1.可以確定火星上沒有生命.
There is surely no life in the Mars.
2.據(jù)報(bào)道明天將有雪.
It is reported that it will snow tormorrow.
3.英語在世界上被廣泛運(yùn)用.
English is used all over the world.
4.他的汽車正在被修理.
His car is under mending
1.I saw the boy run yesterday.
The boy was seen to run yesterday.
2.You should finish the homework on time.
The homework should be finished on time.
3.We clean our classroom every day.
Our classroom is clearned every day.
4.We must build some new roads in the west of China.
Some new roads must be built in the west of China.