Unit1 Past and present Grammar.课件 2022-2023学年牛津译林版七年级英语下册

Unit1 Past and present Grammar 1 Look and say Have you ever taken the temperature ? Yes, I have . No, I haven’t. 2 Look and say Have you ever seen this movie? Yes, I have . No, I haven’t. 3 在此处单击添加文本标题 Look and say Have you ever been to Disney Land? Yes, I have . No, I haven’t. 4 Look and say Have you had the bread this morning? Yes, I have . No, I haven’t. 5 观 察 1.Have you ever taken the temperature? 2.Have you had the bread this morning? 3.Have you ever been to Disney Land? 4.Have you ever seen this movie? 现在完成时的肯定结构：have\has+过去分词+... 6 现 在 完 成 时 的 概 念 表示从过去某一时刻开始并一直延续到现在的动作或状态,但动作或状态可能仍在继续。常与for和since引导的时间状语连用。 ①I have learnt English for more than ten years.我已经学了10多年的英语。 ②She has lived here since she was born. 自从她出生时就一直住在这儿。 7 ②陈述句否定形式:主语+ have/has+ not+过去分词+... （注意：have not/has not可缩写为haven’t/hasn’t） 现在完成时的基本句型 e.g.  我还没吃午饭。        I haven’t had lunch yet.   8 现在完成时的基本句型 ③一般疑问句形式及其答语： Have/Has+主语＋过去分词＋…？ 肯定回答：Yes , 主语＋ have/has. 否定回答：No , 主语＋ haven’t/hasn’t. e.g.－Has he gone to Beijing? 他去北京了吗？ －Yes, he has ./ No, he hasn’t. 9 现在完成时的基本句型 ④特殊疑问句形式：（疑问词+一般疑问句）    疑问词+ have/has+主语＋过去分词＋…？    e.g.     他去了哪里？ Where has he gone? 10 现 在 完 成 时 的 标志词 1、表示过去发生的动作对现在造成的影响或结果，常与副词 just，already, before, yet，never, ever等连用。 ① I have never heard of that before. ② Have you ever ridden a horse? ③ She has already finished the work. ④ I’ve just finished my homework. ⑤ He has not come yet. 11 现 在 完 成 时 的 概 念 1. already 已经，常用于肯定句中。 I have already seen the film. 我已经看过这部电影了。 2. yet 1) 已经，常用在疑问句中。 Has Linda read the book yet? 琳达已看过这本书了吗? 2) 还，仍然，常用于否定句和疑问句。 He has not begun to work yet. 他还未开始工作。 12 3. ever 曾经，主要用于疑问句 Have you ever wanted to travel around the world? 你曾经想要周游世界吗？ 4. never 从来没有，表示否定 He has never seen such a tall building. 他从未见过这么高的楼。 5. just 刚刚，常用于肯定句中 I have just finished lunch. 我刚吃过午饭。 不规则动