do what I can 是个什么句子,后面是不是一定要有do (即do what I can do）?

do what I can 是个什么句子,后面是不是一定要有do (即do what I can do）? Don't you know What I can do?的What I can do与句子What can I do?为什么是一种意思的两种表达方式?这中间该怎么区分,是语法还是什么? I wonder what can I do这个句子是what引导的宾语从句么? what do I can do it这个句子存在不存在! What Eles Can I do ?什么意思 what can I do what can I do what can I do? what can i do I will do what I can to help you what引导宾语从句I will do what I can to help you what引导宾语从句 这里是不省略了can后的do I will do what I can do to help you what做第二个do后的宾语,我将做我能做的去帮助你 what can I do?和what I can do 有什么区别? 到底是 tell me what i can do 还是tell me what can i do Can you do what I can do? what can I do for you?I 什么a skirt i like hot food.well .what do you do句子中.well是翻译成什么? I will do what I can to help you .what I can 作什么成分啊 i dont think i can do it是个什么句子 是不是什么定语从句 表语从句? 为什么dont 要加在think前面?如题 can you tell me what i can do,can you tell me what can i do?what can i do?这3句话哪个是正确的?