3. I have known her since January.
4. They have bought a new house since April.
5. We haven't seen each other for 10 years.
6. She has lived with her parents up to now.
7. How long has Mr Clark worked at the bank so far?
8. Tom and Joanna have gone to France since last summer.
Công thức:
(+) S + have/has + V-ed(V3) + ....
( - ) S + haven't/hasn't + V-ed(V3) + ....
(?) Have/Has + S + V-ed(V3) + .....?
- Yes,S + have/has
- No, S + haven't/ hasn't