Present Perfect Tense
We use the perfect tense when the actions just happened, when we talk about repeated actions that happened lately, actions of undetermined time and when we use superlative forms.
We can use the following expressions of undetermined time:
- in this month
- in the last few years
- during this week
The auxiliary verb for this tense is “to have” conjugated according to the pronoun that we use as a subject.
The grammar structure is as follows:
Subject + Auxiliary Verb + Verb in Past Participle + Complement
For the questions the structure changes and we have to use some words that emphasize the questions, the affirmative answers and the negative answers.
- Ever, yet (for questions only)
- Never, yet (negative answers only)
- Already (negative answers only)
- Just (emphasizes the statements)
The grammar structure for the questions is as follows:
Auxiliary Verb + Subject + Verb in Past Participle + Complement + Question Mark
We can also use the words “since” and “for“. We use “since” with the starting date. We use “for” with period of time.