难The classroom is vevy dirty today.It is hard A.cleaning B.t

难
The classroom is vevy dirty today.It is hard
A.cleaning B.to clean it
C.to leaning D.to clean
It应该代classroom,那应该用被动,但没得.那It应该是形式宾语吧,那为什么不加it,
我认为不对啊 ,我们老师说是英语的习惯.
那为什么有It is easy to take care of the fish

tea30 1年前已收到1个回答举报

喵喵kitten 幼苗

共回答了24个问题采纳率：83.3% 举报

D
1）在这里It作形式主语
It is hard to clean
to clean是真正的主语,It代指to clean
也就是说,真正的句子是:
to clean is hard
很难打扫.
2）It代指Classroom
也就是说：
It(The classroom)is hard+(to clean).
这里的to clean是补语修饰hard
（教室是难的,什么难,难打扫的,这里的打扫就是修饰“难”的）
看你怎么理解……

1年前

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你能帮帮他们吗

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