left out and leave

[rayz26]

how to use left and leave??
ex. for this conversation

A: hi i just reached home.
B: are u happy now?
A: yeah I'm happy with my friends here.
B: I'm happy for u, but u shouldn't left your mother there alone.

should i use leave or leaving, or left ??

thanks and regards

[philadelphia]

You should not leave your mother there alone.

Leave because of it is necessary to use an infinitive after a modal.

[rayz26]

if so, when must use left??

give me few examples... thank you for helping me...

[philadelphia]

Welcome to the forums by the by

Leave - simple present
Left - simple past
Left - participle past
Leaving - participle present

I leave my mother now
I left my mother yesterday.
I had left my mother - a moment in the past.


Not a teacher at all