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