新概念第二册第45课.pptVIP

他一边打扫房间一边听音乐。 He listened to music while cleaning the room. 如果是主语不一致则必须用从句： 我打扫房间时，他在听音乐 He listened to music while I was cleaning the room. Sam was sure that the wallet must have been found by one of the villagers, but it was not returned to him. Three months passed, and then one morning, Sam found his wallet outside his front door. It had been wrapped up in newspaper and it contained half the money he had lost, together with a note which said: A thief, yes, but only 5o per cent a thief! 3．Sam was sure that the wallet must have been found by one of the villagers… must用于对过去已发生的事进行推测时，后面的动词要用完成式 我到这儿的时候他已不在了。他一定早走了。 When I arrived, he wasnt here. He must have left early. 4．it contained half the money he had lost, 我们既可以说 half the money，也可以说 half of the money，它们可以互相替代，但是money前都必须有the，因为是指特定的钱。再如： 这面包有一半已变质了。 Half the bread/ half of the bread was bad. Two months later, some more money was sent to Sam with another note: Only 25 per cent a thief now! In time, all Sams money was paid back in this way. The last note said: I am 100 per cent honest now! 5．In time, all Sams money was paid back in this way. 含一般过去式的简单句。 （1）in time可以表示“经过一段时间”或“最终”、“迟早”： 我最终／总有一天会把一切都告诉你的。 Ill tell you everything in time. （2）in this way表示“用这样的方式”： 必须注意你的拼写。 这样你才能最终成为一个好秘书。 You must pay attention to your spelling. In this way, you can become a good secretary in time. 被动语态 1) be + v. –ed 2) 不及物动词无被动语态，如： take place, disappear 3) 由 be 体现出不同时态 4) 注意含有情态动词的被动语态 把下列句子改为被动语态： 1. Someone has prepared a meal for you. ----A meal has been prepared (by someone). 2. Someone will translate the book into English. ---The book will be translated into English (by someone). 3. Someone must send a telegram to him. ---A telegram must be sent to him. 一般现在时：am／is／are done 一般过去时：was／were done 现在完成时：have ／has been done 过去完成时：had been done 现在进行时：am／is／are being done 过去进行时：was / were being done 一般将来时：shall ／will be done 过去将来时：should ／would be done 含情态动词：情态动词＋be done 一.被动语态的否定式:在第