Verbs with -ought changing to -aught

English irregular verbs with "-ought" changing to "-aught" in the past tense are a group of verbs that have a unique spelling change in their past tense form. These verbs change their vowel sound from "o" to "a" in the past tense, which makes them irregular.

Some examples of English irregular verbs with "-ought" changing to "-aught" are:

"Bring" - In the past tense, "bring" becomes "brought" with the vowel sound changing from "o" to "a."

"Buy" - In the past tense, "buy" becomes "bought" with the vowel sound changing from "o" to "a."

"Catch" - In the past tense, "catch" becomes "caught" with the vowel sound changing from "o" to "a."

"Teach" - In the past tense, "teach" becomes "taught" with the vowel sound changing from "o" to "a."

The past indefinite tense, also known as the simple past tense, is a verb tense used to describe actions or events that happened in the past and are now completed. In this tense, the verb form changes depending on the subject, but for regular verbs, it is formed by adding "-ed" to the base form. For irregular verbs, it can take many different forms, and it's essential to learn them to communicate effectively in English.