The simple past tense is used to talk about completed actions or states in the past. It is formed by adding -ed to regular verbs, or by using the irregular form of the verb. For example:
- I walked to the store yesterday. - She ate dinner at a restaurant last night. - They played soccer on Saturday.
In negative sentences, the auxiliary verb "did not" (didn't) is used before the base form of the verb. For example:
- I didn't go to the party. - She didn't finish her homework.
In questions, the auxiliary verb "did" is used before the subject, and the base form of the verb is used. For example:
- Did you see the movie? - Did they arrive on time?
Note that for the third person singular (he, she, it), regular verbs add -ed, while irregular verbs have their own unique past tense forms. For example:
- He walked to school. - She ate breakfast. - It rained all day.
It is important to note that there are some irregular verbs that do not follow the -ed pattern, such as "go" (went), "be" (was/were), and "have" (had).