(B)10.Although the room is small,it is comfortable_______.A.live in B.to live in C.to live D.live这类题什么时候选B,什么时候选C(C)11.A cup_____ drinking tea.A.used fro B.is used to C.is used for D.used to翻译并详解选C的原因(C)18._______ do you study the hardest in your class for?A.Why B.How C.What D.Which为什么选C,请翻译整句话,
问题描述：
(B)10.Although the room is small,it is comfortable_______.
A.live in B.to live in C.to live D.live
这类题什么时候选B,什么时候选C
(C)11.A cup_____ drinking tea.
A.used fro B.is used to C.is used for D.used to
翻译并详解选C的原因
(C)18._______ do you study the hardest in your class for?
A.Why B.How C.What D.Which
为什么选C,请翻译整句话,
答
1it is +adj+ to do sth ,而sth要加介词，要不然一个句子不完整 不及物动词+介词
2be used for doing sth 被用来做，而be used to doing是 习惯于做某事 不符合题意
3what………………………………for？=why………………？（固定搭配）
……………………………………望采纳…………………………………………
答
B 因为it's +adj+to do这个句型.live在这里是不及物动词所以要加介词.
C 因为在这里use是被动语态.杯子被用来喝茶.所以是be used.for是表原因.
used to do 表示过去常常做某事,而现在往往不做了
be used to doing 表示习惯于做某事
be used to do表示...被用来做某事 所以这句话也可以：
A cup is used to drink tea.
C 因为what.for=why