Have bought/ bought, have visited/visited...

[subhajit123]

Hi everyone, are these sentences all grammatically correct? And what do they mean?
1- I have bought/bought a car this week.
2- I have seen/saw him this morning.
3- I have visited/visited my uncle's house today.

 

[Rover_KE]

They are all grammatically correct.

What do you want them to mean?

 

[subhajit123]

They are all grammatically correct.

What do you want them to mean?

What's the difference between 'I've seen him this morning' and 'I saw him this morning'?And what's the difference between "I've visited my uncle's house today' and 'I visited my uncle's house today'?