C. 主语+谓语+宾语+宾语补足语
在这个句型中，谓语动词后有一个宾语和一个宾语补足语，变成被动语态时，宾语转化成主语，宾语补足语也随之变为主语补足语：
All the villagers painted the houses
white. 所有村民都把房子涂成了白色。
-- The houses were painted white by all
the villagers. 房子都被所有的村民都涂成了白色。
They kept us waiting for a long time. 他们让我们等了很长时间。
-- We were kept waiting for a long
time. 我们等了很长时间。
We regarded him as the best doctor in
town. 我们认为他是城里最好的医生。
-- He was regarded as the best doctor
in town. 他被认为是城里最好的医生。
注意：
有些使役动词和感官动词,如make,
see, hear, watch, notice, observe, listen to等，在主动结构中跟不带to的动词不定式作宾语补足语，在变为被动结构时，不定式应加上to。
We heard him say good-bye to his
friends. 我们听见他向朋友们道别。
n He was heard to say good-bye to
his friends. 他被听到向朋友们道别。
n
D. 含有情态动词的主动句变被动句
含有情态动词的谓语变成被动语态时，用“情态动词+
be done”构成。
情态动词
cancould
maymight
must
havehad to
willwould
shallshould
ought to
主动形式
cancould do
maymight do
must do
havehad to do
willwould do
shallshould do
ought to do
被动形式
cancould be done
maymight be done
must be done
havehad to be done
willwould be done
shallshould be done
ought to be done
The machine must be operated with care.
这机器必须小心操作。
Such a sentence ought not to be used
here. 这个句子不应该用在这里。
What's done cannot be undone. 覆水难收。
People had to be reminded of the danger
that night. 那天晚上必须提醒人们当心危险。
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