SINCE or FOR

1

100

5 minutes

FOR

e.g : She has gone out for 5 minutes

200

November

SINCE

e.g : I have studied Chinese since November

300

several months

FOR

e.g : We have known each other for several months

400

the last year

FOR

e.g : I have gained a lot of weight for the last year

500

a century

FOR

e.g : Cars have been used for over a century

2

100

1983

SINCE

e.g : We have lived in this country since 1983 

200

a day

FOR

e.g : We haven't talked to each other for a day

300

ages

FOR

e.g : I haven't eaten fast food for ages

400

his accident

SINCE

e.g : He has been in hospital since his accident

500

all his life

(FOR)

e.g : He has lived here all his life

3

100

48 hours

FOR

e.g : I haven't had anything to eat for 48 hours

200

6 o'clock

SINCE

e.g : He has been in that room since 6 o'clock

300

last month

SINCE

e.g : They have built the house since last month

400

She left school

SINCE

e.g : She hasn't found a job since she left school

500

I was a child

SINCE

e.g : I have wanted to become a pilot since I was a child