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SITUATION ONLY |
ACTION ONLY |
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Finished and not connected to the present (past only) |
PAST TENSE I was an engineer at X company 5 years ago. |
PAST TENSE I worked as an engineer 5 years ago. |
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Already finished and connected to the present (past + present) |
PRESENT PERFECT has/have + been I have already been an employee of X company, so I can help you. I know their processes. [Experience] |
PRESENT PERFECT has/have + past participle I have worked as an engineer before, so I can help you. |
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Not yet finished and connected to the present (past + present) |
PRESENT PERFECT has/have + not/never + been I have never been an employee of X company, so I can’t help you. I am not familiar with their processes. [Experience] |
PRESENT PERFECT has/have + not/never + past participle I have never worked as an engineer, so I don’t have any idea how to do this. |
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Started in the past and continues to the present (past + present)
|
PRESENT PERFECT has/have + been I have been an engineer since 2000. |
PRESENT PERFECT CONTINUOUS has/have + been + ing I have been working at X company as an engineer since 2000. |
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Started in the past and recently finished, and connected to the present (past + present)
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not used |
PRESENT PERFECT CONTINUOUS has/have + been + ing I am so tired because I have been working on this design for 5 hours, and my engineering team and I just finished 5 minutes ago. My head hurts. |
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