Has, had structure

[Nageen]

Please explain why a sentences contains Has , have or had both in a sentence
e.g.
She has always had their strong backing.
He feels that his father has had a very profound affect on his personality.

Please explain that what is this structure and how can I use it in my own sentences.

[Nageen]

Isn't my question worth answering?

[Sajan]

It's Present Perfect Tense. "Has" is an auxiliary verb in these sentences and "had" - notional. They just happened to coincide here. =)
Compare:
1) to have breakfast
2) to do

Present Perfect: 1) I have just had my breakfast. 2) I have done it.
Past Perfect: 1) When we came, they had already had breakfast. 2) When we came, they had already done it.

[S. Becker]

This is the present perfect tense and is used to speak about something that begun and finished before now - a recent event.

Such as:
She has had a bad day.
I have had a bad meal.
They have had a wonderful holiday.
We have had a sandwich.

Hope this helps...

[Nageen]

Thnx.