It's ok to say: My father starts work ?
i think it's better say My father start to work or my father start working, what of them it's ok? please!

Question

Answer

If you mean that your father recently got a job, you can say "My father started working" or "My father started to work".

If you say "My father starts work" it usually refers to starting at a specific time, such as "My father starts work at 9"

I hope this helps :)

Answer

If your father just started (began) a new job:

My father has started working.
My father has started working again.

If he got the new job but didn't start it yet:

My father starts his new job on Monday.
My father will start his new job on Monday.
My father will start working again on Monday.

Hope this helps! :)

Answer

My father starts working at 8pm.

My father starts to work at 8pm.