问题描述:
It has rained for three days 这个用法对吗?rain是动态动词,可以用于带‘for’的现在完成时吗?
还是应该是 It rained for three days
It has been raining for three days
还是应该是 It rained for three days
It has been raining for three days
问题解答:
我来补答展开全文阅读