Unit 9 SectionA Grammar-4c课件2022-2023学年人教版八年级英语下册

Unit 9 Have you ever been to a museum? Section A Grammar focus -4c 学习目标 1 .Have been to 和have gone to 的用法及区别 2 .学习现在完成时的构成及用法。 3 .现在完成时和一般过去时的区别。 4 .动词的变化分类。 Discussion Journey to the West Have you seen Journey to the West ? Guilin Have you ever been to Guilin? 1 .我去过北京两次。I have been to Beijing twice. 2.昨天他没有去那儿，我也没去。 He didn't go there yesterday. Me neither. Review Grammar Focus Have you ever been to a science museum? Yes I’ve been to a science museum. / No, I’ve never been to a science museum. Have you ever visited the space museum? Yes, I have. I went there last yean/ No, I haven't. I've been to the art museum many times. Me, too. And I’ve also visited the nature museum. I've never been to a water park. Me neither. 现在完成时 现在完成时由主语+ have/has +过去分词构成。 其主要用法如下： 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. have been to & have gone to 区区别 比较：He has been to Beijing. 他曾去过北京。 (人已回来，可能在这儿) He has gone to Beijing. 他已经去北京了。 (人已走，不在这儿) have / has been (to)表示〃曾经到过某地"，说话时此人不在 那里，已经回来。侧重指经 历。 have / has gone (to)表示某 人〃已经去某地了〃，说话时此 人可能在路上或已到那里，反 正不在这里。 1. have / has been to常与ever, never, oncef twicef how many times等连用。 I have never been to America, so I hope to go there one day. 2. have / has gone to常用于含有sb.is out, sb. isn't in （…）等暗含某人不在说话现场的语境中。 Our math teacher isn't in his office. He has gone to the meeting room. o后为表示地点的副词 there, here等时，to要省略。 一般过去时与现在完成时的区别 比较：I have seen the film. 我看过这部电影。 （我了解这部电影的内容） I saw the film last month. 我上个月看了这部电影。 （只说明上星期看了这部电影，不 涉及现在的情况） —般过去时的时间状语有：yesterday, last week,... ago, in1980, in October, just now... 共同的时间状语有：this morning, tonight this summer, before, already,... 现在完成时的时间状语有：for, since, ever, never, just, already, yet, in past years ... 4a Put the correct forms of the verbs in the blanks. 1. A：Do you want _______(come) to the space museum? B：No, I’ve already _______(be) there three times. 2. A：Have you ______(see) the robots at the science museum? B：Yes, I ___