2. We use SINCE and FOR with the present
perfect
• Since
• Used for the event appeared in the past and is still on
going (specific) .
• For Example.
• I've lived here since March.
- I've been here since 9.00 this morning.
3. Time clauses
• I've studied English since I was at
university.
• (I have/I've) studied English since I
started in a secondary school.
4. For
• Continued to act in the past (unspecified)
• For Example
• (I have/I've) lived here for 9 months .
• (I have/I've) lived in Hong Kong for
twenty years.
• (He has/He's) worked for Microsoft for
two years.
5. Exercise
• 1.I haven't worked _____ a month.
• A. since
• B.For
• 2. They have been ill _____ Monday.
• A. Since
• B. For
6. Exercise
• 3. We've been friends with Fred _____
decades.
• A. since
• B. for
• 4. We've lived here _____ seventeen
years.
• A. since
• B. for
7. Exercise
• 5.My boss has been away _____ half a
day only.
• A. since
• B. For
• 6. I haven't slept _____ 48 hours.
• A. since
• B. for
8. Exercise
• 7. We have received no news _____ 5:30
pm.
• A. since
• B. for
• 8. We haven't seen Mary _____ the party.
• A. since
• B. for
9. Exercise
• 9.You haven't smoked _____ two months.
• A. since
• B. for
• 10. Mandy has been ill _____ Monday.
• A. since
• B. for
10. • Finally . I hope you enjoy and understand
every thing .
