先來看一個(gè)例句:

The person must be taken care of by his son.

這個(gè)人一定要由他兒子照顧。

含有情態(tài)動詞的句子變?yōu)楸粍诱Z態(tài)時(shí),在情態(tài)動詞后面加上be動詞即可,其句型如下:

肯定句:主語+情態(tài)動詞(can,may,must)+be(永遠(yuǎn)是原形)+過去分詞~.

否定句:主語+情態(tài)動詞+not +be +過去分詞~.

疑問句:情態(tài)動詞(Can,May,Must)+主語+be +過去分詞~?

注意

[be going to +動詞原形]句型變?yōu)楸粍诱Z態(tài)時(shí),我們把be going to看成一個(gè)詞,就如同情態(tài)動詞can一樣,因此它的被動語態(tài)應(yīng)該是[be going to be +過去分詞]。

He is going to make it.→It is going to be made(by him).他會做的。

We can change water into ice.

我們可以把水變成冰。

Water can be changed into ice.

水可以被變成冰。

You must not take out any books.

你不可以拿走任何一本書。

Any books mustn't be taken out by you.

Can you use it?你會使用它嗎?

Can it be used?它能(被)用嗎?