PRESENT PERFECT

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PRESENT PERFECT by Mind Map: PRESENT PERFECT

1. forms

1.1. Affirmative

1.1.1. subject + auxiliary + main verb

1.2. Negative

1.2.1. subject + auxiliary + not + main verb

1.3. Questions

1.3.1. auxiliary + subject + main verb

2. uses

2.1. to express an action that started and finished at some time in the past when time is not indicated

2.2. in the negative it can express an action that remains uncompleted

2.3. to express duration with for or since

2.4. to talk about an experience or accomplishment

3. auxiliaries

3.1. to have

3.1.1. third person: -he has(have) -she has(have) -it has(have)

3.1.2. first and second person: -I have -you have -we have -they have

4. time expressions

4.1. yet

4.2. just

4.3. already

5. examples

5.1. I have worked in sales

5.2. Mark has not finished his homework.

5.3. She has lived here since 2010.

5.4. He has never eaten meat.