be experienced in sth和have experience in sth区别

be experienced in和be experienced at有什么区别? be experienced in和be experienced at有什么区别? be experienced at/in的区别 be experienced in sth和have experience in sth区别 be talented in还是at 我们老师说和experienced的用法一样be experienced in doing sth是吧? 我在参考书看的是be experienced in+doing sth,be experienced at+sth,但是在老师发的一个教案上是be experienced in+sth,请问怎么回事 have experience in 和be experienced in doing 都是在（做）…方面有经验 但具体有什么区别呢 what will our country be l() in the 21st century?填l开头的单词 He is t____ to be one of the greatest pianists in the 21st century What do you consider to be the three greaest challenges facing China in 21st century? In order to be successful as an engineer ,she had to become ___at mathematics.A.proficient B.outstanding C.prominent D.experienced 请问是sb interested in sth还是sb be interested in st请问是sb interested in sth还是sb be interested in sth have experience in doing 的in可以省略,be experienced in 的in可以吗如题,为什么in可以省略.什么情况能省 什么情况不能省,能不能举例一下 be experienced at doing sth有这个词组吗 be experienced of doing sth有这种形式吗 life in the 21st century will be different from life in the 20th century是什么意思 born in november 1st 我的句子是否有语法错误?翻译一下.it is necessary that you should be experienced in work.it is necessary that you should be engaged in doing housework.