All about 'Since'
理解语法是理解一门语言的关键。
英语语法小贴士尽在Gymglish在线英语课程。
测试你的英语
免费试用, 无购买义务
在 App Store、Play Store 和 Trustpilot 上排名 4,7
超过8,000,000名全球用户。
All about 'Since'
SINCE 后面一般为日期或者动作开始的时间:
since 1933 自1933年起
since this morning 今天早上起
since quarter past five 自五点一刻起
Since 后面不能跟时间段(三个月，一周，等等):
How long have you been working here?你在这儿工作已经多久了？
- (I've been working here) Since 1999. (我在这儿工作)自1999年起。
- (I've been working here) For 10 years.(我在这儿工作)已经10年了。
- I started 10 years ago.我从10年前开始。
- (I've been working here) Since 1999. (我在这儿工作)自1999年起。
- (I've been working here) For 10 years.(我在这儿工作)已经10年了。
- I started 10 years ago.我从10年前开始。
Since 也可用作一个连词:
Since Horatio moved to America, he eats a lot more hot-dogs. 自从霍雷肖搬去美国后，他吃更多的热狗。
It's been four years since I last saw you. 自从我上次见你，已经过去四年了。
Since 也可以为副词:
Susie graduated from Oxford several years ago and has been satisfying all of her employers ever since. 苏西数年前从牛津毕业，然后她的每个雇佣者都对她很满意。
最后，since还能表达'as', 'because'或者'given that'因为的含义。当用作此意时，它表示为做某事的理由或者动机。
Since we're going out, why don't we post that letter?既然我们要出去，为什么我们不寄了那封信呢？
练习 1
Horatio has been mixing herbs and plants over 50 years, the middle of the 20th century.
Horatio has been mixing herbs and plants for 1 over 50 years, since 2 the middle of the 20th century.
1 for: As a preposition of time, 'for' indicates how long an action has lasted. In this case, 'for' tells us 'how long' Horatio has been mixing plants and herbs.
1 since: 'Since' indicates when an action began. We cannot use it here to indicate 'how long' Horatio has been mixing plants and herbs.
2 since: 'Since' indicates when an action began. It is often directly followed by a date or a time period. It is the best choice here.
2 for: As a preposition of time, 'for' indicates how long an action has lasted, not when it began!
练习 2
Bruno has been in love with odors he was a little boy. over 40 years, perfumes have been Bruno's passion.
Bruno has been in love with odors since 1 he was a little boy. For 2 over 40 years, perfumes have been Bruno's passion.
1 since: 'Since' indicates when an action began. It is often followed directly by a date or time (since 1953, since 9 o'clock) or by a clause which expresses the origin of an action (since he learned to read, since she married).
1 for: As a preposition of time, 'for' indicates how long an action has lasted. It can't be used in this sentence.
2 For: The preposition 'for' can be used to indicate a general period of time that is finished or still continuing, or the duration which something lasted. Example: 'For years, for months, for weeks,' etc.
2 Since: Since' is grammatically incorrect here. 'Since' isn't used to describe the duration of time, but rather to indicate when an action began.
练习 3
The building has been much more quiet Harold Warbuckle left. He had been yelling and screaming hours, so it was a relief he finally exited the boardroom.
The building has been much more quiet since 1 Harold Warbuckle left. He had been yelling and screaming for 2 hours, so it was a relief when 3 he finally exited the boardroom.
1 since: 'Since' is the best choice here because it indicates 'when' or 'at what moment' the building became more quiet. As a preposition of time, 'since' is often followed by a precise date, or an action which corresponds to a precise moment in time.
1 for: As a preposition of time, 'for' is usually used to describe the duration of an action. In this case, it does not fit the construction because it cannot tell us when an action began, or its starting point.
1 ago: The term 'ago' is used to situate an action in the past; it cannot be used to describe the starting point of an action which continues into the present.
1 until: 'Until' is used to indicate the time or moment when an action will finish. It can't be used to describe the starting point of an action which continues into the present.
