be used to +动词?名词?

be used to +动词?名词? used to be是系动词吗! to be living 是名词 还是动词 用used to do,be used to do,be used to doing和括号中动词的适当形式填空 用 used to do ,be used to do ,be used to doing 和括号内动词的适当形式填空. Used to be used to be used to和used to的to是介词还是动词不定式? 请问be动词必须得放到used to后面吗? 动词+名词+to不定式+动词,那么Be动词+名词+动词也要加to不定式吗?（be动词+名词+to不定式+动词） get used to 和be used to 哪个加doing 哪个加动词原形啊! be used as .be used to .be used for .be used to doing.used t be used for be used to be used from区别