in the past 可以和现在完成时连用吗


We think of the same is the case here.

Just give you some perspective, this is the Reagan Library. Right in there is Air Force One.

This has been the site of Presidential debates on CNN in the past.

In addition to the smoke in the air, the air pollution, the stress of evacuating yet another evacuation zone.

You have people dealing with those rolling black outs as PG&E, Pacific Gas and Electric, catches so much wrath from the public.

Theyre shutting down huge swaths of their service area to try to prevent more fires from sparking out there in the wild lands.

They need to fortify something like 7,000 miles of vulnerable power lines in the state.

This year they managed 100 miles. Whoa. And there goes a (inaudible) bomber right on queue.


In the past是过去式,为什么可以使用现在完成时呢?


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