what are you buying book?和what do you buying book?
这2个句子都是错误的。。。。
(1) what are you buying book? 这个句子是就 you are buying books. 的特殊提问句,但这个句子的成分完整,根本不可能作出提问,而且逻辑上,翻译意思上也不通:你正在买书什么? 如果你是想问:你正在买什么,就是what are you buying? 注意:what are you buying? 这个句子成分缺失了:books.而由what代替了。
(2)what do you buying book? 这个句子语法上完全错误,正确应该是what do you buy? 一般现在时,用动词原形,