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《Grammar and usage(1)： The passive voice；Modal verbs and the passive voice》最新PPT课件优质课下载
Unit 3
Learning aims：
By the end of the period, Ss will be able to
To master the basic forms of the passive voice
To learn some important Grammar rules
Lead in
看图完成句子
The man _________(call) “ Good husband”.
is called
The pet dog ________________(treat) now
by the nurse.
is being treated
A frog __________ ( catch) by a big bird just now.
was caught
The man is called “ Good husband”.
The pet dog is being treated now by the nurse.
A frog was caught by a big bird just now.
一、被动语态的定义：
语态是动词的一种形式，用以表示主语和谓语之间的关系。当主语是谓语动作的执行者，则为主动语态；当主语是谓语动作的承受者，则为被动语态。
被动语态由助动词be+过去分词构成，时态通过be表现出来。
am/is/are
一般现在时
am/is/are+being
现在进行时
shall/will+be