I have bought the coat for 8 months.这句话对吗?我总觉得不对,感觉I have ha

I have bought the coat for 8 months.这句话对吗?我总觉得不对,感觉I have ha I have（ got） the coat for 8 weeks.got 换成 bought 行不行? You have the same coat ______ I bought for my brother.选哪个? I have already bought the book for about two years.这句话错在哪里? I () these books for three years.A,bought B,have bought C,ha I have bought the bike和I have bought the bike for two years, I have joined the youth volunteers for five years.这句话对吗? I have been ill for the last week.这句话对吗 "I wish I will have a coat"这句话对不对? We have double checked the shipment这句语法对吗?我怎么觉得不对啊? I have studied English for three months. I have bought the new mp3 for three days.这句话有什么语病哪?（单句改错）