Question

자야 되는데 잠이 안 와요 The -아/어야 되/하- structure attaches to verb stems and coveys the meaning of 'must' or 'have to'. The pattern combines the -아/어야 ('only if') ending and the verb 되/하- ('become'/'do'). The literal meaning of -아/어야 되/하-, which does not pass into translation in its original form, is 'only if you do ... it will do'.The pattern can occur preceded by the past tense marker changing the meaning to 'should have done' used when talking about failed obligations.

Accepted Answer

I need to sleep, but I can't fall asleep

Front	자야 되는데 잠이 안 와요
Back	I need to sleep, but I can't fall asleep
Notes	The -아/어야 되/하- structure attaches to verb stems and coveys the meaning of 'must' or 'have to'. The pattern combines the -아/어야 ('only if') ending and the verb 되/하- ('become'/'do'). The literal meaning of -아/어야 되/하-, which does not pass into translation in its original form, is 'only if you do ... it will do'. The pattern can occur preceded by the past tense marker changing the meaning to 'should have done' used when talking about failed obligations.

아/어야 Meaning I 되/하 Verb Pattern 자야 되는데