一般现在时的被动语态
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一般现在时的被动语态
【例句】
1. Our
classroom is cleaned by us every day.
2. Workers are needed very much
here.
3. This English song
is not often sung by us.
4.
Is your grandpa taken care of by that
nurse?
5. When are trees
often planted?
【探秘】
★
一般现在时的被动语态表示经常性、习惯性的被动动作，由
“<
/p>
主语
(
动作承受
者
)+ is / am / are +
及物动词的过去分词
(+ by +
动作执行者
)”
构成，常与
now,
every day, often, usually, always,
never
等连用。
温馨提示：判断
该不该用被动语态主要看主语是否为谓语动词所表示的动作的承受
者。
< br>
★
一般现在时的被动语态句
型变换紧紧扣住助动词
is
，
am
或
are
进行：否定句在
< br>is
，
am
或
< br>are
后面加
not
；一般疑问
句将
is
，
am
或
are
提至句首。
一般过去时和一般将来时的被动语态
【例句】
1. Those novels were written by Mo
Yan.
2. The window
wasn’t
broken by
Jim.
3. Was the bridge
started last month?
4. Mary
will be given a gold medal.
5. The machine
won’t
be checked
today.
6. Will the classroom
be decorated before the festival?
7. A basketball match is going to be
held this Saturday.
8. These
trees are not going to be cut down.
9. Is the wall going to be painted by
the workers?
【探秘】
1.
通过例句
1~3
可以看出，一般过去时被动语态的结构为
“
主语
+ was / were +
及物动词的
过去分词
(+ by +
动作执行者
)”
；否定句是在
was / were
后加
not
；一般疑问句将
was /
were
提前。
2.
通过例句
4~9
可以看出，一般将来时被动语态的结
构为
“
主语
+ will be +
及物动词的过去
分词
(+ by +
动作执行者
)”
或
“
主语
+ am / is / are going
to be +
及物动词的过去分词
(+ by +
动
作执行者
)”
；否
定句是在
will
或
am / is
/ are
后加
not
；一般疑问句将
will
或
am / is /
are
提
前。
含有情态动词的被动语态
Teenagers should be allowed
to go out with their friends every night.
【要点讲解】
含有情态动词的被动语态结构为：情态动词
(should,
must, may, can, could
等
) + be
+
及物动词的过去分词。其否定形式是在情态动词后面加
not
，疑问形式是将情态动
词提前。如：
Many more trees should be planted this
year.
The books
can’t
be taken out of the
reading room.
Must the work
be finished by 6:30 pm?
【活学活用】
将下列句子改为被动语态。
You should brush your teeth before you
go to bed.
Your teeth
before you go
to bed.
Key:
should be
brushed