Connect two korean verbs with 어/아
I have seen few korean verbs that is connceted with 어/아

like 사 오다
써 놓다
넣어 두다
Is there any rules what verbs I can connect like this?

Can't find any information about this.

Question

Connect two korean verbs with 어/아
I have seen few korean verbs that is connceted with 어/아

like 사 오다
써 놓다
넣어 두다
Is there any rules what verbs I can connect like this?

Can't find any information about this.

Answer

-어/아 can be used with following verbs
1. progress  진행
	(어)가다   ex) 사 가다
	(어)오다   ex) 사 오다
	
2. conclusion 종결
	(어)내다   ex) 잡아 내다
	(어)버리다 ex) 잡아 버리다
	
3. service 봉사
	(어)주다   ex) 도와 주다
	(어)드리다 ex) 도와 드리다
	
4. attempt 시행
	(어)보다   ex) 먹어 보다
	
5. possession 보유
	(어)두다   ex) 사 두다
	(어)놓다   ex) 사 놓다
	(어)가지다 ex) 사 가지다
	
6. passiveness 피동
	(어)지다   ex) 작아 지다
	
7. emphasis  강세
	(어)대다   ex) 먹어 대다
	
8. assumption 짐작
	(어)보이다 ex) 작아 보이다

Answer

Here's a good explanation: http://www.howtostudykorean.com/unit-3-intermediate-korean-grammar/lessons-67-75/lesson-70/

Don’t miss out on the opportunity to learn a language from the comfort of your own home. Browse our selection of experienced language tutors and enroll in your first lesson now!