The ground is really wet,it must-------last night.为什么填have rained

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/08 13:41:19
The ground is really wet,it must-------last night.为什么填have rained

The ground is really wet,it must-------last night.为什么填have rained
The ground is really wet,it must-------last night.为什么填have rained

The ground is really wet,it must-------last night.为什么填have rained
现在完成时表示过去的事实对现在的影响 前一句就说了现在地是湿的,这就是现在的影响,很明显.回去看看语法书吧

must have rained 是对过去的一种假设。表猜测。说:昨天可能下雨了。而must rain是说的现在,对现在的猜测。