英语短语not exactly 和not really 究竟怎么用啊?我总是分不清楚这两个短语.例子给的越多越详尽越好,

not exactly adv. 不完全, 不全是, 未必就例句:I'm not exactly sure what to buy Gill for her birthday, although I do have something in mind. 虽然我心里确实想过买什么，但我还确定不了为吉尔的生日买些什么。You're not exactly sylphlike, are you?' she said to her fat friend. ｀你并不算苗条，对吧?＇她对她那胖胖的朋友说。We're not exactly on intimate terms, but we see each other fairly often. 我们虽算不上关系密切，但还常见面。not really 事实上不是例句:I'm afraid that's not really possible. 恐怕这确实不行。Oh, not really. 哦，不会吧。I am not really familiar with the local laws. 实际上我对当地的法律并不熟。

I'm not exactly sure what to buy Gill for her birthday,although I do have something in mind.虽然我心里确实想过买什么,但我还确定不了为吉尔的生日买些什么.You're not exactly sylphlike,are you?' she said to her fat friend.｀你并不算苗条,对吧?＇她对她那胖胖的朋友说.We're not exactly on intimate terms,but we see each other fairly often.我们虽算不上关系密切,但还常见面.not really 事实上不是例句:I'm afraid that's not really possible.恐怕这确实不行.Oh,not really.