what big convenience the taxi brings to us!这句话有什么语法?关于what的语法

what big convenience the taxi brings to us!这句话有什么语法?关于what的语法 convenience convenience convenience what a big. What a big what is big for What a big family! what's the big What a big school! What a big school! big fat(!)what is big fat mine convenience是什么意思 convenience 用法 for convenience convenience是什么意思 convenience是什么意思 we can drive the car what can fly to company more convenience 语法对吗