Perfect tense it's rules description application and examples

The perfect tense is a verb tense used to indicate that an action has been completed in the past. It is formed by using the auxiliary verb "have" or "has" followed by the past participle of the main verb. The perfect tense can be used to indicate actions that were completed recently, actions that were completed at a specific point in the past, or actions that have occurred multiple times in the past.

Rules:
1. Use "have" with plural subjects (I, you, we, they) and "has" with singular subjects (he, she, it).
2. The main verb should be in the past participle form.
3. Use the perfect tense to denote an action that has been completed in the past.

Examples:
- I have finished my homework.
- She has gone to the store.
- We have seen that movie before.
- He has visited Paris five times.
- They have lived in this house for ten years.

Application:
- To talk about actions that were completed before a certain point in the past.
- To talk about experiences or events that have happened recently.
- To talk about actions that have occurred multiple times in the past.
- To talk about actions that have a lasting effect in the present.