learning english为什么learn要加ing

learning english为什么learn要加ing learning English is very interesting 为什么learn要加ing in learning English 为什么learn是ing形式 Do you have trouble learning English?这里learn为什么+ing? my english learning为什么要加ing?什么情况下词汇要加ING? i must change my way of learning English .learning 为什么要加ing what is the sercte to language learning.为什么learn要加ing He said learning English is important.learn为什么用ing形式啊 是不是从句也 Some strategies for learning English 这句里的learning 为什么要带ing? I had many difficulties learning English（为什么用ing） tony did not find learning english easy此处learn为什么要用动名词形式 learning English与learn English的区别