You can tell him about your fellings by writng him a letter

问题描述:

You can tell him about your fellings by writng him a letter
fellings writng 这两个词为什么要加ing?

不是fellings,是feelings [常用复]感情; 心情; 情绪
by 是介词,介词后出现动词时一般改为v-ing 形式,否则,没法作介词宾语那feelings 为什么不用原型feel?feel 是动词, feelings 是名词。 名词feelings本身就有ing再说哪有用动词作介词about 的宾语的呀!