Gdybym...łbyś

In English when we say:

If I sung this song, you would cry
and
I had sung this song you would have cried

But can't we say:
Gdybym śpiewał, płakałbyś ( If I sung this song, you would cry)
and
Gdybym zaśpiewałbym, zapłakałbyś (I had sung this song you would have cried)

I have the impression that in Polish we use only one translation for both of them.
Which one?

Thanks for your answers.

Wrong.
Correct form:
Gdybym zaśpiewał, zapłakałbyś

maybe a little inversion: Had I ...

Sorry, I just forgot the "IF" I had sung...and added a "BYM" by accident (This happens when watching tv in the same time as writing...)

But please answer my question or explain if you can:
I have the impression that in Polish we use only one translation for both of them.
Which one?

Gdybym śpiewał, płakałbyś ( If I sung this song, you would cry)
and
Gdybym zaśpiewał, zapłakałbyś (If I had sung this song you would have cried)

Thanks for your answers.

you can use them both but more common is the second version.I don't know how to explain why.They have also slightly different meaning.

Two things have been confounded here: the Polish imperfective versus imperfective aspect, and the English "real" (2nd conditional) versus "unreal" (3rd conditional) past. While both sentences above should be translated using the former or the latter depending on the context, the one which in Polish precisely matched the 3rd conditional in English would be:

Gdybym był za/śpiewał, byłabyś za/płakała.

This is called czas zaprzeszły (the Polish equivalent of the Past Perfect, and is no longer in modern use. Still, if you did use use it, no one could challenge you've made a mistake! One could only be surprised how poetic you are and how charming (maybe a little old-fashioned, too) your way of expressing things is!

Kenji75018

the 2nd form (gdybym zaspiewal, zaplakalbys) sounds 'more natural' for me (as for native)

@Ziemowit
well... nicely done :)

Can you make a construction with jeśli?

Jeślibym zaśpiewał, zaplakałbyś

Hello to you all and thank you for all your answers.

So in this case how can we make the difference between those two sentences?

The best would be to translate them.
Can someone translate those two sentences in polish?

If I sung this song, you would cry
If I had sung this song you would have cried

Like this, we'll see the difference.

As far as I know there are not any exact translations that can differentiate these two sentences.

There's no need to make such a difference in Polish. Languages make differences in different places and there's no need for them to match up.

All languages have different structures, that's why you sometimes can't compare the grammatical structures.

The same situation as with a, an and the.

Polish does not recognize any difference between:
a) I see a car
b) I see the car

or...

a) If I sung this song, you would cry
b) If I had sung this song you would have cried

-----------------------------

In English you don't have to care about the difference between:
a) Na ulicy widziałem Cię. (impf.)
b) Na ulicy zobaczyłem Cię (perf.)

So do you mean that Polish is easy?

:-)

I think no one means that. But a few things are actually easier than for a Polish person to learn in English.

I was joking