题目内容：

I am looking forward to hear from you
如题,如果不对的话,那么 I look forward to hearing from you
关于第二句话我还有一个小白的语法问题（汗.）不是说 to 后面都跟原型吗为什么 是 to hearing from you 而不是 to hear from you

优质解答

I am looking forward to hearing from you.是正确的.
因为这里的to作为介词用.
to do something的to是作为动词不定式.