什么 建于 什么时间 英文翻译

……be built in ……

build 或 construct都可以。

比如 这座大厦建于2000年1月1日。

This mansion was built/constructed on January 1st, 2000.

肯定是过去式吧？

个人意见如下：

was built in

finished the construction in

was in operation in

xx（建筑物） was built up in xx(年代）/ on xx（日期）/ during xx（时期，时间段）
或者：xx（建筑物）'s construction was completed in xx / on xx / during xx

something was built in

something was built in some time