Andy and I
have been bestfriends
since gradeschool.
=> As for subject verb agreement, when in doubt, change
Andy and I to
We; The pair
Andy and I act as a set: We are.
Andy and I
are upset. /
We are upset
Janice and Shiela
is fighting almost everyday.
Janice and Shiela
are fighting almost everyday.
I heard her sang once.
I heard her
sing once.
=> I heard he
DO something once (
Base form)
She is the best teacher for me. (OK)
She is the best teacher to me. (Not OK)
As for me, I think she is the best teacher. (OK)
To me, she is the best teacher. (OK)