如何变成被动语态

You should pay attention to your prounciation.

Your pronunciation should be paid attention to.首先要分清楚是“什么”被怎么了，还要注意介词to不能省略

she found the book very interesting.

the book was found very interesting (by her).

he asked me to work on the farm with him.

i was asked to work on the farm with him (by him).

mother gave me a new desk as a present.

a new desk was given to me as a present (by my mother).

i was given a new desk as a present (by my mother).

you could give him a ticket to a ball game.

a ticket to a ball game could be given to him (by you).

he could be given a ticket to a ball game (by you).

we never hear her speak english,

she is never heard to speak english (by us).

首先主谓双宾句型的被动语态即可用直接宾语事物作主语引导被动语态句子，也可用间接宾语引导被动语态句子，其次原句的主语人物常变为其宾格代词放在by之后且可省略。

至于频率副词是放在助动词be之前还是之后？通常将频率副词是放在助动词be之后，但有情态动词时，放在情态动词之后助动词be之前！我的答案和讲解你满意吗？