1 Explain usage and formation of Present Simple tense (affirmative, negative and interrogative) and make up sentences

7.Explain usage and formation of Present Perfect Continuous tense (affirmative, negative and interrogative) and make up sentences
The Present Perfect Continuous tense is used to describe actions that started in the past, continued up until the present, and may still be ongoing. It is formed with the present tense of "to have" (have/has) followed by the present participle (-ing form) of the main verb.
Affirmative: Subject + have/has + been + verb-ing
Example sentences:
I have been studying for two hours.
She has been working in the garden all morning.
They have been traveling for six months.
Negative: Subject + have/has + not + been + verb-ing
Example sentences:
I have not been watching TV all day.
He has not been feeling well lately.
We have not been practicing enough for the competition.
Interrogative: Have/Has + subject + been + verb-ing?
Example sentences:
Have you been exercising regularly?
Has she been attending the meetings regularly?
Have they been working on the project together?
Note: The Present Perfect Continuous tense can also be used with time expressions such as "since" and "for" to indicate the duration of the action. For example, "I have been studying since this morning" or "She has been working in the garden for three hours."


8.Explain usage and formation of Past Perfect tense (affirmative, negative and interrogative) and make up sentences
The Past Perfect tense is used to describe an action that was completed before another past action. It is formed with the auxiliary verb "had" plus the past participle of the main verb.
Affirmative: Subject + had + past participle of the verb Example:
I had finished my work before I went to bed.
Negative: Subject + had not + past participle of the verb Example:
She had not studied enough for the test, so she failed it.
Interrogative: Had + subject + past participle of the verb Example:
Had you ever been to New York before your last visit?
More examples:
By the time we arrived, they had already left.
The plane had landed before the storm began.
They had never seen such a beautiful sunset before.
Had he finished the book before the movie came out?
She had lost her passport before she even left for the airport.