Question

be covered with和be covered by有什么区别?

Answer 1

参考

这两个短语的共同意思是“被…所遮盖”,当介词宾语为非人为的自然物时,两者可互换。例如:

The mountain is covered with〔by〕 snow all the year round.山上终年积雪。

其区别是：

1、强调点不同。

强调状态时多接with,强调动作时多接by。例如:

1）The mountains are covered with forests.

山上长满了树木。

2）His teeth were never entirely covered by his lips.

他的牙齿从未被嘴唇完全遮住过。

2、用法不同。

当介词宾语为一件较小的覆盖物(如:cloth, book)时,一般要用with,因为此时往往用“人”作为行为施动者。例如：

The table was covered with a table cloth (by me).(我在)桌上盖着一块桌布。

Answer 2

be covered with与 be covered by 这两个词语都有“由.覆盖”之意
介词with用于主动或被动语态均可,指“用.覆盖/掩盖”,表状态
介词by用于被动语态,引出动作的逻辑主语,表动作不可通用.