present perfect

Front

What is the present perfect tense?

Back

The present perfect tense is used to describe actions that occurred at an unspecified time in the past and are relevant to the present.

Front

How is the present perfect tense formed?

Back

The present perfect tense is formed using 'have' or 'has' + the past participle of the verb.

Front

When do we use 'have' in the present perfect tense?

Back

We use 'have' with the subjects I, you, we, and they.

Front

When do we use 'has' in the present perfect tense?

Back

We use 'has' with the subjects he, she, and it.

Front

What is the past participle of regular verbs?

Back

The past participle of regular verbs is formed by adding -ed to the base form of the verb.

Front

What is the past participle of irregular verbs?

Back

The past participle of irregular verbs varies and must be memorized, as it does not follow a specific pattern.

Front

How do you form a negative sentence in the present perfect tense?

Back

To form a negative sentence, add 'not' after 'have' or 'has' (e.g., 'I have not seen').

Front

How do you form a question in the present perfect tense?

Back

To form a question, invert the subject and 'have/has' (e.g., 'Have you finished?').

Front

What is the difference between 'have done' and 'have not done'?

Back

'Have done' indicates completion of an action, while 'have not done' indicates that the action has not been completed.

Front

What does 'ever' mean in the present perfect tense?

Back

'Ever' is used in affirmative sentences to refer to any time up to now (e.g., 'Have you ever been to Paris?').