Novices just starting to learn Korean often will learn nouns but are confused by verb conjugation. For me, that meant that I would start out sentences, but get to the end and have no verb.
It turns out that some language learners figure out some tricks early on that give them an advantage in being able to speak within a certain domain. One of those tricks is that the hada verb 하다. Memorize how the hada verb conjugates in a few tenses, and you can use it with a whole bunch of hada verbs.
|좋아하다||to like||좋아해요||좋아했어요||좋아할 거예요|
|공부하다||to study||공부해요||공부했어요||공부할 거예요|
|수영하다||to swim||수영해요||수영했어요||수영할 거예요|
|노래하다||to sing||노래해요||노래했어요||노래할 거예요|
|사랑하다||to love||사랑해요||사랑했어요||사랑할 거예요|
|일하다||to work||일해요||일했어요||일할 거예요|
|요리하다||to cook||요리해요||요리했어요||요리할 거예요|
|말하다||to speak||말해요||말했어요||말할 거예요|
|행복하다||to be happy||행복해요||행복했어요||행복할 거예요|
|피곤하다||to be tired||피곤해요||피곤했어요||피곤할 거예요|
|정직하다||to be honest||정직해요||정직했어요||정직할 거예요|
|똑똑하다||to be smart||똑똑해요||똑똑했어요||똑똑할 거예요|