Not until he came back did I go to bed .这个句子要用倒装我知道,但为什么前面不改成did he come呢?

Not until he came back did I go to bed .这个句子要用倒装我知道,但为什么前面不改成did he come呢?
Not until he came back did I go to bed .这个句子要用倒装我知道,但为什么前面不改成did he come呢?

Not until he came back did I go to bed .这个句子要用倒装我知道,但为什么前面不改成did he come呢?
NOT until 位于句首,倒装的是前面的句子啊

状语提前，主句倒装

固定句式