Form
Simple Present | Present Perfect Progressive |
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infinitive (3rd person singular: infinitive + 's')
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form of 'have' + been + ing-form
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Exceptions | |
Exceptions when adding 's':
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Exceptions when adding 'ing' :
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See also explanations on Simple Present and Present Perfect Progressive
Use
We use Simple Present for general statements about the present and for actions taking place regularly in the present. We use Present Perfect Progressive to express how long an action has been going on.
General statements (when/how often) or how long already?
Do you want to make a general statement about the present, e.g. say when or how often an action usually takes place? Or do you want to express, how long an action has already been going on?
Simple Present | Present Perfect Progressive |
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general statement, when / how often
I write a letter every day. |
how long already
I have been writing for an hour. |
Signal Words
Simple Present | Present Perfect Progressive |
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Note: The signal words for Simple Present are the same here as for Present Perfect in the explanation on confusing tenses - Present Perfect Simple/Present Perfect Progressive. If we use these signal words for Simple Present, we want to know how often an action usually takes place in the present (not how often it has taken place so far). There is a difference, because you can ask someone how often he plays tennis (in general) or how often he has played tennis (so far).