learning English is very interesting 为什么learn要加ing

learning English is very interesting 为什么learn要加ing learning english为什么learn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 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 he thinks reading is interesting 为什么read要加ing? I find it interesting to learn English.为什么it后面不可加is. Learning English is very interesting.（改为同意句）（ ）（ ）（ ）to lear it is very important to learn English中可以用learning么