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