The bed is so small that I can't sleep in
问题描述：
The bed is so small that I can't sleep in
这里的in在整个句子里的作用是什么,为什么不写全 in the bed.
答
完整的句子是The bed is so small that I can't sleep in the bed.但是前后有两个短语句子,为了避免重复,冗长.所以把后面的the bed 省略.例如,我们需要张纸写字.We need a piece of paper to write on(the paper）,p...