Unit 8 Have you read Treasure Island yet? 现在完成时（一）(共28张PPT)

Unit 8 Have you ever read Treasure Island yet? 助动词have (has)+过去分词done 1.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. I have lost my wallet. (含义是:现在我没有钱花了.) Jane has just had it. (含义是:简现在不饿了.) Michael has been ill. (含义是:现在仍然很虚弱) He has returned from abroad. (含义是:现在已在此地) 现在完成时是由助动词have, has＋过去分词构成的,过去分词的变化方法和过去式的方法一样，过去分词也有不规则的． You have talked. Have you talked? 基本结构：have/has + done 否定形式：have/has + not +done. 一般疑问句：have或has提前 时间状语： recently, lately, since… for…, in the past few years, etc. 过去分词的构成 1,规则动词: (1)动词词尾直接加-ed, look-looked (2)动词词尾不发音的e结尾时,只需加-d, move-moved (3)动词词尾为辅音字母加y时,将y改i为,再加-ed, (4)动词词尾是只有一个辅音字母的重读闭音节时,将最后的辅音字母双写后再加-ed, stop-stopped 2,不规则动词.参看137页 不规则动词表 Have you read…….yet? Treasure Island Little Women Yes, I have. I have already read it. No, I haven’t. Have you? Have you read…….yet? Treasure Island Little Women Yes, I have. I have already read it. No, I haven’t. Have you? What’s it like? It’s fantastic. Have you read…….yet? Alice in Wonder land Oliver Twist No, I haven’t. Have you? Yes, I have. I have already read it. Have you read…….yet? Alice in Wonder land Oliver Twist No, I haven’t. Have you? Yes, I have. I have already read it. What’s it like? It’s boring. Have you ……? 20，000 Leagues Under the Sea Harry Potter No, …… Yes ,…… Have you ……? 20000 Leagues Under the Sea Harry Potter No, …… Yes ,…… What’s ……. It’s ….. Have you ……? Robinson Crusoe Tom Sawyer No, …… Yes ,…… Have you ……? Robinson Crusoe Tom Sawyer No, …… Yes ,…… What’s…… It’s ……. ?Life and Strange Surprising Adventures of Robinson Have you ……? No, …… Yes ,…… What’s…… It’s ……. What’s it about? It’s about a man called Robinson and his life on an island. Have you …….? No,…… Yes,…… What’s it like ? It’s ….. What’s it about? It’s about a boy called Jim who goes out to sea and finds an island full of treasures. 1.充满了…….2.满是……..的 Have you …….? No,…… Yes,…… What’s it like ? It’s ….. What’s it about? It’s about four sisters growing up. 1.成长? 2.逐渐形成 Have you …….? No,…… Yes,…… What’s it like ? It’s ….. What’s it about? It’s about a boy called Tom Sawyer who lives in the united states. Many exciting things happen to him. sth. happen to sb. 某事发生在某人身上 总结现在完成时： 1、构成：have / has +过去分词。 2、概念： (1)表示过去或已经完成的某一动作对现在 成的影响或结果。常与下列状语连用:already, just, yet, ever, never, before (2)表示过去已经发生，持续到现在的动作或状态，可以和表示从过去某一时刻延续到现在（包括“现在”在内）的一段时间的状语连用。 a.for和表示一段时间的词组连用。 如：for 3 years b.since和表示过去某一时刻的词或词组连用。 如：since 1997, since two years ago,since last week ... ...