题目内容：

A game is always popular between the people,that is"lose once you get serious"中that is做什么成份

优质解答

that is 在这里是插入语,可以用 i.e.、 namely 或 in other words 来取代.意思是“即"、“也就是”、“换句话说”等.如这个句子还可以写成：A game is always popular between the people,i.e."lose once you get se...