2017年9月21日 · We use the Past tense after “since” when we refer to a point in time in the past, and we use the Present Perfect after “since” when we refer to a period of time from the past until the present. We could rewrite the above two examples to refer to points in time (and use the Past tense after “since”) as follows: The department has ...

Since - English Grammar Today - a reference to written and spoken English grammar and usage - Cambridge Dictionary

Since vs. for: Since and for both express duration up to a point in the present, but we use them differently.: We use since + the starting point of the activity: We have lived in this house since we got married. I've been waiting here since 9 o'clock.: We use for + a time period: We have lived in this house for thirty years. I've been waiting here for three hours.

To summarize, use for when discussing the length of time a situation lasts, without a specific start point.Since is your go-to term for specifying the beginning of a continuous action or event. While for could stand for a period that extends into the past or future, since anchors an occurrence to a particular moment and carries it through to the present. . Understanding these nuances ensures ...

We often use for and since when talking about time.. for + period: a "period" is a duration of time - five minutes, two weeks, six years.For means "from the beginning of the period to the end of the period".. since + point: a "point" is a precise moment in time - 9 o'clock, 1st January, Monday.Since means "from a point in the past until now".. Look at these examples:

When since is used as a conjunction, it joins a main clause and a subordinate clause. Since comes at the beginning of the subordinate clause. Mike has been promoted twice since he joined the company. (main clause = ‘Mike has been promoted twice’; subordinate clause = ‘he joined the company’) I’ve been very busy since I started my new job.

2025年1月1日 · The use of SINCE. Since gives the starting point of actions, events or states. It refers to when things began. Since + a point in time (in the past), until now. I've been waiting since 7 o'clock. I have known him since January. With since we use the present perfect tense or the past perfect tense. I have been here since 5 o'clock and I am ...

Difference between Since and For. We use both since and for to express a duration of time up to a point in the present, but they have some differences.. As I wrote above, since is used when talking about a point in time or the beginning of a state or activity (since 1942/since his accident), in the present perfect or present perfect continuous state.The activity is still in process at the ...

Since and for used as prepositions. Model 3. Since is used to situate an event in relation to a moment in time (yesterday), but for is used to relate the event to a period of time or duration (five days).The verb in the main clause is normally in the present-perfect tense.

This use of 'since' helps convey both duration and continuity of the action. Evaluate how the use of 'since' to express causation impacts the clarity of complex sentences. 'Since' serves not only as a temporal marker but also as a means to establish causation, which significantly enhances sentence clarity. For instance, in 'Since he studied ...