I think （listening) to English songs may help you improve your English.括号中为什么要用+ing的形式,
问题描述：
I think （listening) to English songs may help you improve your English.
括号中为什么要用+ing的形式,
答
动名词短语作主语。
答
后面是完整的句子，动词作主语就要用进行时
答
I think （listening) to English songs may help you improve your English.这是宾语从句,省略了that.完整句子是I think that listening to English songs may help you improve your English.that 之后为完整的句子,listening是动名词做宾语从句的主语.