Chci postavit nový dům.

the house

Breakdown of Chci postavit nový dům.

• chtít: to want
• nový: new
• postavit: to build

Questions & Answers about Chci postavit nový dům.

What does each word in Chci postavit nový dům do?

• chci = I want
• postavit = to build / to put up / to erect
• nový = new
• dům = house

So the structure is literally:

• chci
  • postavit = I want to build
• nový dům = a new house

Czech often works very neatly here: want + infinitive + object.

Why is it chci and not chtít?

Chtít is the dictionary form, meaning to want.

In the sentence, you need the 1st person singular present form, because the speaker is I.
So:

• chtít = to want
• chci = I want

A few present-tense forms of chtít are:

• chci = I want
• chceš = you want
• chce = he/she/it wants
• chceme = we want
• chcete = you want / you all want
• chtějí = they want

So Chci postavit nový dům means I want to build a new house.

Why is postavit in the infinitive?