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二、被动语态的构成:( the Structure of the Passive Voice.)
be+ done(________的过去分词)+ by…, be有人称和数的变化。当没有必要指出动作的执行者时，介词by 短语可以________.
1.English is spoken by lots of people
in the world.
2. A hospital was built in our hometown
last year.
省略
及物动词
主变被步骤:
1.找宾语: 即动作的承受者(改为主语)
He washed his car yesterday.
His car
3. 判断新主语的单复数:确定be动词的单复数.
be
4. 判断动词的时态 : 即be动词的时态.
2. 修改谓语的语态:即be+原V.过去分词
washed
5. 修改原句的主语 :即by +主语(变宾格).
(by him)
yesterday.
is
was
was
1．一般现在时(the present tense )
Class meeting ______every Thursday.
2．一般过去时 (the past tense)
These cups ___________by the boy.
am
is