"To jest jajko."

Translation: This is an egg.

[Nepenti]

Are we using "to jest" (rather than "ten jest" or "ta jest" because jajko is neuter? or is the form always "to jest"?

[MagicOfLA]

To jest = "it is" or "this is". Always. There is of course also "ten jest", but it translates more or less to "this one is".

[RonShamell]

So "ta jest" means "this one is..." then followed by a feminine nominative noun?

[Jellei]

Yes.

"Ta ryba jest duża. Ta jest mała." = "This fish is big. This one is small".

Or let's say "Ta rzecz jest książką. Ta jest jajkiem." = "This thing is a book. This one is an egg."

Generally it's not something you use often.

[Super-Svensk]

Why is jajko not in the instrumental case?

[PonyDesu]

You need to remember that after to jest you use the nominative case, hence to jest jajko.

[Super-Svensk]

Thank you!

[Andrew29778]

Why is "It is an egg" incorrect?

[Jellei]

It's correct and accepted, it should have worked.

[Gotso4ka]

Why "This is egg" is not correct?

[Jellei]

Eggs are generally countable, and for the rare examples when it could be treated as uncountable we would probably specify it further.

[Carin181060]

What Is the difference between "ten" "to" and "ta"?

[Jellei]

"ten" is masculine

"ta" is feminine

They all have to agree with the noun they describe in terms of grammar.

"to" is neuter