when ,how soon用法区别

3个回答

  • 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.