请教I would like to have done sth=I regret now that I didn't o

We'd like to have gone on holiday but we didn't have enough money.我们很乐意去度假的,可是我们（那时）没有足够的钱.表示对过去某事因其他原因导致的未发生而遗憾的一种情感.I would like to have done sth 我本打算做某事 I regret now that I didn't or couldn't do sth 我现在很遗憾我不能或不可能做某事了 这就反过来了,把遗憾的情感置后了.他后悔本来应该做的,却没有去做.