请高手帮我解释下这两句话的不同!谢谢了if i had told those impossible to you,you should make a very big mistake.if i had told those impossible to you,you should have made a very big mistake为什么if从句都是一样的,主句可以

请高手帮我解释下这两句话的不同!谢谢了if i had told those impossible to you,you should make a very big mistake.if i had told those impossible to you,you should have made a very big mistake为什么if从句都是一样的,主句可以 Baby One More Time请帮我解释这句话的意思!谢谢了```Baby One More Time请帮我解释这句话的意思!谢谢了``` 请高手帮我解个微分方程谢谢了, 请高手帮我解个微分方程谢谢了 I worked very hard happy是什么意思啊哪位英语高手帮我解释下谢谢了···· Soon,I'll be back in your arms.什么意思请各位高手帮我翻译下 先谢谢了 请高手解释下各行代码的意识 谢谢了 古文翻译高手请帮我翻译柳宗元的,谢谢 请高手帮我翻译谢谢 请英文高手来帮我看看这句话在戒指上的含义though i speak with the tongues of me and of angels and have not charity i am become as sounding bra请问这句话镶嵌在戒指上是什么意思,谢谢了 什么是毛利率（1+毛利率）是什么意思?请高手帮我解释下谢谢! I do not to respect and fear anyone请 高手帮我翻译这句话的意思 塑料薄膜的分类以及不同种类的性质?请教高手呀,帮我解答一下!急呀!谢谢了 请高人帮我解释 姓名付紫萱的含义,先谢谢了! 谁能帮我看看 这句话是什么意思?高手请帮我下 谢谢了空气是浸了水的海绵,能挤出水来,不是我要的氧气,不过习惯呼吸. 麻烦哪位高手能把这句话的图纸帮我画出来,在这里谢谢了. 请高手帮我用英语具体的解释一下这个短语好吗?谢谢!Run out of gas 我想求具体的英语解释,越详细越好,谢谢! 请帮我解释这三个词语的意思谢谢,