use to疑问句和否定句

use to疑问句和否定句有两种方式：1 像其它行为动词过去时一样,借助于助动词did,used恢复原形use.2 直接用used,提前构成疑问句,后面加not 构成否定句

He used to be a little boy. Now he is a big boy and taller than his father.
I didn't used to go this way, but I do now.

She used to have a cat when she was a child.
I used to play badminton every weekend but I don't have time now.
Did you use to do football when you were on leave ?
I didn't use to like english, but I do now.