Since vs. For with Present Perfect

Since is used with the present perfect to express that something has happened since a point in time.
I've lived here since 1999.
She's been working hard since two this afternoon.

For is used with the present perfect to express that something has happened for a period of time.
I've worked at this job for 10 years.
Peter's been playing tennis for two hours.

"at your English Tips 4"

His
The possessive pronoun form of he is "his" - both when followed by a noun and by itself - It is his book. The book is his.

I think that's his car.

That house over there is his.

 to mind
The verb "mind" is followed by the gerund -( ing) - form of the verb.

He doesn't mind working late.

Would you mind giving me a hand?

First Conditional
In the first conditional, use the simple present in the if clause and the future with will in the result clause.

If you finish that book, we'll get you a new one.

She'll move to Oregon if she gets a new job.

Present Perfect with "For"
Use the present perfect with the time expression "for" to express a period of time up to the present moment.

She's played tennis for ten years.

I've known him for many years.

Had to -  is the past of both "have to" and "must".

John had to get up early to catch the train last week.

He said he had to leave.