Present Perfect Simple Tense

Study Notes

Has/have + past participle (e.g., I have written, she has eaten)
Verb forms:
- Positive: Subject + has/have + past participle
- Negative: Subject + has/have + not + past participle
- Question: Has/have + subject + past participle?

To describe an action that started in the past and continues up to the present moment:
- I have been studying English for three years.
To describe an action that happened at an unspecified time in the past and has a connection to the present:
- I have never seen that movie.
To describe an action that has a result in the present:
- I have just finished my homework.
To describe an action that has a connection to a specific point in the past:
- I had studied English for three years by the time I moved to the US.

Used with time expressions that indicate a connection to the present:
- since, for, just, already, yet, so far, up to now, recently
- Example: I have been working on this project for three months.

The present perfect simple is formed using has/have + past participle (e.g., I have written, she has eaten)
Verb forms:
- Positive: Subject + has/have + past participle
- Negative: Subject + has/have + not + past participle
- Question: Has/have + subject + past participle?

Describes an action that started in the past and continues up to the present moment
- Example: I have been studying English for three years
Describes an action that happened at an unspecified time in the past and has a connection to the present
- Example: I have never seen that movie
Describes an action that has a result in the present
- Example: I have just finished my homework
Describes an action that has a connection to a specific point in the past
- Example: I had studied English for three years by the time I moved to the US

Used with time expressions that indicate a connection to the present
- Examples: since, for, just, already, yet, so far, up to now, recently
- Example sentence: I have been working on this project for three months

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