Time to break another can of grammar open. This time the topic is expressing purpose and intention.There are a lot of grammar patterns that fall under this, but we need to start somewhere. Luckily, I have a little list of grammar topics to guide me. Today’s pattern therefore is -기로 하다. Let’s see what this one is about.
Promises and Decisions
[pullquote-left]This pattern is mainly used in its past tense form, -기로 했다.[/pullquote-left]
You can use the pattern -기로 하다 for two things. Either you use it to promise to do something with someone. The other meaning is that you express that you made decision or a resolution, a promise to yourself. The main difference in the sentence between the uses is that in the first use more than one person is mentioned.
While the pattern is -기로 하다, this pattern is almost always used in the past tense form, -기로 했다. This is because you already made up your mind, the 하다 has already finished.
Present Tense Meaning
While I did say that the past tense, -기로 했다, is mainly used, you will stumble upon it being used in the present tense sometimes. However, when it is used in its present tense, it is the speaker and listener making a promise to each other to do something together.
Example: -내일 뭐 할까요? -식당에서 점심을 먹기로 해요.
How to -기로 하다
A careful observer will have noted that this grammar pattern, uses another already discussed grammar pattern, -기. This is correct. Therefore the same rules apply to this pattern as it did to that grammar pattern. To form it you simply take the verb stem and attach -기로 했다. Then you simply properly conjugate 했다 further. As was the case with -기, no irregular verb group behaves weirdly.