He has to look after the little baby.
The little baby
has to be looked after
Tom will clean the room tomorrow.
will be cleaned
His brother washes bowls every day.
1）一般现在时：You are invited to do this.
2）一般过去时：The story was told by her.
3、情态动词：The rubbish can be put into the dustbin over there.
1.They make shoes in that factory.
Shoes are made (by them) in that factory.
S(主语）+am/is /are +过去分词
2. They bought ten computers last term．
Ten computers were bought (by them) last term.
3．Amy can take good care of Gina ．
Gina can be taken good care of by Amy.
S+ can/may/must/should + be+过去分词
S+am/is /are +P.P
S+ can/may/must/should + be+ P.P.