为什么英语账上have to 后面为什么就是动词原型那?

为什么英语账上have to 后面为什么就是动词原型那? Let's后面为什么不用drink,to have ,to eat have to是动词可后面为什么还能接动词do. I have just moved to a house in Bridge Street上句中的move后面为什么跟to?to还有什么用法?是否可以举些例子 they have come bake to you now 为什么have后面加do的形式?不懂 现完时have been to there为什么be后面可以+地点?忘了,抱歉,的确没to 这一英语句子——为什么不加to?Many students have difficulty deciding whether to continue studying or（to) begin developing a career.我认为那个or后面应该加to,为什么没加, want后面为什么加TO if i have only enough to eat and to wear.only enough为什么在have后面啊,enough修饰 there is have got to be something wrong with him.have got to 后面为什么加be? have ever 为什么后面加been it is the first time that I -have come to BeiJin为什么要用完成时啊,后面 It is time to have lunch 为什么be后面不跟动名词而更动词不定式 i have no room to live in 后面为什么要加介词in You need to have healthy eating habits这里的habit后面为什么要加s I have many English homework to do 为什么后面没有it i have much homework to do 中为什么可以省略后面的it he gave his life to helping the Chinese people 为什么to后面用helping?RT~是英语课本上的一句话