Questions & Answers about Kiedy będę w domu, będę czytać.
Why is będę used twice in this sentence?
It is doing two different jobs! The first będę means literally "I will be" (będę w domu = I will be at home). The second będę acts as a helper verb to create the future tense with czytać (będę czytać = I will read / I will be reading).
How does będę czytać create the future tense?
To talk about an ongoing or repeated action in the future, Polish pairs the future form of "to be" (here, będę for "I will") with the basic dictionary form of a verb (here, czytać). It literally looks like "I will to read," which translates smoothly to "I will be reading."
Why does the word for home change to domu in the phrase w domu?
The preposition w (in or at) requires the noun following it to change its ending to show location (a grammar rule called the Locative case). Here, dom changes to domu. Because "at home" is used so often, it is easiest for beginners to just memorize w domu as a set phrase.
Where is the word for "I" (ja) in this sentence?