be on at

短语

词形变化

is on at 三单 being on at 现在分词 was on at 过去式 been on at 过去式 been on at 过去分词

释义与例句

v.
  1. 1.

    To complain to (someone).

    美国 非正式

    They've been on at us about cleaning the backroom for months.