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课件网) Review Useful Structures UNIT 1 SCIENCE FICTION UNIT 1 SCIENCE FICTION 1. It was going to be tested out by Larry's wife, Claire. 过去将来时的被动形式，构成：was/were going to＋ be＋ done 2. All the work has been finished by now. 现在完成时的被动形式，构成：has/have ＋ been ＋ done 3. Now she was being looked after by a robot that looked so human，and it was disturbing. 过去进行时的被动形式，构成：was/were ＋ being ＋ done 4. You are invited to make a speech in our school. 一般现在时的被动形式，构成:is/are ＋done 5. Larry persuaded her that the robot wouldn't harm her or allow her to be harmed. 不定式一般式的被动形式，构成:to＋ be ＋ done Please read the following sentences from the reading text and think about their structures. 被动时态：be+过去分词构成，时态通过be表现出来 一、被动语态的相关概念 1. 语态是动词的一种形式，表示主语和动词之间的关系。 2. 英语动词有两种语态：主动语态和被动语态。 主动语态动词的主语是动作的执行者， 而被动语态动词的主语是动作的承受者。 指出句中的执行者和承受者。 Some trees are planted by us every year. 3. 被动语态是动词的一种特殊形式，一般说来，只有需要动作对象的及物动词才有被动语态。 承受者 执行者 We plant these trees. These trees are planted by us. 二、主动句与被动句的转换 主语 宾语 主语 宾语 由主动变被动的方法 s.(主格）+v. +o.（宾格）→ o.（主格）+be+ p.p.+ {by +s.(宾格)} 写出下列动词的过去式与过去分词 1. build 2. speak 3. eat 4. break 5. give 6. grow 7. write 8. think 9. love 10. water built built spoke spoken ate eaten broke broken gave given grew grown wrote written thought thought loved loved watered watered Practice 熟背课本 P117-118 《不规则动词表》 1.His brother washes bowls every day. 主 谓 宾(受动者) Bowls are washed by his brother every day. 三，将句子改为被动语态 2.He looked after the little baby yesterday. 主 谓 宾(受动者) The little baby was looked after by him yesterday . 3.Tom will clean the room tomorrow. 主 谓 宾(受动者) The room will be cleaned by Tom tomorrow. 4. Amy can take good care of Gina ． Gina can be taken good care of by Amy. 5. Some workers are painting the rooms now． The rooms are being painted by some workers now. 6. I was doing my homework at 8:00 last night． My homework was being done (by me) at 8:00 last night. 7.We have made twenty more keys． Twenty more keys have been made by us. 四、各种时态的被动语态构成 一般现在时： 一般过去时： 情态动词： 一般将来时： 现在进行时： 现在完成时： 过去进行时： 过去完成时： S+ am/is /are +done S+ was/were +done S+ can/may/must/should + be+ done S+ will + be + done S+ am/is/are + being + done S+ have/has + been+ done S+ was/were + being + done S+ had been +done 1 What is done cannot _____. (undo) 2 Janet _____ chairwoman of the student union last month. (elect) 3 Two hundred grammes of flour should _____ to the cake mix. (add) 4 A 3,000-seat venue _____ for the circus performance in November. (build) Complete the sentences with appropriate forms of the verbs in brackets. Then try to tr ... ...
