professor Milliken,one of the world's leading experts on the evolution of insects,is scheduled to come to Beijing in July.after he stays here for a few days,i am to accompany him on a tour of Yunnan.为什么one of the world's lesding experts 为啥
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professor Milliken,one of the world's leading experts on the evolution of insects,is scheduled to come to Beijing in July.after he stays here for a few days,i am to accompany him on a tour of Yunnan.为什么one of the world's lesding experts 为啥
professor Milliken,one of the world's leading experts on the evolution of insects,is scheduled to come to Beijing in July.after he stays here for a few days,i am to accompany him on a tour of Yunnan.为什么one of the world's lesding experts 为啥错
professor Milliken,one of the world's leading experts on the evolution of insects,is scheduled to come to Beijing in July.after he stays here for a few days,i am to accompany him on a tour of Yunnan.为什么one of the world's lesding experts 为啥
语法上没错!
不过, 如果上文没有给出这个领域有哪些专家, 最好是：
a leading expert of the world
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好像没错啊
错在介词on.
expert in
expert at
是较为常见的两个短语。be expert in 意思是“某方面的专家”,而be expert at和be good at的意思一样，“擅长于...”
介词on不多见。顺便再次体会下三个介词的差异，at最小,on较大,in最大，或者另一种说法是，at点，on线，in面。拿时间来做个例子。at six（一个时刻点）...
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错在介词on.
expert in
expert at
是较为常见的两个短语。be expert in 意思是“某方面的专家”,而be expert at和be good at的意思一样，“擅长于...”
介词on不多见。顺便再次体会下三个介词的差异，at最小,on较大,in最大，或者另一种说法是，at点，on线，in面。拿时间来做个例子。at six（一个时刻点）, on Monday（具体某一天）,in March(月份，年等)。自己体会下。
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