watch -> watching 因为 like doing sth 固定用法：喜欢做某事. 再问： 那怎么改？ 再答： 正确的是： My brother doesn't like watching videos. 再问： How many chocolatedo you want ? Just a few.改错 再答： How many chocolates do you want ? Just a few how many 后接可数名词昨数，故 chocolate-> chocolates 再问： 可 chocolate是不可数名词 再答： chocolate 是可数名词，根据后面的 a few 可知
