【if ever】ifany和ifever用法有哪些区别呢?

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【答案】 if any:若有的话
　　Examples:
　　1.We'll let you know if any vacancies e up.
　　一有空缺我们就通知你.
　　2.If any oil gets on the car tyres,it will perish them.
　　汽车胎沾上油就会毁坏.
　　3.Please correct my mistakes if any(=if there is any mistake).如果有的话,请改正我的错误.
　　if ever:conj.如果有过的话(如果发生过的话)
　　Examples:
　　1.That was a fine meal if ever there was one!
　　那确实是一顿丰盛的饭.
　　2.She seldom,if ever,goes to the cinema.
　　她难得看电影.
　　3.The island is seldom,if ever,visited by ships.
　　这个岛难得有船停靠.(=if the island has ever been visited by ships)
　　4.He is a great musician if ever there was one.
　　如果曾经有过伟大的音乐家,那他就是一个.