2 for: The preposition 'for' can be used to indicate the duration of an action or event. Example: I have been living in France 'for' around five years. In this sentence, 'for' tells us 'how long' Harold has been yelling: hours. Note that 'for' is frequently used with a verb in the present perfect tense.
2 since: This is grammatically incorrect. We use the preposition 'since' to indicate the starting point of an action or event. Example: I have been living in France 'since' 2002, or 'since last year, I have gained 15 pounds'. 'Since' is often directly followed by a precise date or moment in time. Example: Since 1942, since January, since last week.
2 until: 'Until' is used to indicate the time or moment when an action will finish. It can't be used to describe duration of an action.
2 ago: The term 'ago' is used to situate an action in the past; it cannot be used to describe the starting point of an action which continues into the present.
3 when: We use the relative pronoun 'when' to refer to periods or moments of time. 'When' describes 'the moment that Harold left the building'.
3 where: In English, 'where' is never used in the relative sense to refer to a period of time. 'Where' is used to refer to location: Meet me at the place WHERE I first met you.
3 what: 'What' is used to replace general topics and subjects. We cannot use it here to refer to a moment in time.
练习 4
Luna DeLune has been interviewing job applicants 8:30 this morning. She's a little bit tired, but she must continue 5:00 this evening.
Luna DeLune has been interviewing job applicants since 1 8:30 this morning. She's a little bit tired, but she must continue until 2 5:00 this evening.
1 since: 'Since' is used to describe the point in time at which an action began. In this context, 'since' indicates the point in time 'when' or 'at what time' Luna began interviewing. 'Since' is often used with a verb in the present perfect form, and directly followed by a precise date or a precise moment in time. Example: Since 1942, since January, since last week.
1 for: 'For' does not make sense here. We use 'for' to express how long an action has lasted, in this case we want to know when Luna started her interviews.
1 during: 'During', similar to the terms 'while' and 'throughout', is used to link an action with an event, but it cannot be used to indicate the starting point of an action. Furthermore, 'during' is never used with the present perfect tense, which describes an action which began in the past and continues into the present.
1 ago: 'Ago' indicates how much time has passed since the action started, for example: I started going to yoga classes 3 years ago, I can now touch my toes.
2 until: 'Until' is used to indicate the time or moment when an action will finish. The term is often followed by a precise moment in time or an action which corresponds to a precise moment in time. In this sentence, 'until' tells us at what time Luna's interviews will stop.
2 since: 'Since' indicates the time at which an action began. In this case we want to know about the time that the action will finish.
2 at: 'She must continue at 5:00' indicates that Luna's interviews will 'recommence' or begin again at 5:00, which doesn't make sense given the context of the first sentence.
2 just at: 'She must continue just at 5:00' is grammatically incorrect. 'Just at 5:00' might indicate that an action will take place at precisely 5, however it cannot express when an action will finish, as the term 'until' does.
练习 5
the turn of the century, Delavigne has been making fine perfumes at affordable prices. As their popularity rises, the company will continue to be successful the next century.
Since 1 the turn of the century, Delavigne has been making fine perfumes at affordable prices. As their popularity rises, the company will continue to be successful until 2 the next century.
1 Since: In this phrase, 'since' indicates the time period when Delavigne began making fine perfumes. 'Since' is often used to describe the point in time at which an action began.
1 Until: 'Until' usually indicates the time an action will be finished, and we are trying to express when the action began.
2 until: 'Until' is the best choice here because it expresses how long Delavigne can continue to be a successful company.
2 since: 'Since' indicates how long an action has been going on. In this case we want to know how long Delavigne will continue to be successful, so we must use 'until' here.
让您的学习更上一层楼
仍然觉得“All about 'Since'”有困难？用Gymglish提升英语水平——立即试用我们的免费英语课程并接受免费水平评估吧！
他们的意见 :
您有什么避免在“All about 'Since'”上犯错的小贴士吗？那就分享给我们吧！
了解其他语法规则。进一步提高英语水平并试用Gymglish在线英语课程。
