The verb to undo · Conjugation
Present Continuous of undo
The answer: am / is / are undoing
A1
An action happening now, at the moment of speaking.
Quick answer
The Present Continuous of the verb to undo is am / is / are undoing.
Example: I am undoing the knot right now.
Full conjugation in the Present Continuous
| Pronoun | Form | Contraction |
|---|---|---|
| I | am undoing | I'm undoing |
| You | are undoing | You're undoing |
| He / She / It | is undoing | He's / She's / It's undoing |
| We | are undoing | We're undoing |
| You (pl.) | are undoing | You're undoing |
| They | are undoing | They're undoing |
Common mistakes to avoid
1. She undoing ❌
The Present Continuous always has two parts: am, is or are + the -ing form. Without the helper verb, the sentence is wrong: say she is undoing, I am undoing. Without -ing, it is wrong too: she is undo ❌.
2. I am knowing ❌
Some verbs describe a state, not an action: know, understand, want, need, like, love, believe, remember. They are not normally used in the continuous, even for right now: I know the answer, I don't understand.
3. I am playing football every Saturday ❌
For habits and routines, use the Present Simple: I play football every Saturday. Use the Present Continuous only for now or for a short time: I am playing football right now. With undo: I undo for a habit, I am undoing for right now.
Practice quiz
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Frequently asked questions
How do you conjugate undo in the Present Continuous?+
Use am, is or are (the present of be) + the -ing form undoing. Use am with I, is with he, she and it, and are with you, we and they. For example: I am undoing, she is undoing, they are undoing. In speech, you usually say I'm, she's, they're.
When do you use the Present Continuous of undo?+
Use it for an action happening now, at the moment of speaking. Also use it for a situation that is only temporary (this week, these days). Common signal words are now, right now, at the moment and Look!
What is the difference between I undo and I am undoing?+
I undo is the Present Simple: a habit or a fact. I am undoing is the Present Continuous: an action happening now, or for a short time. Compare: I play football every Saturday and I am playing football right now.
How do you make the negative and the question of undo in the Present Continuous?+
Negative: add not after am, is or are: I'm not undoing, she isn't undoing, they aren't undoing. Question: put am, is or are before the subject: Are you undoing…?, Is she undoing…? Do not add do: Do you are undoing? is wrong.
What is the -ing form of undo?+
The -ing form of undo is undoing. You just add -ing: undo → undoing. You also use it in the Past Continuous (I was undoing) and after a preposition (before undoing).
Related pages: undo Present Continuous
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/undo/present-continuous
© 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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