What is the primary function of the past perfect tense?

The past perfect tense is used to indicate that an action was completed before another action or point in time in the past. For example, 'She had already left when I arrived.'

How do you form the past perfect tense?

To form the past perfect tense, use the auxiliary verb 'had' followed by the past participle of the main verb. For example: 'had + past participle' (e.g., 'had gone', 'had finished').

Fill in the blank: 'They ___ (not/see) the movie before it was taken off the shelf.'

The correct past perfect form is 'had not seen'. The complete sentence is: 'They had not seen the movie before it was taken off the shelf.'

Choose the correct sentence: A) 'He had wrote a letter before he left.' B) 'He had written a letter before he left.'

B) 'He had written a letter before he left.' is correct. The past participle of 'write' is 'written', not 'wrote'.

Rewrite the following in the past perfect tense: 'She arrives at the party after I leave.'

The sentence in past perfect tense is: 'She had arrived at the party after I had left.'

Identify the mistake in this sentence: 'By the time we reached the restaurant, it had closed.'

'By the time we reached the restaurant, it had closed.' is correct. There is no mistake in the use of past perfect here.

Which of the following sentences uses the past perfect tense correctly? A) 'I had went to the store before it started raining.' B) 'I had gone to the store before it started raining.'

B) 'I had gone to the store before it started raining.' is correct. The past participle of 'go' is 'gone', not 'went'.

Complete the sentence: 'She said she ___ (finish) her homework before dinner.'

The correct past perfect form is 'had finished'. The complete sentence is: 'She said she had finished her homework before dinner.'