Verb tense tells you when the action happens. There are three main verb tenses: present, past, and future. Each main tense is divided into simple, progressive, perfect, and perfect progressive tenses.



Things to remember about simple tense:

a. Present tense is the original verb form.
b. Past tense has a few patterns.
c. Future tense needs will (shall) + verb.

run

I run a marathon twice a year. (present)
I ran a marathon last year. (past)
I will run a marathon next year. (future)
eat

I eat lunch in my office.
I ate lunch an hour ago.
I will eat lunch in one hour.
see

I see a movie once a week.
I saw a movie yesterday.
I will see a movie tomorrow.
know

I know it.
I knew it the day before yesterday.
I will know it by tomorrow.
learn

I learn English.
I learned English the last two years.
I will learn English next year.
cook

I cook my supper every night.
I cooked our dinner already.
I will cook breakfast tomorrow.