主動語態與被動語態相互轉換
A.改為被動語態
1. We call maths the language of science.
Maths _____the language of science.
2. Where did they plant trees?
Where ______ trees ______?
workers built the Green Great Wall across the northern part of the country.
The Green Great Wall ________ across the northern part of the country.
4. The teacher made the students copy the text.
The students ______________ copy the text.
5. They produce silk in Suzhou.
Silk _________ in Suzhou.
built a bridge between the two islands lastyear.
A bridge __________ between the two islands lastyear.
B.改為主動語態
7. A birthday party will be had tomorrow.
We ______a birthday party tomorrow.
was seen to cross the street just now by someone.
Someone saw John _____the street just now.
another way be thought of to keep your wine or water warm?
Can ________ another way to keep your wine or water warm?
many trees are still being cut down in the USA.
___are still____ down too many trees in the USA.
答案：
called , planted built
made to 5. is produced 6. was built
7. will have 8. to cross 9. you think of
10. People/They , cutting
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