初二上学期英语（要有原因）Myfrienddidn'tinvitemetohisbirthdayparty.Ireallydon'tknow.--Youshouldwritehimaletter.A.howtodoB.whattodoC.whatdoesD.whatdoing（Q：A

Question

初二上学期 英语 （要有原因）
My friend didn't invite me to his birthday party. I really don't know _______.
-- You should write him a letter.
A. how to do B. what to do C. what does D. what doing
（Q：A、B选项怎么在做题时区分?）
答案选 B

Answer 1

第一项表达的是方式,就是语法意义上的状语；
第二项表达的是内容,就是语法意义上的宾语.
再者,how的话,应该是how to do this,因为,动词do必须有宾语,否则该答案就错误；
what to do中的what就是做do的宾语,在语法上意义完整.