Polite request to sweetly ask something
Could
Could you please open the door?
Could you please turn off the AC?
Could you please bring lunch for me?
Could you please wait for me?
Could you please give me some water?
Could you please pass me the pen?
Could you please tell me your full address?
Could you please stop taking?
Could you please stop me at my home?
Yes. I sure. I will do it.
No. Sorry.
Another usage of could - Past ability
Can: ability - kaliyum, saathikum, seyyapatum
Could: Past ability - kalinu, saathichu, patu
I could sing very well last week.
They could complete the homework.
He could meet the deadline.
We could perform very well.
She could participate in many competitions.
We could speak confidently.
Last year we could buy a property.
Max could go for many international trips.
Mahatma Gandhi could lead the nation (He died, so could).
Task
Sundhar Pitchai could get first in the state in the 12th exam.
Sundhar Pitchai could work as a govt staff.
Sundhar Pitchai could study at IIT.
Sundhar Pitchai could start a company in India.
(Only talk about the abilities he can do. So study MBBS is wrong)
Gandhiji could lead the nation.
Gandhiji could be the leader of the nation.
He could win the hearts of the Kerala people.
Messi could conquer the minds of billions of people.
Couldn't.