Tagalog question: may/meron vs magka-/magkaroon

Can you give me a simple sample sentence where I must use magka-/magkaroon (any aspect), and cannot use may/meron?

janahfacal.. wrote:

Humanap ng magandang trabaho upang magkaroon ng magandang kinabukasan.
To have a good future, one should look for a good or decent job.

Good example - thanks!

Examples of sentences where you can't swap may/meron with magka-/magkaroon:

Magkasama ba kayo? - Were you together?

Gusto ko magkaroon ng computer. - I want to have a computer.

If you try and swap it, it'll be grammatically incorrect, unnatural or even change the meaning.

May kasama ba kayo? - "Do you have someone with you?"

Meron kasama ba kayo? - Grammatically incorrect and just nonsensical.

Gusto ko may computer. - I want for a computer to be there.

Gusto ko meron computer. Grammatically incorrect and just nonsensical.

ikaymoreno wrote:

Magkasama ba kayo?

Is this really a magka- verb, or just a plain mag verb? I would have guessed you meant nagkasama rather than magkasama...

wrote:

Meron kasama ba kayo?

I'm not asking if may can be swapped with meron, but isn't this ok:

Meron ba kayong kasama?

leosmith wrote:

ikaymoreno wrote:

Magkasama ba kayo?

Is this really a magka- verb, or just a plain mag verb? I would have guessed you meant nagkasama rather than magkasama...

wrote:

Meron kasama ba kayo?

I'm not asking if may can be swapped with meron, but isn't this ok:
Meron ba kayong kasama?

Nagkasama is different from magkasama.

Magkasama ba kayo?

Are you together?

Were you together?

Nagkasama ba kayo?

Have you been together?

As for "Meron ba kayong kasama?", that works. :) Although since it's a mouthful, a native speaker is more likely to say: May kasama kayo? or May kasama ba kayo?