There are three kinds of dictionaries here,but I'm at a loss which (to choose from) 为什么有from?

分类: 作业答案 • 2022-06-11 10:47:23

问题描述：

There are three kinds of dictionaries here,but I'
m at a loss which (to choose from) 为什么有from?

答

at a loss from 是词组，对。。不知所措

答

后面省略了“these dictionaries”,choose From是词组,表示从……中选择