"What book did you read ?"中的"what"充当哪种句子成分?

"What book did you read ?"中的"what"充当哪种句子成分? What did you do just now?___ A I read a book.B I 1.what (did ) you do yesterday afternoon?,i read a book .2(w What did you boy?(story book) what kind of book you like to read? what book have you read 可以用what+book直接这么表达,这么问吗 What did you read during the meeting?怎么回答? 翻译what eise did you read bes ide this magazine? What did you read during the meeting?中文 what did you do for me和why did you do like that分析句子成分 did you read a magazine?what are you like?where did you go o what did she do in the moring?she _______a book.A.read b.rea