used to能否看做副词成分?

used to能否看做副词成分? Poverty is less of a problem now than it used to be 这里的less是副词,修饰哪个成分? he used to run fast.used to 是什么词性,成分? i used to work 缺成分么 请问used to 是副词还是情态动词? he used to be a teacher 分析成分 副词能否修饰名词 day的副词,如题：Some old people are used to doing morning exercises_____.(day) used to do 可以与频度副词和表具体的过去时间连用吗 she is used to a vegetarian diet.请问used和to以及a vegetarian diet分别作什么成分呢? She isn’t used to living in the countryside now里的be used to 在句中做什么成分? hurt badly和be badly hurt能否详细讲一下把副词提前时,它是作什么成分,为何加be?顺便再说一下副词的位置规律 He used the cellphone to call his mother.中to call是什么成分 汉语语法中副词能否修饰副词 used to 静电场和静磁场叠加能否看做电磁场 频度副词 在句子中做什么成分?状语吗 如 I go to park regularly. 英语语法问题,used to在句中充当什么成分句子“There used to be a tree here.USED TO充当什么成分?变反义疑问句时是按照THERE BE句型么?可以举例句说明么?