beg off

v. 恳求免除(某种义务)

例句与用法：

He promised to go with us, but he has since begged off.

他本来答应跟我们同往，但后来一直借故推辞了。

Father told Tom to rake the yard, but Tom tried to beg off.

父亲要求汤姆清扫庭院，但他却要求放了他。

词形变化：

动词过去式: begged | 动词过去分词: begged | 动词现在分词: begging | 动词第三人称单数: begs |

详细释义：

请求免除

She promised to come and help but has since begged off.

她答应来帮忙的, 但后来请求原谅不能来。