我想知道你是否昨天迟到了-英文

I want to know whether you were late yesterday
I want to know were you late yesterday

或者直接 Were you late yesterday?
因为你提问肯定是你想知道,所以前半部分可以省略

I wonder whether you were late yesterday ?
wonder 有疑问、想知道意思。

I want to know whether you were late yesterday

I wonder whether you were late yesterday .

谢了