1.Mrs Green cleans the reading room every day
The reading room is cleaned by Mrs Green every day.
2.Miss Li teaches us English
English is taught to us by Miss Li./ 或：We are taught English by Miss Li.
3.She dosen't speak French
French isn't spoken by her.
4.We must send for a doctor right now
A doctor must be sent for (by us) right now.
5.The bad man made the workers workers work long hours
The workers wre made to work long hours by the bad man.
6.They call it jacket in English
It is called jacket by them in English.
7.We must water the trees as often as possible
The trees must be watered (by us) as often as possible.
8.We should turn down the radio while the baby is asleep
The radio should be turned down (by us) while the baby is asleep.
注意：我转换的句子中,有几个加了括号的,括号内内容可省可不省,但通常情况下,这几个句子由于已经知道动作执行的对象,所以一般都 省去.
