首先要从汉意，英文拼写，读音，形式变化上分清楚，然后再从用法上分清楚。
feel v. 觉得，感觉，摸起来，认为
fall. v.倒塌，跌倒，掉落
n. (美式）秋天
原形，过去式，过去分词，现在分词，三单形式直观图：
feel的用法
① feel adj.
② feel adv.
③ feel sb/sth do/doing
④ feel it adj. (for sb) to do
feel it adj. that从句
⑤ feel like n
feel like doing=want to do=would like
to do 想做某事
feel like that从句
⑥ feeling n. 感情，感觉 (pl) feelings
