Unit 3 tomorrows world Grammar and usage 课件.ppt

1、Unit 3 tomorrows world Grammar and usage 课件,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,be + done,The passive voice,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,+

2、 done,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,be,How can we change a sentence into the 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

3、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 b

4、y 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

5、 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.,Fill in the blanks with the right form of the words given:,I _(give) a new book by my father on my birthday. English _(find) very useful. 3. The wo

6、rk _(finish) tomorrow. 4. The flowers _(water) by them now.,was given,is found,will be finished,are being watered,The railway _ (build) this time last year. The new way _ already _ (build). The new railway _ (build) by the end of last year. He told me the sports meeting _(hold) the next month. Rice

7、_(grow) in the south of the States.,was being built,has,been built,had been built,would be held,is grown,Modal verb + be + done,We can use modal verbs in the passive voice to talk about ability, possibility, duty, permission, etc.,Firefighters could be trained using RealCine.,Computers can calculate

8、 the position of the viewer at any time.,The position of the viewer can be calculated at any time.,Practice:,1. The viewer can touch the objects in the film.,2. The viewer may feel a real sense of achievement and happiness.,3. RealCine might not impress some viewers.,The objects in the film can be t

9、ouched.,A real sense of achievement and happiness may be felt.,Some viewers might not be impressed by RealCine.,4. Teachers could use RealCine in the classroom too.,5. Film-makers should use RealCine for all films.,6. Scientists ought to develop RealCine further.,7. The viewer must wear special gloves.,RealCine could be used in the classroom too.,RealCine should be used for all films.,RealCine ought