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Unit 1.2

For and Since with Present Perfect

Prepositions

Prepositions are small words that are related to another element in the sentence. They are essential because they provide additional details about the sentence by locating events, people, and objects in a place and time.

To locate an event in a time frame and add information about its duration, we use the prepositions for and since.

The prepositions for and since have the same general purpose but have a different connotation. With them we always use the present perfect of the verb, when referring to the present.

The structures are:
… + for + period of time + …
… + since + starting point + …

For

  • I have studied Dutch for 4 years.
  • I‘ve known her for ten years.
  • She has attended the Spanish course for three months.

Since

  • I have studied Dutch since 2011.
  • I‘ve known her since 2006.
  • She has attended the Spanish course since January.

We usually use for to express the period of time in which an event took place (2 years, 6 weeks, 10 days…). The event expressed with for is still effective in the present time of the conversation.

We usually use since to express the exact starting point of an event (last year, 1996, I arrived…).

For and since help to locate an event in a time frame and add information about its length. They are always used with the present perfect, when referring to the present.

  • For is used to express the length of a period that is still going on:
    … + for + period of time + …
  • Since is used to express the exact present or past starting point of an event:
    … + since + starting point + …

For example:
— “I‘ve been a fireman for 16 years.” = We use for because we are expressing the length of the action.
— “I’ve been a fireman since 2000.” = We use since because we are expressing the starting date of the action.

Let’s revise this content within the {Form} section. Take a look at the {Example} section that shows its use within a context.

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For and Since with Present Perfect Copyright © 2018 by books4languages. All Rights Reserved.