Since The Implementation Of The Clean Air Act, The Concentrations Of All Major Air Pollutants Have Decreased. True Or False?

The meaning of since is from a definite past time until now. How to use since in a sentence. We use since to refer back to a previous point in time.

We use since as a preposition with a date, a time or a noun phrase:. Since we last met, important things have happened. Since you have no money, you can't come.

Definition of since preposition in oxford advanced learner's dictionary. See examples of since used in a sentence. You use since when you are mentioning a time or event in the past and indicating that a situation has continued from then until now.

He has been a member of parliament since 2007. I've been busy since i arrived. Since you've been here awhile, you might as well stay.

The word since very often appears with a. • don’t use since with a period of time. He has been living in england since 12 years.

• you use the present perfect before since: I have liked him since we first met. Apr 2, 2025when its part of speech is a preposition, “since” indicates the starting point of a time period (e.g., “i’ve been here since midday”—where the period of time is from midday up to now).

Jun 29, 2023in the sense of time, since is usually used with the perfect aspect. I 've been waiting here since ten o'clock. The school has been open since 2002.

It was only five days since they had met.