Sunt fericit/fericită.

I am happy/ecstatic.

Sunt inginer

I am an engineer

Ești obosită?

You are tired?(f)

Nu este ocupat!

He is not busy! (m)

Am o soțiă frumoasa.

I have a beautiful wife.

Ai o sora?

Do you have a sister?

Common usage is to say you need something, or that you need/want to do something. For more examples see the simple past

A avea nevoie

To need something

A avea chef

To feel like having/doing something.

Dacă ai nevoie de … mergi la …

If you have need of … (you) go to …

Dacă ai nevoie de mâncare mergi la magazin.

If you have need of food (you) go to shop.

Dacă ai chef de … mergi la …

If you have need of … (you) go to …

Dacă ai chef de o bere mergi la terasă.

If you have need of a beer (you) go to terrace.