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09 Feb 2022, 00:12
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karlfurt
TAKEAWAYS From the question
1. Connect independent clauses either by-
a) Comma+ FANBOYS OR b) Semicolon
2. SINCE- The word since is used to refer to a point in time, not a period of time. Hence since the past decade in any case would be wrong. Since 2006 would be correct.
3. During the past decade- Use of present perfect: You would be right if past decade were actually a time period in the past; however it is not. The past decade indicates a time interval that started 10 years ago and the present moment is at the end of the 10 year span; the period is ending now.
4. The mixing of active and passive voice on two sides of a conjunction is allowed. See the following example ( from Manhattan SC guide):
5. Instead = On the contrary , but,- to show contrast.
6. Instead of = Replacement.
09 Feb 2022, 09:13
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Ahmed9955
Hey!
The present perfect tense gets used for an action (or effect) that starts in the past but continues to the present. So while it will still seem to cover a specific time period, the idea is that the time period hasn't yet necessarily come to an end. I know from your second question that this is something you're aware of, so really I think the thing to take away from this is the fact that during the past ______ is the sort of time marker that often requires present perfect (especially because of the word past--you'll often see the phrase over the past _____ paired with present perfect as well).
This leads to the second question: can you use since? Not exactly, but sort of. You can't say since the past decade, because unlike during and over, since doesn't pair as well with the word past. It could have said Starting a decade ago, but if you were to use since it would probably have to go something like Since 2011 or Since <some action in the past. Basically, since is idiomatically different from over or during, but it of course does still call for the present perfect much of the time it shows up.
10 Feb 2022, 08:59
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Ahmed9955
1) The phrase "during the last decade" implies a timeframe that started ten years ago and continues the present. Similarly, if I write, "For the last hour, Tim has been twiddling his thumbs instead of changing a dirty diaper," the phrase "for the last hour" implies that the action began an hour ago and continues into the present.
2) No. We use "since" when the time is a specific starting point in the past. But if we're talking about a longer interval that seems to continue into the present -- in this case, the last decade -- "during" makes more sense.
Put another way, we could write, "Since 2012, Tim has been running in circles in his front yard." Or we could write, "During the last decade, Tim has been running in circles in his front yard." Either way, Tim is very dizzy.
I hope that helps!
