do的过去式是什么?

do的过去式是什么?

The past tense of the verb "do" is did. This irregular verb does not follow the typical "-ed" ending for past tense verbs in English. For example, in a sentence: "Yesterday, I did my homework after school." The word "did" replaces "do" to indicate the action occurred in the past.

Understanding irregular verbs like "do" is essential for forming grammatically correct sentences. Unlike regular verbs such as "walk" (walked) or "talk" (talked), "do" undergoes a vowel change rather than adding an ending to form its past tense. This pattern appears in other common irregular verbs like "go" (went) and "eat" (ate).

What other irregular verbs have you encountered that don’t follow the standard past tense rules? Recognizing these exceptions helps build fluency in both written and spoken English.