manyakumi wrote:
(너는) 덫을 놓기만 하면 된다.
...기만 하면 되다 is so useful in that case.
You can even express its original nuance of 'only' by using it.
Right.
You can use '만' to convey the thought in 'all you have to do'.
Here are the dictionary definitions for '만':
만
1【단지 limited to one time or thing】only;alone;just;merely;simply;very;but;except
꼭 한번*만 봐줘 take a look or give me a break only once
일생에 딱 한번*만 하는게 뭐지? What a thing you do only once in your life time?
한번*만 더 해 do just once more
이번*만은 않돼 no can do for this once/for this time only
방에는 그녀와 그 둘*만 있었다 He was alone with her in the room.
하나*만 주시오 Give me just one.
저 사람은 독서하는 것*만이 일이다 Reading is his exclusive occupation.
그것만이 아니다 Not only that (there are more)
그의 이름을 듣기만 해도 몸서리가 난다 I shudder at hearing his very name alone.
선원들은 매일 바닷물만 보고 지냈다 The sailors spent their time seeing nothing but water every day.
2【정도·범위 degree or boundary】as many as;as much as;enough 《to do a thing》;to the amount[extent] of;so far as;all one has[can];all there is
이만큼*만 있으면 사전을 살 수 있다 This amount will be enough to buy a dictionary.
그*만한 길이로 충분합니까? Is it long enough?
평판*만으로 판단할 때 그는 위대한 사람같다 Being judged only by reputation, he seems to be a great man.
오늘은 이*만 해 두자 let's leave at that (much) for today.
그런 생각을 가지고 있는 것은 일부 사람들*만이다 The idea is limited only to a certain group of people.
자네 차를 오전중*만 빌릴 수 없을까? Can´t I borrow your car for this morning only?
잘 모르지만 그에게 애인이 없다는 것*만은 확실하다 I am not quite sure, but one thing I can say positively is that he has no girlfriend.
3【상당 worth]
500원어치*만 주세요 Please give me only 500 won´s worth.
이 책은 읽을 *만하다 This book is worth reading.
나도 먹고 살 *만한 수입이 필요하다 I must have income enough to get by.
4【적어도】at least
나는 한 달에 만 원*만이라도 저축하고 싶다 I wish to save at least ten thousand won a month.
나는 아들에게 중학교*만은 보내고자 한다 I try to get my boy at least middle school education .
5【비교】as...as
그의 키는 너*만하다 He is as tall as you.
이 꽃은 그*만 못하다 This flower is not so pretty as that.
I am a forever ESL student.