将下列句子改为被动语态!
问题描述：
将下列句子改为被动语态!
1,I warned her never to smoke.
2,He asked me not to excuse him.
3,He teacher expects,the boy to take a great interest in English.
答
1.She was warned never to smoke by me
2.I was asked by him not excuse him
3.The boy is expected by his teacher to take a great interest in English.