i have much time后面跟动名词还是to

i have much time后面跟动名词还是to It is time to have lunch 为什么be后面不跟动名词而更动词不定式 请问 in addition to 后面跟动词原型还是动名词? to后面是跟动名词还是动词原型? have much time to busy 的后面跟动名词还是不定式 practice后面跟动名词还是不定式? have a difficult time 后面跟todo还是doing I am looking forward to seeing him tomorrow.为什么to后面可以跟动名词. devote (time)to后面跟do还是doing?为什么? i don't have much time to eat breakfast I don`t have much time to do anything else.''