Завтра я надену новую куртку.

Tomorrow I will put on a new jacket.

Breakdown of Завтра я надену новую куртку.

• я: I
• новый: new
• завтра: tomorrow
• куртка: the jacket
• надеть: to put on

Questions & Answers about Завтра я надену новую куртку.

What’s the difference between the Russian verbs надеть and одеть, and why do we use надену here?

• надеть (perfective) means “to put on” (clothes, shoes) on yourself or an object.
• одеть (perfective) means “to dress someone (else).”
In our sentence you’re talking about putting the jacket on yourself, so you use the verb надеть in its future‐perfective form я надену.

Why is надену perfective, and how would you express “I will be putting on a jacket” as an ongoing or habitual action?

• надену is perfective – it emphasizes the completion of the action (“I will put on and be wearing it”).
• To speak of an ongoing or repeated action, use the imperfective future with буду + infinitive: Я буду надевать новую куртку (“I will be putting on a new jacket” or “I will repeatedly put on a new jacket”).

What case is новую куртку, and why do the endings change to -ую and -ку?

• новую куртку is in the accusative singular feminine because it’s the direct object of надену.
• Feminine adjectives ending in -ая change to -ую in the accusative: новая → новую.
• Feminine nouns ending in -а change to -у: куртка → куртку.

Why is завтра placed at the beginning of the sentence? Can I move it elsewhere?

Russian word order is quite flexible:
• Завтра я надену новую куртку. (emphasis on “tomorrow”)
• Я завтра надену новую куртку. (neutral)
• Я надену новую куртку завтра. (emphasis on “jacket” or “tomorrow” depending on intonation)
You can move завтра for stylistic emphasis without changing the core meaning.

Do I have to include the pronoun я, or can it be omitted?

Subject pronouns are optional in Russian if the verb ending makes the subject clear.
You can say: Завтра надену новую куртку.
Here -у in надену already tells the listener it’s “I” (1st person singular).

How is Завтра я надену новую куртку pronounced, and where do I put the stress?

Phonetic outline with stresses (caps = stressed syllable):
[ˈZAF-tra ya na-dʲɪ-ˈNU ˈNO-vu-yu ˈKUR-tku]
• ЗА́втра – stress on the first syllable.
• наде́ну – stress on the second syllable.
• но́вую, ку́ртку – stress on the first syllable of each word.