C Present perfect simple+ for and since 


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C Present perfect simple+ for and since

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A The simple past

We normally use the simple past to talk about actions that took place at a time that is separated from the present. It is used with expressions like yesterday, on Monday, last week, in 1989, at 6.30, How long ago…?, etc.:

Yesterday GKN launched a takeover bid for Westland.

He did his MBA at Cranfield in 1991.

We can use the simple past and for to talk about something that happened during a period that has now finished:

I lived in Singapore for three years; then I came back to England.

 

B The present perfect

The present perfect is used to talk about the present result of past actions and recent events, and is often used with words like ever, never, just, already, yet, and phrases of unfinished time such as so far:

British Telecom has cut the price of peak rate phone calls by 20%.

Have you ever triedSwiss wine?

We have spoken to each other on phone, but we have never met.

Don’t worry about the order from Siemens. I have already dealt with it.

I’m afraid I haven’t done that sales forecast yet. I’ll do it tomorrow.

The film was released two weeks ago and so far it has taken$45m.

The present perfect can be used with for and since and stative verbs, or to refer to actions that are seen as long term or permanent. We use for to talk about the duration of a period of time and since to talk about the stating point of an action or state:

I have been with the company since 2004.

I have lived here for 20 years.

It is also used in the negative with for and since to talk about the last time something took place:

Ihaven’t seen her sinceMonday.

I haven’t seen her for three days.

It is used with since to talk about completed actions:

Our market share has increased by 11% since we started advertising on TV.



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