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模块四 Module IV Modern life《Grammar and usage(1)： The passive voice；Modal verbs and the passive voice》精品PPT课件优质课下载
is called
The pet dog ________________(treat) by a
Veterinarian(兽医）.
is being treated
A frog __________ ( catch) by a big bird just now.
was caught
I ________________(move) by the brave astronauts
Jing Haipeng, Liu Wang and Liu Yang.
have been moved
Basic pattern of the passive voice
be + done
The lovely robots attract the visitors.
The visitors are attracted by the lovely robots.
active voice
passive voice
How can we change a sentence into the passive voice?
How can we change a sentence into the passive voice?
1. Find the object of the sentence and use it as the subject of the sentence with the passive voice.
2. Decide the tense of the sentence and use the related form of its passive voice.
3. If necessary, use “by” to join the former subject, which should be put into its object form.
Tenses
The active voice
The passive voice
The simple present
The present continuous