Three years (have) passed since they mat last and for time ,three years(be)really a buy time.

分类: 作业答案 • 2021-12-20 03:03:08

问题描述：

Three years __(have) passed since they mat last and for time ,three years__(be)really a buy time.

答

have, is
three years三年，第一空强调个体，用复数；第二空强调整体，单数。

答

这里是三年，年份是复数（years都加S了说明可数）只有当表示抽象的时间（time）用单数具体的时间如果是复数形式如three years, eight hours,etc.

答

has,was

Three years __(have) passed since they mat last and for time ,three years__(be)really a buy time.