- A+
（I）被逼语态的构成
被逼语态的方法是由“助动词be+动词的曩昔分词”构成。助动词be跟着主语的人称，数，时态和口气的不一样而改变。各种时态的被逼语态方法如下：
1.一般如今时 am/is/are+V（p.p）
我们使用电能运起色器。
People use electricity to run machines. Electricity is used to run machines.
Is electricity used to run machines? Yes, it is . / No, it isn't.
2.一般曩昔时 was/were + V（p.p）
昨日咱们在山坡上种了许多树。Many trees were planted on the hill yesterday.
3.一般将来时 will/shall +be+V（p.p）
下星期咱们将举办一场运动会。A sports meeting will be held next week.
4.曩昔将来时 should/would +be+V（p.p）
他告诉咱们我们将在他家乡建一个洪流坝。
We were told that a big reservoir would be built in his hometown.
5.如今进行时 am/is/are +being+V（p.p） .
他正在油漆房子。He is painting the house. A house is being painted.
Is the house being painted? Yes, it is. / No, it isn't .
6.曩昔进行时 was/were +being+V（p.p）
当我进厨房时，她正在做蛋糕。A cake was being made when I came into the kitchen.
7.如今结束时 have/has +been+V（p.p）
他现已结束作业了。He has finished his work. His work has been finished.
8.曩昔结束时 had +been+V（p.p）
到上个月中止，他们现已把这本书翻译成了英语。
The book had been translated into English by the end of last month.
9.将来结束时will have +been+V（p.p） .
2,000 words will have been learned by the end of next year.
注：
1.富含神态动词的谓语变成被逼语态时，用“神态动词+be+V（p.p）”构成。如：
The machine must be operated with care.
2.富含"be going to", "be to"等规划的谓语，变成被逼语态时，别离用"be go
ing to +be +V(p.p)"和"be to +be+V(p.p)"。如：
The problem is going to be discussed at the meeting.
（II）由动词短语构成的被逼语态
一般情况下，只需及物动词才干跟宾语，而不及物动词不能跟宾语，所以只需及物动词才有被逼语态，不及物动词则没有被逼语态。但有些不及物动词后边跟上介词或副词后，变成一个动词短语，恰当于一个及物动词，就可以构成被逼语态。
约翰翻开了收音机。John turned on the radio. The radio was turned on.
奶奶照看我姐姐。Grandma takes care of my sister. My sister is taken care of by Grandma.
注：千万不要遗失介词或副词。
难点释疑：
主动方法表被逼意义
鄙人列情况中，谓语方法是主动的，但具有被逼的意义。
The food tastes delicious. 这种食物尝起来很可口。
The idea sounds good. 这个主见听起来不错。
The apples sell well. 这些苹果极好卖。
The clothes wash well. 这些衣裳极好洗。
一些固定句型标明被逼意义
a. be worth doing sth
The film is well worth seeing. 这部影片很值得一看。
b. have/ get sb/sth done have作使役动词没有被逼语态，但可用这种规划表被逼或使役。
I had my watch stolen. 我的手表被偷了。
c. sth need/want/require doing=sth need /want/require to be done
The room needs cleaning.=The room needs to be cleaned. 这间房子需要打扫。
