假如某人 不惜所有地帮你,即便把最后一点家当都给你也在所不惜,就能用短语 give the shirt off their back 来描述这个人的行为,意思是 倾囊相助,尽力帮忙。
例句
Jack1 is such a nice guy he would give his shirt off his back to help you out.
杰克真是个大好人,他会竭尽所能地助你。
Id give you the shirt off my back to help you pay for your wedding.
为了资帮你支付结婚典礼的成本,我会倾囊相助。
Im afraid even giving me your shirt off your back will not help me pay for my new house. But thanks for the offer.
即便你倾囊相助,恐怕都没办法帮我支付新房屋的钱。但还是要感谢你的好意。