Foundations
Separate time, ability and intention
Explanation
Past, future, obligation and possibility are different claims. 갔어요 says someone went; 갈 거예요 normally gives a future plan or prediction. 가야 해요 means that going is necessary. 갈 수 있어요 means that going is possible. A distractor can preserve the verb but change this relationship.
Watch negative expressions too. 안 가요 says that someone does not go; 못 가요 says that they cannot go. In a passage, a reason such as 일이 있어서 may explain an inability to accept an invitation. Do not turn that reason into an agreement to attend.
Examples and what to notice
오늘은 못 가요. 내일 갈 거예요.
I cannot go today. I will go tomorrow.
표를 사야 해요. / 표를 살 수 있어요.
I need to buy a ticket. / I can buy a ticket.
책을 읽으려고 해요.
I intend to read a book; it is not yet a statement that I finished it.
Apply it to a question
- Read each example and identify the form that carries the information discussed above.
- Cover the explanation and explain the difference in meaning in your own words.
- Move to a listening or reading question type and check the complete sentence before choosing an answer.