Perfect tense their uses and rules
The perfect tense is used to describe an action that was completed in the past or to convey the idea that an action has been completed. There are three main forms of the perfect tense: present perfect, past perfect, and future perfect.
1. Present perfect tense: This tense is used to describe actions that have been completed at some point in the past but have a connection to the present. It is formed by using the auxiliary verb "have" or "has" followed by the past participle of the main verb. For example:
- I have finished my homework.
- She has traveled to Italy.
2. Past perfect tense: This tense is used to describe actions that were completed before another action in the past. It is formed by using the auxiliary verb "had" followed by the past participle of the main verb. For example:
- She had already eaten dinner by the time I arrived.
- We had studied for the exam before we took it.
3. Future perfect tense: This tense is used to describe actions that will be completed at some point in the future before another action in the future. It is formed by using the auxiliary verb "will have" followed by the past participle of the main verb. For example:
- By this time next year, I will have graduated from college.
- They will have finished the project by the end of the week.
Rules for using the perfect tense:
- The auxiliary verb (have, has, had, will have) is used to form the perfect tense.
- The main verb is in the past participle form.
- The perfect tense is used to emphasize the completion of an action.
- The perfect tense can be used with time expressions such as "by the time," "already," "before," and "by" to indicate when the action was completed.