1、GRAMMAR 现在完成时的被动语态【语境展示】观察下面句子，并试着归纳现在完成时的被动语态的结构和用法。1. Theyve been warned not to swim there.2. The house has been used for many years.3. The party has been planned since he came to China.4. Her novels have been translated into many foreign languages so far.5. The carpet looks nice. It has already b
2、een cleaned.6. They havent been told about it yet. 7. The result of their experiments hasnt been published yet.8. Have you ever been bitten by a dog?9. Has Toms homework been turned in yet?【自我归纳】通过观察，我们可以看出：现在完成时的被动语态的结构肯定式：have / has + _ +过去分词（句 1句 5）；否定式：have / has + not + been +过去分词（句 6句 7）；一般疑问式
3、：Have / Has +主语 + been +过去分词（句 8句 9）。现在完成时的被动语态的用法1. 表示过去开始的被动动作一直持续到现在，句中经常有 “for +一段时间”，“since +从句”，so far 等状语（句 2句 4）；2. 表示被动动作在过去发生或完成，但是对现在仍然有影响，句中经常有 already, yet, ever 等状语（句 5句 9）。【拓展】在时间、条件状语从句中，通常要用现在完成时的被动语态代替将来完成时的被动语态。如：I will go to play football as soon as the homework has been finished
4、.If a plan has been made, we should put it into practice.【即学即练】I. 将下面句子中的主动语态变为被动语态。 1. Nobody has heard of Susan since she moved to America. _2. They wont finish the experiment before ten oclock._3. We havent given them anything to eat. _4. Have you fed the pigs yet? _5. We have already discussed t
5、his question. _II. 用现在完成时的被动语态重组下面句子。1. a new hospital for women and children, build, in Beijing_2. more and more trees, cut down, by farmers_3. about 300 buildings and houses, destroy, in the earthquake_4. a lot of money, spend, protect the old temple_5. the price, bring down, in the past year_III.
6、 用括号内动词的正确形式填空。1. The same mistake _ (make) many times. 2. More than 100 famous films _ (show) in the city since July. 3. For his tenth birthday, Carl wanted a bicycle but _ (give) a guitar by his parents.4. Although it _ (play) many times, he still loves it. 5. Three new schools _ (open) in our cit
7、y in the past 5 years.参考答案【自我归纳】been【即学即练】I. 1. Susan hasnt been heard of since she moved to America. 2. The experiment wont be finished before ten oclock. 3. They havent been given anything to eat.4. Have the pigs been fed yet?5. This question has already been discussed. II. 1. A new hospital for w
8、omen and children has been built in Beijing.2. More and more trees have been cut down by farmers.3. About 300 buildings and houses have been destroyed in the earthquake.4. A lot of money has been spent protecting the old temple.5. The price has been brought down in the past year.III. 1. has been made 2. have been shown 3. was given 4. has been played5. have been opened
