题目内容：

I'll help you with your English homework only if help me to study for the math test.
请问这道题哪错了

优质解答

前半句没错,
但是你用only if 引导一个条件从句,所以后面是个完整的句子.而你这个句子没主语哦.
我的建议是：
I'll help you with your English homework only if you help me with the math test.
不懂的可以再问,很乐意解答.