Example Sentences of the Verb Know

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This page provides example sentences of the verb "Know" in all tenses including active and passive forms, as well as conditional and modal forms.

Base Form know / Past Simple knew / Past Participle known / Gerund knowing

Present Simple

He knows a lot of people in Paris.

Present Simple Passive

The President is known to be in trouble.

Present Continuous

None

Present Continuous Passive

None

Present Perfect

They have known each other for years.

Present Perfect Passive

The facts in the case have been known since last year.

Present Perfect Continuous

None

Past Simple

She knew it was time to leave.

Past Simple Passive

The story was known by all in the room.

Past Continuous

None

Past Continuous Passive

None

Past Perfect

They had known about the problem before they told him.

Past Perfect Passive

The problem had been known about by all before they told him.

Past Perfect Continuous

None

Future (will)

She will know it's you.

Future (will) passive

You will be known by everybody in the room.

Future (going to)

She is going to know the answer soon.

Future (going to) passive

The answer is going to be known at the end of the lesson.

Future Continuous

None

Future Perfect

They will have known Jack for twenty years by the end of this month.

Future Possibility

She might know the answer.

Real Conditional

If she knows the answer, she will tell you.

Unreal Conditional

If she knew the answer, she would tell you.

Past Unreal Conditional

If she had known the answer, she would have told you.

Present Modal

Andy should know the answer.

Past Modal

Andy should have known the answer.

Quiz: Conjugate with Know

Use the verb "to know" to conjugate the following sentences. Quiz answers are below. In some cases, more than one answer may be correct.

They _____ about the problem before they told him.
The President _____ to be in trouble.
The facts in the case _____ since last year.
They _____ Jack for twenty years by the end of this month.
If she _____ the answer, she will tell you.
The story _____ by all in the room at the trial yesterday.
They _____ each other for years.
He _____ a lot of people in Paris.
If she _____ the answer, she would have told you.
She _____ it's you.

Quiz Answers

had known
is known
have been known
will have known
knows
was known
have known 
knows
had known
will know

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