be covered with和be covered by的区别：用法不同、强调重点不同。be covered with意为盖满、被…覆盖着，是一个系表结构，表示处于某种状态；be covered by意为被…覆盖住，是被动语态，强调动作。
一、be covered with的中文释义及用法介绍
be covered with中文翻译为盖满、覆盖，是一个系表结构，表示处于某种状态。例句有：
1、Plants must be covered with a leaf-mould or similarly protected if frost threatens.
如果霜冻来临，植物必须盖上腐叶土或用类似方法加以保护。
2、It may be covered with any type of soft material.
它可以使用任何类型柔软的材料。
3、These seeds must be covered with a layer of earth.
这些种子必须覆上一层土。
4、In a few year's time, those mountains will be covered with trees.
过几年后，那些山上全种上树。
5、All of them have be covered with a film of gentle light.
将要面临的挑战，都已被覆盖上了一层柔和的光辉。
二、be covered by的中文释义及用法介绍
be covered by中文翻译为被覆盖;被…覆盖；是一个被动语态，强调动作。例句有：
1、The rest of the expenses would be covered by the insurance company.
其余的费用由保险公司承担。
2、These are the areas that need to be covered by the writers.
这些都是需要由作家涵盖的范围。
3、Won't these costs be covered by chapter eleven?
这些支出不会被第11章掩盖掉吗？
4、Any extended illness will be covered by insurance.
超出一定时间范围将会由保险公司负责支付。
5、All my living expenses and tuition will be covered by the state.
我的所有生活费用和学费将由国家支付。
