中國(guó)人常說(shuō)“一諾千金”，意思是“A promise is weightier than one thousand bars of gold”。做出承諾就應(yīng)該去兌現(xiàn)，不應(yīng)該“出爾反爾”。

“出爾反爾”，漢語(yǔ)成語(yǔ)，多指自己說(shuō)了或做了，后來(lái)又反悔。比喻言行自相矛盾，反復(fù)無(wú)常，說(shuō)話不算數(shù)（promise and then deny in succession;be inconsistent in one's words）?？梢苑g為“go back on one's word”或“ renege on one's word”，表示“to break a promise that one has made；to not do something one said one would do”。

例句：

你答應(yīng)支持我們的項(xiàng)目，現(xiàn)在卻出爾反爾！
You made a commitment to support our project, and now you've gone back on your word!

我生氣是因?yàn)槟愠鰻柗礌枺?br>I am mad at you because you reneged on your promise!

我不想出爾反爾，但是我不會(huì)付你100美元的。
I hate to go back on my word, but I won't pay you $100.

Editor: Jade