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模块四 Module IV Modern life《Grammar and usage(1)： The passive voice；Modal verbs and the passive voice》新课标PPT课件优质课下载
A frog __________ (catch) by a big bird just now.
was caught
The?car?__________________ (repair)?
for?two?hours.
has?been?repaired
The pet dog _______________ (treat) by a vet.
is being treated
A new building ____________ (build) here soon.
will be built?
语态 (Voice) 是动词的一种形式，它表示句子的主语和谓语动词之间的关系。语态通常分为主动语态(Active voice)和被动语态。 (Passive Voice)
被动语态 (Passive Voice) 表示句子的主语是动作的承受者。其句子的谓语动词是：be + V-ed形式。
How can the active voice be changed into the passive voice?
Let’s enjoy a short flash on how to change the active voice into the passive voice.
Point out the verb, the subject and the object in the following sentences:指出句中的主谓宾语。
We kept food in the fridge.
We must close the windows and the door.
S
V.
O.
S
V.
O.
Food was kept (by us) in the fridge.
The windows and the door must be closed.
The Passive voice