Verbs do a lot of work in sentences. They show actions and states of being. They even take different forms to show time.
Verb tenses
flies
flew
will fly
The tense of a verb indicates the time of the action or state of being expressed by the verb.
Perfect tenses
Indicate that something happened or existed before a specific point in time
Each tense has a progressive form
Used to express continuing action or state of being
Progressive forms of verb tenses
Present progressive
Past progressive
Future progressive
Present perfect progressive
Past perfect progressive
Future perfect progressive
The present tense expresses an action or a state of being that is occurring now, at the present time.
A helping verb is used with a main verb to create a verb phrase.
Commonly used helping verbs
is
are
has
had
did
does
can
could
should
will
The present perfect tense is also used to express an action or state of being that began in the past and continues into the present.
The past tense expresses an action or a state of being that occurred in the past but did not continue into the present.
The past perfect tense expresses an action or a state of being that ended before another past action or state of being occurred.
The future tense expresses an action or a state of being that will occur.
Future
The future tense is usually formed using 'will' or 'shall' plus the base form and expresses an action or a state of being that will occur
My family will ride the train to Chicago
We will be arriving at five o’clock (Progressive form)
We can also express future action in other ways
We are going to make our own costumes
They are about to begin the awards ceremony
I have a test tomorrow
The future perfect tense is usually formed using 'will have' or 'shall have' plus the past participle and expresses an action or a state of being that will end before another future action or state of being
By the time you receive this letter, she will have returned home
After this trip, he will have been to Chicago three times
Lia will begin the yard work later
Lia will have begun the yard work by noon
Jamie lived there for three years
Jamie has been living there for three years
Some of the girls were practicing karate
Some of the girls have practiced karate
Expresses an action (beginning the yard work) that will occur in the future (later)
Expresses an action (beginning the yard work) that will be complete before some future action takes place (lunch)
The action (lived) occurred in the past and did not continue into the present
The action (has been living) was occurring in the past and continues into the present
The action (practicing) was occurring in the past and did not continue into the present
The action (practiced) occurred in the past and continues into the present
Change the tense of the verb in each sentence, as indicated in parentheses