Verbs ending in -e simply add -d to form the past tense. This is the most straightforward regular rule.
Contaminate is regular. It follows the -d Addition rule.
Use past time markers: "Yesterday, she contaminated to the store."
No. Use "did not contaminate" (not "did not contaminated").
The verb contaminate follows the standard English past tense conjugation rule. When forming the past tense, contaminate becomes contaminated. This follows the -d Addition pattern, which is one of the most common conjugation rules in English.
Understanding why contaminate becomes contaminated helps with spelling and pronunciation. Verbs ending in -e simply add -d to form the past tense. This is the most straightforward regular rule.
When using contaminated 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 contaminated to the store." The past tense form does not change based on the subject — I contaminated, you contaminated, he/she contaminated, we contaminated, they contaminated.