That's not fun?及 That's no fun?

问题描述:

That's not fun?及 That's no fun?
1.请问 That's not fun.及 That's no fun.哪一句子对?
2.那语法上怎麼解释?

都可以 不过that‘s not fun 更好更口语 因为老外经常说,意思就是:这不好玩.
语法就是主tha 系is 表not fun 或者说主谓补一个意思