Present perfect or past simple?
I finished the course a month ago.
I cooked dinner.
We saw Jamie yesterday.
Notice that we naturally use time expressions with the past simple – yesterday, amonth ago, 2005, etc. Remember that when we use one of these words or phrases, we do not use the present perfect tense:
I’ve been to the USA in 2008.
I went to the USA in 2008.
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