He said that if he had a million dollars ,he would give it to the zoo这句话有没有语法错误?
答：这句话没有语法错误.
他的原话是：If i have a million dollars,I will give it to the zoo.
别想多了,这里没有虚拟语气,只是直接引语改为间接引语.
如果有上下文,可能没有表达出他想说的意思.比如他的原话是：
If I had a million dollars,I would give it to the zoo.则为虚拟语气的句子,表示“如果我（将来）有10000美元的话,我就将它捐给动物园.
这说的是空话,气话,因为没有100000美元,所以才这么说,就象说：如果我中了100000元的彩票的话,我就分给你一半!
上面的这句话,再转述,就不一样了：
He said that if he had had a million dollars,he would have given it to the zoo.