Questions & Answers about У нас нет сока, поэтому мы пьём чай.
Why use поэтому here instead of потому что?
Both words link a cause and an effect, but they work differently. потому что means "because" and introduces the reason, while поэтому means "so" or "therefore" and introduces the result. Since drinking tea is the result of not having juice, we use поэтому.
Why is the word for juice сока instead of just сок?
In Russian, the word нет (meaning "there is no" or "we do not have") always requires the noun following it to take the genitive case. The genitive form of the masculine noun сок is сока.
Literally, how does У нас нет translate to "We do not have"?
Russian rarely uses a direct verb for "to have." Instead, it uses a structure meaning "by [someone] there is [something]." У means "by" or "at," and нас is the pronoun "us." So, У нас нет literally translates to "By us there is no..."
Why doesn't the word чай change its ending, since it is the direct object we are drinking?
You are right that direct objects take the accusative case! However, чай is a masculine, inanimate noun (a non-living thing). For inanimate masculine nouns, the accusative form looks exactly the same as the basic dictionary form.