一个好主意英语怎么说

"A good idea" 英文表达为 "a good idea"。

其来源为英语中的固定短语，表示一个有益或有用的想法。

例句1: "That's a good idea. Let's try it out." (那是个好主意。让我们试试看。)

例句2: "I have a good idea for the company's next marketing campaign." (我有一个公司下一个营销活动的好主意。)

例句3: "He had a good idea, but it didn't work out in practice." (他有一个好主意，但在实践中并没有奏效。)