8下9---2.ppt

* 我去过北京两次。 I _____ ______ _____ Beijing twice. 2. 旅客已经上船了吗？ ________ the passengers ______ on board yet? 3. 这个故事如何结束？ How did the story _______ ______? has been to Have Complete the sentences. end up gone 4. 昨天他没有去那儿，我也没去。 He didn’t go there yesterday. ______ ________. 5. 你听说过太空站吗？ Have you ever ______ __________ the space station? Me neither heard of/about 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 year./ 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. I/You/We/They have not finished the work. He/She/It has not finished the work. I/You/We/They have finished the work. He/She/It has finished the work. 否定式 肯定式 构成：have(助动词) + p.p has(第三人称单数助动词) + p.p Yes, you/I have. No, you/I haven’t. Yes, he/she has. No, he/she hasn’t. Have I/you finished the work? Has he/she finished the work? 回答 疑问式 have not 常缩略为 haven’t。 has not 常缩略为 hasn’t。 表示过去发生或已经完成的动作对现在造成的影响或结果。 Have you had your lunch yet? Yes, I have. I have just had it. (现在我不饿了) 现在完成时常与时间副词already, never, ever, just, before, yet等连用。 I have already taught him some English. John has never been to the space museum. My boy has just started junior high school. ever 意为“曾经”，用于疑问句或否定句中，放在助动词与过去分词之间。 e.g. Have?you?ever?been?to?Hong?Kong? 你曾去过香港吗？?? I?haven’t?ever?spoken?to?her. 我未曾和她说过话。?? never意为“从来没有”常与before连用，多放在助动词与过去分词之间。?? e.g. I?have?never?travelled?by?plane?before. 我以前从来没有乘飞机旅行过。?? 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