It was no trouble.和It was not trouble.有什么区别?哪个是正确的表达?I have

It was no trouble是正确的是,因为trouble只能作名词或动词,no是形容词,后可接名词trouble,not 是副词,不可接名词.如果trouble是动词的话,与前面的was又重复了.idea前也不可用not.