when ,how soon用法区别
问题描述：
when ,how soon用法区别
答
when 副词
1.(用作疑问副词)什么时候,何时
I'd like to know when they'll let him out.
我想知道他们什么时候放他.
When did you last see Margaret?
你上一次见到玛格丽特是什么时候?
2.(用作关系副词,引导关系从句)当...时
There were times when I didn't know what to do.
有些时候我不知道该怎么办才好.
how soon 时间/期间〕多快
eg.How soon will you finish your homework
In about an hour.