1) since +过去一个时间点 。
I have been here since 1989.
2) since +一段时间+ ago
I have been here since five months ago.
3) since +从句
Great changes have taken place since you left.
Considerable time has elapsed since we have been here.
4) It is +一段时间+ since从句
It is two years since I became a postgraduate student.
国内英语资讯:Plan adopted to promote integration of military, civilian standards
Hell's bells?
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国内英语资讯:Chinese premier urges pragmatic cooperation for common prosperity
如何在职场的宫斗戏中存活
星巴克咖啡要额外征收5便士的税?原因震惊到我了
厉害了人工智能!看眼睛就能判断性格
特朗普有意终结生在美国即为公民的政策
小测验 — 与笑话有关的英语表达
全球40万研究人员在虚假科学期刊上发表文章
吃瓜群众必备:“站队”用英语怎么说?
国内英语资讯:China, Slovakia agree to enhance cooperation on regional interconnectivity
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美驻英使馆搬家 拍卖1200卷厕纸
国内英语资讯:China refutes U.S. allegation on intellectual property issues
积极的心态是通往成功的关键
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国内英语资讯:Xi sends condolences to Pakistani president over deadly terrorist attack
国内英语资讯:China Focus: A small citys rise to prosperity
国内英语资讯:Across China: Tech-loaded greenhouses in Gobi boost profit for farmers
怎样做才能吃不胖?
国内英语资讯:Feature: Chinese firm helps Kenyans livestream World Cup matches via smart phone App
国内英语资讯:China vows to consolidate political foundation for development of ties with Czech Republic
国内英语资讯:China believes Pakistan can overcome temporary financial difficulties: FM spokesperson
国内英语资讯:China refutes U.S. criticism on unfair trade
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商务部发表声明(双语全文)
研究发现 加州红酒放射性水平有所上升
国内英语资讯:Economic Watch: Trade tension hurts U.S. consumers, say firms
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