he has refused to help them 为什么是S+V+DO结构?refuse不是不及物动词吗?我的英语很渣.

I agree,but the problem is__he has refused to.为何用that 不用what?这是一个表语从句,从句里不是缺少宾语吗?I agree,but the problem is what he has refused to.what 做refused to He has refused to help them这个简单句them为什么要放在to help的后面, He has asked（ ）abusinessman to fly to Rockall and he refused.a.from b.ny c.with d.out of选哪个,为什么 At first he refused to accept any responsibility but he ended up apologizing为何是apologizing The young man__a well-paid job in that big company, but, to our ,he refused itA.is offeredB.offeredC.has pfferedD.was offered he has refused to help them 为什么是S+V+DO结构?refuse不是不及物动词吗?我的英语很渣. At first he refused to work with us,but__he has changed his tune.A later B late C lately D.finally为什么不选D He asks that he be given an opportunity to explain why he’s refused to go there.语法讲解 Don’t you think it necessary that he ______ to Miami but to New York? -I agree, but the problem is ______ he has refused to为什么这里第二空为什么用THAT?我觉得这里应该缺少成分啊 the reason he refused my inviation is that he has been.为什么这个是that写because行不 He has gone to Shenzhen. He think he has been to shanghai ,does he. 单句改错,to do next is unkuown to us.he refused going there. He refused to attend the party. because he didn't want to meet John. 怎么改写成现在分词结构? he was asked by a cusinessman to fly to Rockall and he refused句中and是什么 He refused the request on moral grounds .That’s ____________ he refused my invitation 为什么这句用entrance这个名词As he has no ticket,he was refused entrance to the stadium.entrance to the stadium 在这句中做什么成分?句子意思我知道.英语牛津高阶上有这么一个例句：I was refused admittance.所以我