由不及物動詞+介詞或副詞形成的被動語態(tài)

Many trees are cut down by workers.

許多樹木被工人砍倒。

不及物動詞不能跟賓語,當(dāng)然就沒有被動語態(tài)了,但有的不及物動詞,后面跟上一個介詞或副詞后(即形成所謂的動詞短語),其作用和一個及物動詞一樣,這樣,在變成被動語態(tài)時,千萬不要把介詞或副詞去掉。

例如:

She looks after them.

她照顧他們。

(○)They are looked after by her.

(×)They are looked by her.

We laughed at him.

我們笑話他。

He was laughed at(by us).

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動詞短語的被動語態(tài)

take care of(照看)→be taken care of

cut down(砍倒)→be cut down

laugh at(嘲笑)→be laughed at

look after(照料)→be looked after

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被動語態(tài)的動詞短語

以下這些短語本身即是被動語態(tài)的形式,不需再加“by”。

be covered with??????????????????用……覆蓋著

be surprised at????????????????????對……感到驚奇

be known to???????????????????????出名

be interested in??????????????????對……感興趣

be made of(from)??????????用……制造的