be used to do sth.否定形式是什么?也就是说,didn't used to do 还是didn't use to do
问题描述：
be used to do sth.否定形式是什么?
也就是说,didn't used to do 还是didn't use to do
答
前一个
这里的used 一词与事态无关,属于固定用法,如I am used to it
答
didn't use to do
答
be used to do 也是对的，意思是被用来做什么
e.g the pencil is used to draw a picture. 他的否定形式就是
the pencil is not used to draw~
答
,didn't used to do used在这里是形容词 不涉及时态
答
你问错了,应该是used to do 的否定used to do sth.句型表示“过去常常,过去习惯.”表示过去的某种习惯(过去经常反复发生的动作或状态).e.g.I used to live there when I was a child.n 否定式：used not to do sth....