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