I haven't heard from him since Tom telephoned.
自从汤姆打电话来以后，我再没有听到他的消息。
It is 3 weeks since Tom got engaged to Mary.
汤姆和玛丽订婚三周了。
It is two months since Tom smoked a cigarette.
汤姆上次抽烟到现在已经两个月了。
It is two months since Tom has smoked a cigarette.
汤姆最后一次抽烟到现在已有两个月了。
Since Tom has been calling the shots, the work has doubled.
汤姆当上了主管后，工作量加大了一倍。
John said nothing can stop their meeting since Tom has came.
约翰说，既然汤姆已经来了，那么没有什么能阻止他们的会面。
John said that since Tom had come, there's nothing can stop them meet each other.
约翰说，既然汤姆已经来了，那么没有什么能阻止他们的会面。
John said, "Since Tom has been here, there is nothing can stop them from meeting."
约翰说，既然汤姆已经来了，那么没有什么能阻止他们的会面。
I have lost contact with Tom since leaving university.
自从离开大学后我就和汤姆失去了联系。
Tom told me he had stayed here since he came back.
汤姆告诉我自从他回来就呆在这儿了。
I haven't seen Tom since last year.
我从去年就没有见过汤姆。
"Tom lived with us since he was twelve years old," Michael said.
“汤姆十二岁的时候就和我们住在一起了，”迈克尔说。
His father had died five years before and since then Tom had lived alone.
他父亲五年前就已去世，从那以后汤姆独自生活。
I haven't heard from Tom since May.
自从五月份以来我就没有收到汤姆的信。
Tom has taught English here since he graduated from Oxford University.
汤姆从牛津大学毕业后就一直在这里教英语。
Tom has felt blue ever since his friend left for Beijing.
自从他的朋友到北京去以后，汤姆就一直闷闷不乐。
Tom has collected quite a few stamps since he came to China.
自从汤姆到中国以来收集了相当多的中国邮票。
Tom has sprouted a beard since we saw him last.
子了，我们上次见到他时还没长呢。
Tom said that it was years since they had enjoyed ourself.
汤姆说三年来他们没有这样快乐过。
Tom said that it was years since they had enjoyed ourself.
汤姆说三年来他们没有这样快乐过。
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