prove to be difficult是什么意思?

prove to be difficult是什么意思? 用prove to be词组造句 may yet prove to be怎翻译? The Incas _____(prove) to be great at building things. His advice (prove)to be wrong after two weeks. prove to be 和turn out to be有什么区别 The advance theory he has stuck ___ us that earthquakes can be forecast.A.to proveB.to prove to C.to proving to D.which to prove prove difficult 和 prove to be difficult 有什么区别?The operation proved to be difficult.Rescue operations are proving difficult. it did not prove to be a problem为什么用did?不用was怎么区分?it did not prove to be a problem 这不算什么问题 turn out 和prove 后面都能加to be ,to do 么 Perhaps this book will prove to be of use to you in your studies的语法 prove的用法和例子,proved to be wrong.= proved wrong.是不是？ they prove to be of much effect in the education of people.为什么有of啊 有没有这种说法 I prove my advice to be wrong 假如没有,为什么. 他的想法证明是对的 prove to be 翻译 Nothing can be better than take actions to prove everything 这句话对吗同上 ________ to be correct his theory is now well accepted.(prove)动词填空 he prove to be a man with a strong will.will是做什么的