can you tell Tom (from) his twin brother?I can tell (by) their smiles为什么这两个空要一个填from一个填by呢?

分类: 作业答案 • 2021-12-19 17:11:12

问题描述：

can you tell Tom (from) his twin brother?I can tell (by) their smiles
为什么这两个空要一个填from一个填by呢?

答

因为tell A from B意思是辨别A和B;而tell...by...的意思是通过什么方式辨别什么

答

tell A from B
从B中分辨出A来
tell by…
通过…方式分辨