Tenses Questions
The past perfect tense is used to describe an action that happened 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 finished her homework before her friends arrived."
On the other hand, the present continuous tense is used to describe an action that is happening at the present moment or around the present time. It is formed by using the auxiliary verb "am/is/are" followed by the present participle of the main verb. For example, "I am currently studying for my exam."
In summary, the main difference between the past perfect and present continuous tenses is that the past perfect tense refers to a completed action in the past, while the present continuous tense refers to an ongoing action in the present.