Я куплю холодный напиток, и мы пойдём в парк.
I will buy a cold beverage, and we will go to the park.
Questions & Answers about Я куплю холодный напиток, и мы пойдём в парк.
Why is the future tense just one word (куплю, пойдём) instead of using буду?
Купить (to buy) and пойти (to go) are perfective verbs. Perfective verbs do not use быть (to be) for the future tense. Instead, you just conjugate them like present tense verbs, and they automatically mean the future! You use буду + infinitive only with imperfective verbs.
Холодный напиток is the object being bought, so shouldn't its ending change in the accusative case?
It is in the accusative case! For masculine nouns, the accusative case looks exactly like the nominative (dictionary) form if the object is inanimate (not a person or animal). So напиток stays напиток, and its adjective холодный also stays exactly the same.
Why do we use в парк (accusative) instead of в парке (prepositional)?
We use the accusative case after в when talking about motion towards a destination (Where to?). If you were already resting or doing something inside the park (Where at?), you would use the prepositional case: в парке.
How can I change the first part of this sentence to ask 'May I buy a cold drink?' using this lesson's topic (можно)?
You would say: Можно мне купить холодный напиток? Notice that можно is followed by the infinitive купить. If you want to specify who is doing the action, use the dative case for the pronoun (мне).