Irregular Verb Think: think - thought - thought
The irregular verb think does not form its past tense by adding -ed.
| Base form | Simple past | Past participle |
|---|---|---|
| think | thought | thought |
How to Use It
- Present: I think.
- Past: Yesterday I thought.
- Present perfect: I have thought.
Remember
Use the past participle (thought) after have, has or had, and in passive sentences. Learn the three forms together: think - thought - thought.
See also: The Simple Past Tense and The Present Perfect Tense.