used to do改为否定句Jack used to live in a small village with his grandpa.改为否定句印象里不是应该在used和to之间加not吗?为什么答案是didn't use to
问题描述:
used to do改为否定句
Jack used to live in a small village with his grandpa.改为否定句
印象里不是应该在used和to之间加not吗?
为什么答案是didn't use to
答
一个是过去常常 一个是习惯于 不一样的
答
两种都可以
答
used to do 有两种否定形式
1.usedn't to do (used not to do)
2.didn't use to do
疑问也是两种
Used……?
Did……?
所以都可以,不过didn't use to 更加常见
答
这里是不定式,not use to do
情态动词才是在后面加not的,如can not