W kuchni jest dużo dymu, więc otwórz okno.

to be

Breakdown of W kuchni jest dużo dymu, więc otwórz okno.

• w: in
• okno: the window
• otworzyć: to open

Questions & Answers about W kuchni jest dużo dymu, więc otwórz okno.

Why is it w kuchni and not w kuchnia?

Because after w meaning in, Polish uses the locative case when talking about location.

• kuchnia = kitchen
• w kuchni = in the kitchen

So:

• kuchnia is the basic dictionary form
• kuchni is the locative singular form

This is very common:

• w domu = in the house
• w szkole = at school
• w pracy = at work

Why is there jest in this sentence?

Jest is the 3rd person singular form of być (to be). In this sentence it works like there is in English:

• W kuchni jest dużo dymu = There is a lot of smoke in the kitchen

Polish often uses jest in sentences that introduce the existence or presence of something somewhere.

Compare:

• Na stole jest książka = There is a book on the table
• W pokoju jest zimno = It is cold in the room

Why is it dużo dymu and not dużo dym?