One word can flip a sentence.
Add "not" after an auxiliary or modal verb, or swap in a word like never, nobody, or nothing, and a sentence reverses its meaning. Learn the patterns, then watch them happen in real time.
Turning a sentence negative
Most negation comes down to one small word, but there are a few different patterns depending on the verb and the meaning you want. Open each card to see the pattern and real examples.
The auxiliary — do/does/did, am/is/are, was/were, have/has/had — carries the "not"; the main verb never changes form.
Contractions (don’t, isn’t, hasn’t) are standard in speech and informal writing.
I do not (don’t) like spinach. (present simple)
She is not (isn’t) reading a book. (present continuous)
They had not (hadn’t) eaten before the meeting. (past perfect)
Modals include can, could, will, would, shall, should, may, might, and must.
"Cannot" is usually written as one word, unlike other modal + not pairs.
I cannot (can’t) swim.
She should not (shouldn’t) be late.
They might not come.
"No" + noun already carries the negative meaning — the verb itself stays positive.
Never, nobody/no one, nothing, and nowhere work the same way — one negative word does the whole job.
There is no milk in the fridge.
I have never been to Japan.
Nobody knows the answer.
There is nothing in the box.
The negated auxiliary or modal moves to the front of the question, usually contracted.
Negative questions often expect a "yes" — they can show surprise or confirm what the speaker already believes.
Aren’t you coming?
Didn’t he call?
Standard English uses only ONE negative per clause.
Two negatives cancel out and flip back to a positive meaning — often not what the speaker intended.
Incorrect: I don’t need no help. (literally means "I need help")
Correct: I don’t need any help.
| Pattern | Its job | Common examples |
|---|---|---|
| Not | Negates the auxiliary verb | don’t, isn’t, hasn’t |
| Modal + not | Negates a modal verb | can’t, shouldn’t, might not |
| No / negative words | Replaces a positive word with a negative one | no, never, nobody, nothing, nowhere |
| Negative questions | Asks with a negated auxiliary or modal | Aren’t you…? Didn’t he…? |
| Double negatives | Incorrect — two negatives cancel out | don’t need no help |
Flip it to negative
Ten quick questions — some multiple choice, some fill-in-the-blank — covering "not," negative words, and negative questions. You get instant scoring and a short explanation for every answer.
One small word, one big flip
Most negation in English comes down to a single word — not — slotted after an auxiliary or modal verb, or swapped in as never, nobody, nothing, or no. Use just one negative per clause, and every sentence you flip will say exactly what you mean.