句子中的did非常见用法（详见下面）

Question

“Not until the taxi got to my school did i realise i had left my wallet in my home."求解啊，谢谢
did是什么用法，什么意思？

Answer 1

本句中的 did 是助动词。

 

助动词 do（过去式 did）除用来构成否定句和疑问句外，还有一种用来表示强调的特殊用法。

 

1、强调祈使语气，如：

I do want to be sure. 我确实想肯定。

Do comein! 千万要进来！

2、在陈述句中用来加强语气，如：

He does be at home.他确实在家。

I do understand.  我确实懂了。

You did have a tape recorder with you. 你确实带了录音机。

3、倒装句中强调倒装部分，如：

Little did we know what was in store for us. 我们不清楚留给我们的是什么。（We knew Little what was in store for us 的倒装）

Not untilthe taxi got to my school did I realize I had left my wallet in my home。直到公交车到了学校我才意识到把钱包落在家里，（ I did not realize I had left my wallet in my home until the taxi got to my school的倒装）【本句】

Answer 2

这个是倒装句，属于部分倒装，如果有be动词，情态动词，要放到主语前面，没有的话就得加个助动词，这里是过去时，所以用了did，如果不用倒装这个句子的顺序是

I didn't realise I had left my wallet in my home until the taxi got to my school.追问

所以did在这是助动词？

追答

是的

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