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Persistenceisthecommontraitofanyonewhohashadasignificantimpactontheworld.为何thecommontrait用the,而asignificantimpact用a

题目详情
Persistence is the common trait of anyone who has had a significant impact on the
world.为何the common trait 用the,而a significant impact用a
▼优质解答
答案和解析
the:表特指.特指"对世界产生重大影响的人的共同特点" .
have a/an +形+impact on ..."对...产生...的影响",这是固定搭配,impact为单数,因此前面要用a.