havebeendone

have been done是什么时态

have been done是现在完成时的被动结构。其被动语态完整结构：肯定式为“have/has+been+done”；否定式为“have/has+no......

2026-01-22 1
have been done什么意思（have been done）

1、have been done 是现在完成时中的被动结构。 2、其被动语态完整结构：肯定式为：have/ has +been +done。 3、否定式为......

2026-01-22 1

have been done是什么时态