He is too young to be sent to school?The box is too heavy to carry/be carried.为何第一个句子必须用被动,第二个主被动都可以呢?

he is too young to go to school是什么意思 he is too young to (send /be sent )to school. He is too young to look after himself句子成分分析 The boy is too young to dress ____(he) He is too young to ( ) right from wrongHe is too young to ( ) right from wrongA.speakB.talkC.sayD,tell He is too young to go school.是什么意思?too.to.的句型是什么意思? He is too young to ride a bike同义句~He is ________ young _________ he _________ ride a bike. he is join the army.A.too young to B.enough young to C.very young to D.young enough to这道题一看凭语感就能选A.但为什么不选C和D 英语选择：The child is( )it.A.too young to do B.young too to do C.too young doing D.young enough doing 【改为同义句】The boy is too young to go to school.The boy is -- young -- he -- go to school. He is too young to go to school.（改同义句）He is( )( )( ) to go to school. He is_______ join the army.A.too young to B.enough young to C.very young to D.young enough to Tony is only three years old.He is too young to d() him self it is (i ) for the boy to dress himself ,because he is too young He is too young to do the researchHe is ___young___he can't do the resaerch Tom is young,and he can't go to school.改为too .to句型 He is too young to go to school.的同义句 He is too young to go to school.（写出同义句）