The past simple tense is used to talk about completed actions or states in the past. It is formed by adding -ed to regular verbs, while irregular verbs have their own unique past tense forms. Here are some examples of sentences in the past simple tense:

• I walked to the store yesterday.
• She ate dinner at a restaurant last night.
• They played soccer in the park this morning.
• He studied for the exam all night.
• We watched a movie together last weekend.

In negative sentences, the auxiliary verb “did not” (didn’t) is used before the base form of the verb:

• I didn’t go to the party last night.
• She didn’t finish her homework on time.
• They didn’t buy any groceries at the supermarket.
• He didn’t call me back.
• We didn’t see each other for a long time.

In questions, the auxiliary verb “did” is used before the subject, and the base form of the verb is used:

• Did you go to the concert last night?
• Did she eat breakfast this morning?
• Did they visit their grandparents over the weekend?
• Did he finish his work on time?
• Did we meet at the park yesterday?