有几个问题,帮忙解释一下下面的句子真正的含义(高手们一定知道) 1、It's raining cats and dogs! 2、What's cooking? 3、I'm tired up right now. 4、I'll give you a ring yesterday. 5、The English test was a piece of cake! 6、The English test was no picnic. 用中文,例如第一个原意是下了许多猫和狗,但真正的意思是下了倾盆大雨.相信大家都知道,不知道的别乱答.