The verb to think · Conjugation
Present Perfect of think
The answer: have / has thought
B1
A past action with a link to the present.
Quick answer
The Present Perfect of the verb to think is have / has thought.
Example: I have thought about it a lot.
Full conjugation in the Present Perfect
| Pronoun | Form | Contraction |
|---|---|---|
| I | have thought | I've thought |
| You | have thought | You've thought |
| He / She / It | has thought | He's / She's / It's thought |
| We | have thought | We've thought |
| You (pl.) | have thought | You've thought |
| They | have thought | They've thought |
Common mistakes to avoid
1. I have think ❌
After have or has, use the past participle thought, not think: I have thought about it, never I have think about it.
2. Thinked ❌
Think is an irregular verb, so it does not take -ed. Its past participle is thought, never thinked. This is a very common mistake for beginners.
3. Thought with a /g/ sound ❌
In thought, the letters gh are silent: /θɔːt/, like bought, brought, fought and caught. The first sound, th (/θ/), is made with your tongue between your teeth.
Practice quiz
Going further
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Frequently asked questions
What is the present perfect of think?+
Use have thought or has thought. Thought is the past participle of think (the same as the Past Simple). I have thought about it means that I thought about it and it still matters now.
How do you pronounce thought?+
Thought is said /θɔːt/. The th is the sound in think: put your tongue between your teeth. Then comes a long vowel, /ɔː/, like in port. The letters gh are silent. It rhymes with bought, brought, fought and caught.
Is it I thought about it or I have thought about it?+
Use I have thought about it (Present Perfect) when the thinking is finished but still matters now: I have thought about it, and my answer is yes. With a finished time like yesterday, use the Past Simple: I thought about it yesterday.
Why is the past participle of think the same as the past simple?+
Many common irregular verbs work like this: have → had → had, make → made → made, say → said → said, and think → thought → thought. This is good news: you only learn one past form for the Past Simple and the past participle.
How do you make questions and negatives with have thought?+
Negative: I haven't thought about it, she hasn't thought of a name. Question: put have or has before the subject: Have you thought about it? Has she thought of a name? Thought does not change.
Related pages: think Present Perfect
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/think/present-perfect
© 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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More forms of the verb to think are coming soon.