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Tue 17 Jan, 2017 04:31 am
I would like to ask you a question. If I want to say that a situation/an activity happened in a certain place, without mentioning the time of this situation/activity, can I use Present Perfect?
For example, can I say:
“Similar experiments have been conducted in the USA.”
Or rather:
“Similar experiments were conducted in the USA.”
@Nat093,
Yes, you CAN use present perfect. It requires two verbs. So use "have been conducted."