jibeseo chinguwa hamkke dongyeongsangeul bwayo.

I watch videos at home with a friend.

Breakdown of jibeseo chinguwa hamkke dongyeongsangeul bwayo.

• ~을: object particle
• 집: home
• ~에서: location particle
• 친구: friend

Questions & Answers about jibeseo chinguwa hamkke dongyeongsangeul bwayo.

What does -에서 in 집에서 mean, and how is it different from -에?

-에서 marks the location where an action takes place (“at” or “in” when you’re doing something there).
-에 simply marks a static location or destination (“to,” “at” when you’re not emphasizing an action happening there).
So 집에서 means “at home (while doing something),” whereas 집에 could mean “to home” or “at home” in a non-action context.

Why use 와 in 친구와 함께 instead of 하고 or 랑?

All three can mean “with,” but there are style and sound rules:

• 와 attaches to consonant-ending nouns (친구 ends in “구,” a vowel sound actually, but grammatically treated).
• 과 attaches to vowel-ending nouns in writing (친구과 is archaic; we say 친구와).
• 하고 and 랑 are more casual:
  
  • 친구하고 and 친구랑 are perfectly fine in speech.
    Use 와/과 in more formal or written contexts; 하고/랑 in everyday conversation.

What does 함께 add in 친구와 함께 동영상을 봐요, and can I use 같이 instead?

함께 means “together” in a slightly more formal or literary tone.
같이 also means “together” but is more colloquial.
Both are correct:

• 친구와 함께 – polite, formal nuance
• 친구하고 같이 or 친구랑 같이 – everyday casual speech