本题涉及特殊疑问词的用法。答案如下。
What/which——具体内容。
Who——人
When——介系词加时间。
Where——介系词加地点。
Why——because加原因。
How——by加doing。
How soon——in加一段时间。
How long——for加一段时间。
特殊疑问句是用来对句子中某一特殊成分提问的疑问句,这种疑问句句末多用降调,一般以疑问代词和疑问副词开头。
一、提问主语或主语部分。疑问词作主语时,后面的动词用单数形式。
Who is cooking in the kitchen?
What is there under your bed?
二、提问be动词后面的表语。
Whose are those keys?
Who is that tall boy?
三、提问宾语。
Which do you want to take?
四、疑问副词的用法。语序为疑问词加一般疑问句。
When did you hear the news?
Where do you come from?
Why is he absent?
How did you come here?
How old will you be next year?
How tall are you?
How many cups of coffee do you drink every day?
How much coffee do you drink every day?
How long has he played the piano?
How often do you play the piano?
How far is it from here to the office?