sukjereul haeseo chinguwa norayo.

I do my homework and then play with my friends.

Breakdown of sukjereul haeseo chinguwa norayo.

• 하다: to do
• ~을: object particle
• 친구: friend
• ~와: comitative particle

Questions & Answers about sukjereul haeseo chinguwa norayo.

What function does -아서/어서 serve in 해서?

-아서/어서 is a connective ending that links two verbs. It can express:

• Sequence (“do A and then do B”) as in 숙제를 해서 친구와 놀아요 (“I finish homework and then play with my friend”).
• Reason or cause (“because A, B happens”), e.g. 배가 고파서 밥을 먹었어요 (“I was hungry, so I ate”).

Here, it shows you complete the first action before moving on to the second.

How is -아서/어서 different from -고 when linking verbs?

Both -아서/어서 and -고 connect actions, but:

• -고 is a neutral listing connector: “A and B” without implying cause or sequence strongly.
  Example: 책을 읽고 텔레비전을 봐요 (“I read a book and watch TV”).
• -아서/어서 emphasizes that A is a prerequisite or direct cause/sequence of B.
  In 숙제를 해서 친구와 놀아요, doing homework is necessary before playing.

Why is 친구와 used instead of 친구랑, and can I use 친구랑 here?

Both -와/과 and -랑/이랑 mean “with,” but differ in formality:

• -와/과 is slightly more formal or written.
• -랑/이랑 is colloquial and very common in speech.

You can say 숙제를 해서 친구랑 놀아요 in everyday conversation without changing the meaning.

Why is there no subject like “I” in this sentence?