1
I’m live in Barcelona.
I living in Barcelona.
I live in Barcelona.
I’m living in Barcelona.
The present simple uses the main verb without be: ‘I live in Barcelona.’ We normally use it for permanent situations.
The present continuous uses am/is/are + -ing: ‘I’m living in Barcelona.’ We use it here when the situation is temporary.
Do not use an -ing form without am/is/are, and do not use am/is/are before the base form of the main verb.
2
I can’t talk now because I work.
I can’t talk now because I’m working.
Use the present continuous for an action happening now: ‘I’m working’, ‘She’s having lunch’, ‘They’re watching TV’.
Use the present simple for habits and things that happen regularly: ‘I work from Monday to Friday.’
3
My brother work in a bank.
My brother works in a bank.
He doesn’t works at weekends.
He doesn’t work at weekends.
In affirmative present simple sentences, add -s or -es to the verb with he, she and it: ‘he works’, ‘she watches’, ‘it finishes’.
After does or doesn’t, use the verb without -s: ‘Does he work?’ ‘He doesn’t work.’
4
I have this watch since I was a kid.
I’ve had this watch since I was a kid.
Use the present perfect, not the present simple, for a situation that started in the past and is still true now: ‘I’ve had this watch since I was a kid.’