cover with和cover by的区别

The pathway was completely covered by the dense foliage.这里cover表隐藏，掩住，by引导媒介。
The field is covered with snow.这里cover表盖住，被动语态。
不太清楚这个区别。

cover with主要用在主动语态：i cover the table with cloth.
cover by 主要用在被动语态：the table is covered by cloth

COVER WITH是用什么覆盖 COVER BY是被什么覆盖

conver： with 是表示主动的 by 是表示被动的

是be covered with和 be covered by 吧，前一个是“同什么一起被覆盖”，后一个是“被什么覆盖”。