Present Continuous Tense

To make the present continuous tense (an action that is going on right now) you take the infinitive form of the verb, drop '다' to get the verb stem, and add 고 있다.

Then conjugate 있다 for the politeness level you want: 반말 하고 있어, 중간말 하고 있어요, 높임말 하고 있습니다.

When conjugating a verb, you must drop '다'. With that basic verb stem, you can conjugate the verb according to the 3 different politeness levels: Casual formality, Polite low formality, Polite high formality.