改为被动语态,We ofen heard Mary sing in her bedroom.

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改为被动语态,WeofenheardMarysinginherbedroom.改为被动语态,WeofenheardMarysinginherbedroom.改为被动语态,WeofenheardMary

改为被动语态,We ofen heard Mary sing in her bedroom.
改为被动语态,We ofen heard Mary sing in her bedroom.

改为被动语态,We ofen heard Mary sing in her bedroom.
Mary is often heard to sing in her bedroom.
在主动语态中,使让动词(make,have,let)和感官动词(see,look,watch,notice,listen,hear,feel,find)后必省略to,但在被动语态中必须加上to

Mary singing in her bedroom was often heard

我们ofen听到玛丽唱歌，在她的卧室。

改被动为 Mary was often heard to sing in her bedroom (by us)
原句hear sb do sth中省略了to 改被动还原加to

Mary was ofen heard to sing in her bedroom by us .

Mary is often heard to sing in her bedroom .一定要加to 。因为在被动句中动词的不定式中to不能省略。

Mary ofen sing was heard in her bedroom by we.
我们经常能听到MARY在她卧室唱歌。

Mary's singing in her bedroom is often heard by us.

Mary is often heard to sing in her bedroom.

改为被动语态,We ofen heard Mary sing in her bedroom. We must water these young trees ofen.(改为被动语态) we heard them sing in shanghai 改为被动语态 1.We must water these young trees ofen,(改为被动语态). 将下列句子改为被动语态!Who wrote this novel?We heard him sing this song. 改为被动语态：We heard him sing in his room just now last sunday we heard them sing peking opra in that theatre改为被动语态 改为被动语态My mother looks after my little brother和We heard her sing the next room we speak China 改为被动语态 We call him Xiaobao(改为被动语态) we do it 改为为被动语态 I ofen see my brother play basketball after school 改为被动语态 I heard him singing改为被动语态which is correct?then I heard him sing? We have planted many trees.改为被动语态Many trees ( )( )( )by us.改为被动语态一空一词 We heard Kitty sing in the next room this morning.改为被动语态Kitty _______ _______ ________sing in the next room this morning. 被动语态改为主动语态 we will never forget the accident 改为被动语态 改为被动语态We can finish the work on time.