since two years ago与since two years的区别,分别用在什么时态?

since two years ago与since two years的区别,分别用在什么时态? SINCE TWO YEARS AGO的同义句 When did you study in france?A,Two years ago B,Since two years ago 为什么是since two years ago 而不是for two years ago 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? the actor and director_______(move) abroad since two years ago. The story factory___(open)since two years ago. Mr green has ()us English since two years ago mary has got married since two years ago改错 since two years ago 它是一个时间点 还是一个时间段? Dave __ (learn) Chinese since two years ago the swimming club opened two years ago（用since two years ago 改写)the swimming club ____ ____ ____ since two years ago. How long have you lived in Suzhou?A.Since two years ago B.For two years ago C.Two years ago His father died two years ago同义句His father has been （　　　）since two years ago.说明为什么 mei lin has been a teacher ---.a.since two years b.since two years ago 为什么选b? years ago与before two years的区别. John joined the army two years ago等于___two years since he joined the army 下面几个句子的区别!1.It‘s two years since Jim Green came to China.2.Jim Green came to China for two years.3.Jim Green lived in China two years ago.4.Jim Green came to China since two years ago.第二句与第四句有什么区别呢？