an expert in/at/on/with有什么区别?例子:1.an expert in/at teaching small children意思就是说an expert in和an expert at通用对吗?2.an expert in economics3.an expert on foreign affairs4.an expert with the needles
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![an expert in/at/on/with有什么区别?例子:1.an expert in/at teaching small children意思就是说an expert in和an expert at通用对吗?2.an expert in economics3.an expert on foreign affairs4.an expert with the needles](/uploads/image/z/9040141-37-1.jpg?t=an+expert+in%2Fat%2Fon%2Fwith%E6%9C%89%E4%BB%80%E4%B9%88%E5%8C%BA%E5%88%AB%3F%E4%BE%8B%E5%AD%90%EF%BC%9A1.an+expert+in%2Fat+teaching+small+children%E6%84%8F%E6%80%9D%E5%B0%B1%E6%98%AF%E8%AF%B4an+expert+in%E5%92%8Can+expert+at%E9%80%9A%E7%94%A8%E5%AF%B9%E5%90%97%3F2.an+expert+in+economics3.an+expert+on+foreign+affairs4.an+expert+with+the+needles)
an expert in/at/on/with有什么区别?例子:1.an expert in/at teaching small children意思就是说an expert in和an expert at通用对吗?2.an expert in economics3.an expert on foreign affairs4.an expert with the needles
an expert in/at/on/with有什么区别?
例子:1.an expert in/at teaching small children
意思就是说an expert in和an expert at通用对吗?
2.an expert in economics
3.an expert on foreign affairs
4.an expert with the needles
an expert in/at/on/with有什么区别?例子:1.an expert in/at teaching small children意思就是说an expert in和an expert at通用对吗?2.an expert in economics3.an expert on foreign affairs4.an expert with the needles
expert at:擅长=be good at,do well in
expert on:关于...方面的专家
expert in:熟练于...
擅长于 在某方面是专家 Mr. Dewey, you seem to be quite expert at chopsticks
In,强调专业性;At, 强调优势 On,强调特殊性; With,强调技巧。