in the past few years是不是现在完成时的标志,现在完成时的标志还有那些?

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in the past few years是不是现在完成时的标志,现在完成时的标志还有那些?
in the past few years是不是现在完成时的标志,现在完成时的标志还有那些?

in the past few years是不是现在完成时的标志,现在完成时的标志还有那些?
是,already ,yet ,since ,so far(到目前为止) up to now(到目前为止) recently.in the past /last years在过去的几年中it is the first/second.time sb +现在完成时如,it is my first time I have been here.