的表示一段时间的状语连用。不过 , 这些词用于否定句则可以与表示持续的时间状语连用，即动作的不发生是可以持续的。3. 现在完成时把过去的动作和现在的结果联系起来， 一般过去时只限于表示过去的动作本身 , 与现在 的结果无关。现在完成时与一般过去时在意义上 的区别举例如下： I have cleaned my room. (My room is clean now.) 我已经打扫过我的房间了。 I c...