problem共5篇 no problem的三种用法no problem的三种用法：一是别人向自己发出请求时，用它来表示“... have problem to do还是doinghave problem to do和have problemdoing都可以，have problems d... have problem doing还是problems英语中常用短语have+problems+doing来表示做某事有困难，而不是用... issue和problem区别issue是问题，议题。environmental issues，环境问题。economic ... issue和problem的用法区别problem指客观上存在的、难以处理或难以理解的问题。issue多指意...
