it is difficult to understand scotish people if you () their accent 答案为什么是are not used to呀

题目

it is difficult to understand scotish people if you () their accent 答案为什么是are not used to呀
be used to do 不表示被用来做什么吗

答案

这里是be used to （doing） sth,习惯于做某事,to是介词,后面接的名词,所以是正确的
而be used to do sth 中的to是动词不定式,意思是“被用来做”