Question

우리는 햄버거를 사러 드라이브 인에 들렀어요 -(으)러 is a verb ending expressing intention similarly to English '(in order) to'.In two-clause sentences 'A(으)러 B', the clause B describes where the subject comes/goes to in order to realize the intention or plan expressed in the clause A. The content of the second clause is limited to what is related to movement verbs, like 가다, 오다, 다니다, 올라가다, 내려가다, 나가다, or 들어가다.The two common usage patterns of -(으)러 are -(으)러 가- and -(으)러 오-. Verbs not included in the category of movement cannot follow -(으)러.-(으)러 cannot be preceded by tense markers. The pattern cannot attach to movement verbs, i.e., an intention or plan to go or come somewhere cannot be expressed with -(으)러.Both -(으)려(고) and -(으)러 mark the intention in two-clause expressions. However, these two connectives cannot be used interchangeably in all cases.-(으)러 can be used only when followed by movement verbs, such as 가다, 오다, or 다니다. Expressions with -(으)려(고) allow any verb in the second clause.Unlike -(으)러, the -(으)려(고) ending cannot be followed neither by a future tense clause nor by a clause expressing an imperative or proposal.Finally, there are no limitations for verbs -(으)려(고) can attach to. Whereas, -(으)러 cannot be used after verbs of movement.Intentions described by movement verbs can be expressed with -(으)려(고) or -기 위하-.

Accepted Answer

We stopped at a drive-in for a hamburger

Front	우리는 햄버거를 사러 드라이브 인에 들렀어요
Back	We stopped at a drive-in for a hamburger
Notes	-(으)러 is a verb ending expressing intention similarly to English '(in order) to'. In two-clause sentences 'A(으)러 B', the clause B describes where the subject comes/goes to in order to realize the intention or plan expressed in the clause A. The content of the second clause is limited to what is related to movement verbs, like 가다, 오다, 다니다, 올라가다, 내려가다, 나가다, or 들어가다. The two common usage patterns of -(으)러 are -(으)러 가- and -(으)러 오-. Verbs not included in the category of movement cannot follow -(으)러. -(으)러 cannot be preceded by tense markers. The pattern cannot attach to movement verbs, i.e., an intention or plan to go or come somewhere cannot be expressed with -(으)러. Both -(으)려(고) and -(으)러 mark the intention in two-clause expressions. However, these two connectives cannot be used interchangeably in all cases. -(으)러 can be used only when followed by movement verbs, such as 가다, 오다, or 다니다. Expressions with -(으)려(고) allow any verb in the second clause. Unlike -(으)러, the -(으)려(고) ending cannot be followed neither by a future tense clause nor by a clause expressing an imperative or proposal. Finally, there are no limitations for verbs -(으)려(고) can attach to. Whereas, -(으)러 cannot be used after verbs of movement. Intentions described by movement verbs can be expressed with -(으)려(고) or -기 위하-.

으)러 Clause Movement 으)려(고 Intention Verbs Expressed Ending