"Those boys are big."

Translation: Ti chlapci jsou velicí.

[Vincent177679]

What's the difference between velicí and velcí? It did accept velcí for me so is it always interchangeable? I think I've read it before but can't find it

[VladaFu]

They are completely interchangeable.

If any sentence was rejected and you want to know why, you must report the complete sentence.

[markscheck]

Could there be other answers to this "Jsou klucí velici" or using hoch?

[Praha2017]

"Ti/tamti/tamhleti chlapci/kluci/hoši jsou velicí". 'Jsou' shouldn't stand at the beginning unless you want to ask a question.

[trailrunner83]

Why "ti chlapci" instead of "to chlapci?"

[VladaFu]

Because chlapci are maculine animate. Do not confuse this with "to jsou"/"jsou to" that can be used with anything of any gender.

[BohemiJan]

'Ty kluci jsou velici' - does this make sense?

[AgnusOinas]

It makes sense, but "ty kluci" is common Czech, not standard. Since this course teaches standard Czech, you have to use "Ti kluci jsou velicí".

Notice how the soft ending (-i) occurs in each word: ten veliký kluk -> ti velicí kluci

[EstaJohnst1]

How many words are used for 'boys' - kluk, hosi, chcapci and more??
Are they used for different times??

[VladaFu]

See https://forum.duolingo.com/comment/27749621/So-many-different-ways-of-saying-things-hoch-kluk-chlapec