since years ago用于什么时态

since years ago用于什么时态 for yet ago before since分别用于什么时态 Mary ____ ____in China since three years ago .填什么 since two years ago与since two years的区别,分别用在什么时态? since ten years since ten years ago区别 since.ago能否用于现在完成时态 SINCE TWO YEARS AGO的同义句 since用于什么时态 since用于什么时态 I have known sandy since three years ago以 since three years ago ,提问 she's been swimming since she wassix years ago划线提问since she wassix years ago I .[not see]her since she.[leave] Beijng three years ago.的空中应填什么 He has never called on me since he_(move)toBeijing two years ago.由since得句子,有什么特点? many years ago用于什么时态置于句末时。翻译我们家几年前搬家。 She collected wine bottles since two years ago.(变为现在完成进行时) two years ago 不是表过去时吗?为什么可以与现在完成时连用?(since two years ago)而when就不可以? he worked here three years ago用since three years ago改写句子 When did you study in france?A,Two years ago B,Since two years ago