评论
打印
Family Show
家庭剧场
It's very interesting to read.
读起来很有趣。（to read it，动词后无需介词）
English is difficult to learn.
英语难学。（to learn English，动词后无需介词）
It's very comfortable to sit on.
坐上去很舒服。（to sit on it, on不可缺少）
It's very comfortable to sleep on.
睡在上面很舒服。（to sleep on it, on不可缺少）
I need a pen to write with.
我需要一支笔写。（to write with a pen, with不可缺少）
I need paper to write on.
我需要纸来写。（to write on paper, on不可缺少）
I've nothing to write about.
我没什么可写的。（to write about nothing, about不可缺少）
