write it off 不要放在心上了。 If you write someone or something off, you decide that they are unimportant or useless and that they are not worth further serious attention. 认为....不重要或者无用，不值得再去注意或者在意 write意为“写”，off是“抹掉”，把写的东西抹掉，引申为“不要放在心上”。当你的朋友因为不开心的事而烦恼时，可以用这句话来安慰他。 Lily: I made a mistake over the bill yesterday. I should take the blame. 莉莉：我昨天把账算错了，我要为过失承担责任。 Jane: Write it off. 简：不要放在心上了。