Let's explore each in detail:

1. Present Continuous Tense:

   • Formation: Subject + "be" verb (am/are/is) + present participle (-ing form) of the main verb.
   • Usage: Describes actions or events that are happening at the present moment or around the current time.
   • Example:
     • She is studying for her exam right now.
     • They are playing basketball in the park.
     • We are having dinner at a restaurant tonight.

2. Past Continuous Tense:

   • Formation: Subject + "be" verb (was/were) + present participle (-ing form) of the main verb.
   • Usage: Describes actions or events that were in progress at a specific time in the past.
   • Example:
     • I was reading a book when the phone rang.
     • They were watching a movie at the theater yesterday.
     • She was cooking dinner while he was setting the table.

3. Future Continuous Tense:

   • Formation: Subject + "will be" + present participle (-ing form) of the main verb.
   • Usage: Describes actions or events that will be in progress at a specific time or during a specific period in the future.
   • Example:
     • We will be traveling to Paris next month.
     • They will be attending a conference tomorrow.
     • He will be studying for his exam all day on Saturday.

Key Points to Remember:

• Continuous tenses emphasize the ongoing nature of actions or events.
• They are formed using a "be" verb (am/are/is, was/were, will be) followed by the present participle (-ing form) of the main verb.
• The time frame of the action or event determines the tense used (present, past, or future).
• Continuous tenses often include time expressions to specify the duration or timing of the action.
• These tenses are especially useful for describing ongoing activities, temporary situations, or actions happening at a specific time.

By understanding the continuous tenses, you can effectively communicate ongoing actions or events at different points in time, whether it's the present, past, or future.