"Let's watch a horror movie together."
For a mock conversation essay. Staying with formal language for now.

I keep confusing how to sort of place "let's / let us" and "together" or if they're redundant.

Thank you!

Question

"Let's watch a horror movie together."
For a mock conversation essay. Staying with formal language for now.

I keep confusing how to sort of place "let's / let us" and "together" or if they're redundant.

Thank you!

Answer

There are a few different ways to say "let us" in Korean:
1. -아/어/여요 [polite/plain]
2. -(으)시죠 [honorific]
3. -자 [informal]

Let's start.
1. 시작해요. (plain)
2. 시작하시죠. (honorific)
3. 시작하자. (informal)

Together : 함께, 같이
a horror movie : 공포영화
watch : 보다

Let's watch a horror movie together
1. (우리) 같이 공포영화를 봐요. (plain)
2. (우리) 같이 공포영화를 보시죠. (honorific)
3. (우리) 같이 공포영화를 보자. (informal)