Past, Present, and Future Tenses

Past tense is used to describe actions that have already happened.

I climbed a tree yesterday.

Present tense is used to describe actions that are currently happening or habitual actions.

I eat sushi.

Future tense is used to describe actions that will happen later.

I will build a tower when I get home.

The base form of the verb, often with an 's' or 'es' for third person singular.

Simple present describes habitual actions, while present continuous describes actions happening right now.

I am eating sushi.

By adding -ed to the base form of the verb.