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1.That's the third time he's won the award in this field.

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1.That's the third time he's won the award in this field.
Yes,he ____ his maximum potential in the past decade.
A.explored
B.is exploring
C.has been exploring
D.had explored
疑问:请问为什么in the past .多用于现在完成进行时,has been doing是什么时态 感觉像被动时态似的
2.HARVARD is a college that claims to teach students honesty,which is——a recent cheating disgrace surrounding it has come as a surprise.
A.how B.what C.why D.because
3.Believe it or no,Sam.I have been chosen as captain of the school football team.
——congratulations!
A.That's something B.you did a good job
3.A “这有点儿意思” B“干得好!”
别人告诉你被选为队长,我们的正确反映就应该是祝贺加鼓励,所以选B
2.选Why.哈佛是一个宣称教育学生城市的学校,这就是为什么最近它的一起欺骗行为让世人吃惊.根据意思应选C.
1.has been doing是现在完成进行时,现在完成进行时表示现在以前这一段时间里一直在进行的动作, 比一般完成时更加强调持续进行.“ in the past +时间段”,指的就是延续到现在的一段时间,通常需要和现在完成时连用