Often, when the base ends in -ck, -e, -g, -ght, or -n, the past tense will keep that final letter or set of letters. Sometimes you'll add -d ( sell → sol d) or -ght ( catch → cau ght) instead. One of the most common irregular past tense endings is -t ( sweep → swep t). Eat, for example, turns into at e in the past tense. Other verbs require you to change a vowel and add a new ending. The verb dr ive, for example, changes to dr ove in the past tense. With the irregular past tense, it is common for a vowel in the middle of the verb to change instead of the verb's ending. Let's take a closer look at how the irregular past tense and past participles are formed. You'll learn more about this concept later in this lesson. Most irregular verbs follow a specific pattern.Beg an (base form, beg in) and fr oze (base form, fr eeze) are a two good examples.
Some examples are at e, fough t, swa m, and give n.
Here are a few basics you'll want to remember about the irregular past tense and past participle forms. Irregular Past Tense and Past Participles
