高中英语必修4Unit 3 Tomorrow s world--Grammar and ppt2 课件VIP免费

Unit 3 Tomorrow’s worldUnit 3 Tomorrow’s world The man _________(call) “ Good husband”.is called The pet dog ________________(treat) by veterinary. is being treated A frog __________ ( catch) by a big bird just now.was caught An argument _____ already ____________________ (put forward) has been put forward Point out the verb, the subject and the object in the following sentences:We kept food in the fridge.We must close the windows and the door.S v.O.SV.O Food was kept (by us) in the fridge.The windows and the door must be closed. How can we change a sentence into passive voice ?1. Find out the object of the sentence and use it as the subject of the sentence with the passive voice.2. Decide the tense of the sentence and use the related form of its passive.3. If necessary, use”by” to join the former subject, which should be put into its object form. When do we use the passive voice ?Many houses will be built here.1. 不知道或没必要指出动作的执行者。The song “ The East is Red” was written by a poor peasant.2. 强调动作的承受者。 The plan was supported by those who wished to have more chances to speak English.3. 动作的执行者有较长的修饰语。You are requested to attend the meeting.4. 出于礼貌，不愿意说出动作的执行者。 Change the following sentences into the passive voice:1. All of us like her.2. We are discussing the question.3. We have put off the meeting.4. I will develop my picture next week.She is liked by all of us.The question is being discussed.The meeting has been put off.My picture will be developed next week. be+ done am/is/are 一般现在时 am/is/are+being现在进行时shall/will+be一般将来时have/has+been现在完成时 be+ done was/were 一般过去时 was/were+being过去进行时would+be过去将来时had+been过去完成时 P...