used to do改为否定句Jack used to live in a small village with his
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
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
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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
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
1年前
10
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