Throw is an irregular verb. Its past tense form (threw) must be memorized as it does not follow standard conjugation rules.
Verbs that follow a similar irregular pattern to throw:
| Base | Past Tense | Pattern |
|---|
Throw is irregular. Its past tense (threw) must be memorized.
Use past time markers: "Yesterday, she threw to the store."
No. Use "did not throw" (not "did not threw").
The verb throw is an irregular verb in English. Unlike regular verbs that simply add -ed, throw changes to threw in the past tense. This irregular form must be memorized as it does not follow the standard conjugation rules.
Irregular verbs like throw/threw trace back to Old English strong verbs, where vowel changes (ablaut) indicated tense shifts. Over centuries, most verbs regularized to the -ed pattern, but the most frequently used verbs retained their irregular forms because they were too common to change. This is why go/went, see/saw, and break/broke remain irregular today.
When using threw in writing, remember that it functions as a past tense verb and typically appears with time markers like yesterday, last week, or ago. For example: "Yesterday, she threw to the store." The past tense form does not change based on the subject — I threw, you threw, he/she threw, we threw, they threw.