达人们帮我看看这句话有什么问题没,是否符合英语的表达习惯,I promised you a purple case of ipho_英语解答

达人们帮我看看这句话有什么问题没,是否符合英语的表达习惯,
I promised you a purple case of iphone4 that I have already bought in yesterday.It is a secret that I want you keeping.The case is a present that you don't need paying me back for it.happer new year!

人气：242 ℃　时间：2020-06-03 11:37:49

解答

有点问题,i promise you .bought yesterday ..paying it back for me .happy new year.谢谢，promise是过去许诺的，为何不用过去时？其他纠正没有疑问。