That's(very} big of you. 用:可用it代替that, you可换为him, her, them等其他人称代词。 意:(多用来讽刺)你可真大方! 例,It's big of him to harre lent me $5, you know, it might just have sacred my life! 他真大方,借了5美元给我,知道吗,这5美元可能救了我的命! A: You can use my car this evening! 今晚你可以用我的车。 B: Thank you, that's very big of yau. 谢谢,你可真大方!