The coat bought last week is too big for me .I'd like to change it for a small one对吗?

is this coat the one you bought last week? 为啥用THE ONE 而不是which,that? The coat bought last week is too big for me .I'd like to change it for a _smaller____one对吗? The coat bought last week is too big for me .这句话的有语法错误吗?还是应该改成The coat I bought last week is too big for me .或者The coat was bought last week is too big for me .为什么第二种改法的which不能省略呢？第 The coat bought last week is too big for me .I'd like to change it for a small one对吗? The coat was bought in Shanghai.是什么时态, She bought the coat on her( )四十birthddy..急用 Tom bought the coat yesterday.同义句转换tom __ __ the coat __ __ __ he bought the house last year翻译 i bought a coat last month in paris 这句话对的错的 99.—I bought the coat for 210 yuan last week.-- It’s on sale today for 199 yuan . You should have waited.-- Oh , really? But how ________ I know?A.would B.did C.can D.do This is the shop where/which I bought the coat yesterday哪一个,为什么 This morning,I went to the shop and change the coat I bought.改错, this the coat he is which bought yesterday怎么组成一句话? He bought the same coat that i was wearing yesterday?为什么不能用that? 介词填空 什么the money ,she bought a new coat 什么her father the coat l bought week is too big for me翻译给个好评速度… the coat I bought yesterday is /was expensive?是填is 还是was I have（ got） the coat for 8 weeks.got 换成 bought 行不行?