Unit 8 Have you read Treasure Island yet？第三课时 Section A（Grammar Focus-4c）（作业课件）-【优翼·学练优】2022-2023学年八年级下册初二英语同步备课（人教版）

优型 学练优八年级英语下(RJ) 优超 第三课时(Grammar Focus4c) 语法精讲 现在完成时（一】 助动词have/has+过去分词 构成 肯定句：主语+have/has+过去分词+其他 否定句：主语+have/has+not+过去分词+其他 型 般疑问句：Have/Has ①肯定回答：Yes,主语+have/has.如：Yes,I have. +主语+过去分词+其他？l②否定回答：No,主语+haven't/hasn't.如：No,I haven't 现在完成时（一） 表示过去某一时间 标志词：for+一段时间，since+过去的某个时间点/从句。如：They 开始并一直持续到 have known each other since they were children他们从小就认识。 用法及标志 现在的动作或状态 表示过去发生或已经 标志词：since,before,already,.yet,ever,never,just等。 完成的动作对现在造 如：I have already seen the film.我已经看过这部电影了。 成的影响或结果 般过去时只强调过去的动作：现在完成时强调过去的动作对现在的影响 与一般 般过去时通常与表示过去的明确时间状语连用：现在完成时的时间状语较模糊 过去时 般过去时只表示动作发生在过去；现在完成时表示过去的动作 的区别 或状态延续到现在并可能持续下去 语法精练 I,用所给动词的适当形式填空。 1.I already the film.I it last week. (see) 2.- Wei Hua yet? -Yes,she just now.(come) 3.Your father just his work.You can ask him to have dinner.(finish) 优 4.Someone take)the bags away.Now there's nothing on the desk. 5.My mother (be)a teacher for 16 years. 6.Jack (move)to Changsha 8 years ago. Ⅱ.单项选择。 ( )1.-How about the third season of documentary Aerial China(《航拍中国》)？ -Great.I it twice. A.watched B.watch C,will watch D.have watched 优超 ()2.Sally where she had left the car and the police found it this morning. A.forgot B.has forgotten C.forgets D.had forgotten 优 ()3.-Has Jack solved the math problem? -Not yet.But I believe he in a few minutes. A.has worked it out B.will work it out C.was working it out D.works it out 优 ()4.（2022·重庆A卷)一Excuse me,what is Nick doing? 一Look！He flowers outside. A.waters B.watered C.is watering D.has watered