8.Explain usage and formation of Past Perfect tense (affirmative, negative and interrogative) and make up sentences.
Sure! The past perfect tense is used to describe an action that was completed before another action in the past. It emphasizes the completion of the first action before the second action happened. Here are the formations and some examples of the past perfect tense:
Affirmative: Subject + had + past participle of verb
I had finished my homework before I watched TV.
She had already eaten breakfast before she left for work.
We had seen that movie before, so we knew the ending.
Negative: Subject + had + not + past participle of verb
I had not seen my friend for years before we met last week.
She had not visited that city before, so she was excited to go.
They had not completed the project yet when the deadline arrived.
Interrogative: Had + subject + past participle of verb?
Had you finished your dinner when the guests arrived?
Had she received the email before she left for vacation?
Had they studied for the exam before the teacher gave them the review sheet?
In all cases, the auxiliary verb "had" indicates the past perfect tense, and the past participle of the verb (often ending in -ed) indicates the completed action.
Overall, the past perfect tense is useful for talking about the order of events in the past and for indicating that one action was completed before another. It's often used in conjunction with the past simple tense to provide context and detail about the timing of past events.
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