D. when John asks
2. There are so many foggy days these days. We all want to know __C__. A. how can we do to prevent it B. how we can do to prevent it C. what we can do to prevent it D. what can we do to prevent it
态
around the sun.胡老
不管主句使用什么时态，
师说地球绕着太阳
从句都用一般现在时。
转。
注意：有些疑问词作句子的主语，所以问句本 身就是陈述语序，在变成宾语从句时，语序无 需变化。如：
1. Do you know what is happening over there? 你知道那边发生6年6考7次） 考点抢测
1. I don’t understand __B__ such a silly question
in class yesterday.
A. what did John ask
B. why John asked
C. who is John asking
2. Do you know what’s the matter with him? 你知道他怎么了吗？
2. 宾语从句的简化 当宾语从句的主语和主句的主语相同，且主 句的谓语动词是know, remember, forget, learn, ask, tell, show, teach等时，从句可简化为“疑问 词+不定式结构” She doesn’t know what she should do next. =She doesn’t know what to do next. 她不知道下一步该做什么。
