题目

关于be covered with/by的问题.
请看例句:
1.Over all,more than 70 per cent of the surface of our planet is covered by water.
2.Most of the earth is covered with water.
为什么一个用by另一个又用with呢?

提问时间：2020-06-13

答案

be covered with是覆盖的意思,表状态.be covered by是被...包裹着的意思 ,表动作.
我是英语教师,再不明可问.