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