Breakdown of Czy wszyscy tu jesteście?
być
to be
tu
here
czy
[question particle]
wszyscy
everyone / all (the)
Questions & Answers about Czy wszyscy tu jesteście?
Where is the word for "you" in this sentence?
In Polish, the verb itself tells you who the subject is. The verb jesteście specifically means "you (plural) are", so the pronoun wy is usually dropped unless you want to add extra emphasis.
How does the verb jesteście fit into the plural forms of "to be"?
The verb być (to be) has unique forms for plural subjects. We use jesteśmy for "we are", jesteście for "you (plural) are", and są for "they are". The -ście ending is your big clue that it means "you" in the plural!
Why is the word wszyscy used here instead of another form of "all"?
Wszyscy means "all" or "everyone" when talking about a group of people that includes at least one man (the masculine personal plural). If you were asking a group made entirely of women, you would use the feminine plural form, wszystkie.
Why isn't the verb right after Czy like "Are" is in English?
The word Czy simply signals that a yes/no question is starting; it doesn't translate directly to "Are". Polish word order is very flexible, so putting wszyscy tu (all here) before the verb jesteście is perfectly natural and helps emphasize those words.