The verb to know · Conjugation
Conditional (would) of know
The answer: would know
B1
An imaginary or hypothetical situation.
Quick answer
The Conditional (would) of the verb to know is would know.
Example: I would know the answer if I read the book.
Full conjugation in the Conditional (would)
| Pronoun | Form | Contraction |
|---|---|---|
| I | would know | I'd know |
| You | would know | You'd know |
| He / She / It | would know | He'd / She'd / It'd know |
| We | would know | We'd know |
| You (pl.) | would know | You'd know |
| They | would know | They'd know |
Common mistakes to avoid
1. If I would have money ❌
Do not use would after if. In the if part, use the Past Simple. Would goes in the other part: If I had money, I would travel. The present is wrong too: If I have money, I would travel ❌.
2. I would to know ❌
After would, use the base form, with no to and no -s: I would know, she would know. This is true for all modal verbs (helper verbs like can, could, should and must). But remember I would like to know: here, to belongs to like.
3. I would can know ❌
Would cannot go with can or must. Use could instead of “would can”: I could know. Use would have to instead of “would must”: I would have to know.
Practice quiz
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Frequently asked questions
How do you conjugate know with would?+
Use would + the base form (the verb with no to): would know. The form is the same for every person: I would know, she would know, they would know. The short form is 'd: I'd know.
When do you use would know?+
Use would for an imaginary situation that is not real now: If I had more time, I would learn the guitar. You also use it to be polite: Would you like some juice?, I'd like a sandwich, please.
How do you use would know in a sentence with if?+
Use if + the Past Simple in one part of the sentence, and would know in the other part. Example: If I had more money, I would buy a new bike. Never put would in the if part: If I would have more money is wrong.
What is the difference between will know and would know?+
Will know is for the real future: something you think will happen. Would know is for an imaginary situation. Compare: If it's sunny tomorrow, we will go to the beach (this is possible). If I lived near the sea, I would go to the beach every day (but I don't live near the sea).
What are the short forms of would know?+
Would becomes 'd: I'd know, she'd know. The negative would not becomes wouldn't: I wouldn't know. Careful: 'd can also mean had. 'd + base form = would; 'd + past participle = had.
Related pages: know Conditional (would)
Pages on a similar topic or with a similar use, so you can keep exploring.
Updated on 12 November 2026 by the Big Challenge teaching team. Every year, more than 500,000 students across Europe take part in our English contest, created in 1999. Our teaching approach →
The Big Challenge · Updated on 12 November 2026 · Source: www.thebigchallenge.com/bl/academy/learn-english/verbs/know/conditional-would
© The Big Challenge. Copying allowed for classroom use. Every year, more than 500,000 students across Europe take part in our English contest, created in 1999.
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