have it + do 是什么语法?应该怎么样用?

have it + do 是什么语法?应该怎么样用? have someone do something是什么语法 do they have语法对吗? should have 是什么语法? --- you ---- your homework Yes,l---it a moment ago.A have done finished B did do finished C have done finished D will do finish 选A为什么?我想选B感觉比较对!这里的语法是什么? i have some homework to do这里to do在语法里是什么成分? How often do they have it checked? 语法问题这句话主谓宾定状补都是什么?包含什么语法?具体解释一下 i not have it!这句语法不对吧?是不是应该为i have not had it.对嘛?或是i do not have it? 关于句中WHAT的用法a computer can only do what you have instructed it to do.本人英语初学者 真的搞不懂句中那个what是什么语法 是同位语吗?还是什么?a computer can only do that you have instructed it to do 如果把句 i do have a job for you语法对吗,这是什么句型? Why is the girl crying so sadlyi think it adj to do sth 是什么语法 语法书中哪里找 I have no idea what to do it这句话符合语法吗还是I have no idea what to do It take sb.time to do sth如果句子用would take是什么语法现象? I have not enough money to buy a car,so I will have to do without 后一句是什么语法现象 can you do it语法正确吗 i can do it 语法对吗 it,you,have,do,yourself, I would have liked to have had it when I was a student.这是什么语法结构,虚拟语气吗?