Please could someone explain if all the sentences below convey almost the same meaning, i.e., ´When Ali comes, we will go to the market´

1) ´Ali gelince, biz çarşıya gidiceğiz´
2) ´Ali´nin geldığı zaman, çarşıya gidiceğiz´
3) ´Ali geldiğinde, çarşıya gidiceğiz´

Thank you.

Tazx1

In place of number 1 you can also use:

4. Ali gelir gelmez biz pazara gideceğiz.

This means "when" as in "immediately after".

The second Ali comes we will go to the market.

Or could be ´Ali gelip pazara gidecegiz´after Ali arrives we´ll go to the market, am I right?

The ´gelir gelmez´ construction means ´as soon as´.
So like Marion says-´as soon as Ali comes ........´

Thanks guys so we can´t use Ali gelip Pazar´a gidecegiz´?

Not really.

Normally the person who is doing both the -ip verb and the second verb is the same person.

e.g. Ali koşup vapura bindi.

Oh ok thanks guys