FOR and SINCE

PRESENT PERFECT

start

Presentation

for

We use FOR in the Present Perfect, to define a period of time before now by considering its duration.

for a week for a year for a season

For + a period of time for 5 minutes for an hour for a day

for

I have worked here for five years.She has lived here for twenty years. They have been married for three months.

since

We use SINCE in the Present Perfect by considering its starting point.

SINCE + a starting point since this morning since last week since yesterday

since I was a child since Wednesday since 2 o'clock

since

She has lived here since 1980. We have taught at this school since 1965. They have been married since March 2nd.

I've worked in Civil Engineering ______ 1994. I've worked in Civil Engineering ______ 27 years. I've been awake ______ 10 hours. I've been awake ______ 6am I haven't eaten ______ three hours. I haven't eaten ______ 1pm. I've had classes ______ August 2nd. I've had classes ______ twelve days.

for or since

practice

Thanksmiss morales!