My Japanese student asked me the following questions. His English level is not that good so I'm wondering about how to give him an answer that will help him understand more easily.
1)If you can say "on the weekend" then can you say “on next weekend” in “the seminar is taking place next weekend”? If not then why not?
2)Why do you say “The seminar is taking place this weekend” instead of “this seminar has taken place this weekend”? Is “the staff” the subject if so does that mean “the staff is taking place this weekend”?
I'm not sure about the 1st question myself beside it just not being common to add "on" when it comes to adding "next/last/etc" in front of the word "weekend".
As for the second one, "to be taking place this weekend" and "has taken place this weekend" are obviously different. But I'm not sure how to explain this, specifically when it comes to the subject and the tense.
Any help will be deeply appreciated.