请问May be 和May have been 的区别,它们分别在什么时候用?
问题描述：
请问May be 和May have been 的区别,它们分别在什么时候用?
答
“可能是”和“可能已经是”，后面一个多了完成时态
答
第一个是对现在或者将来的猜测
第二个则是对过去的猜测.
例如：You may be right.
You may come tomorrow.
He may have come here this morning but he didn't.