1、be动词有am,is,are
2、特殊疑问句以特殊疑问词开头,对句中某一成分提问.
Ⅰ.常用的疑问词可先分为3种:
疑问代词：what,who,which,whose,whom
疑问副词：when,where,why,how
疑问形容词：what（which,whose）+名词
Ⅱ.特殊疑问句有两种语序：
1．陈述句的语序：疑问词（＋主语）＋谓语动词＋其他成分.通常为疑问词作主语或主语的定语,即对主语或主语的定语提问,如：
Who is sitting at the table?Whose watch is broken?
2．如疑问词作其他成分,即对其他成分提问,其语序是：疑问词＋一般疑问句语序?如：
what grade are you in?
What does he look like?
Where do you come from?
What day is it today?
How do you like it?