felt / fell
felt: past tense and past participle of the verb 'to feel'
felt：feel的过去式和过去分词形式。
Examples:
例句：
I felt better after I had a good dinner.
He hasn't felt this well for a long time.
美餐一顿之后我感觉好多了。
他很久没有感觉这么好了。
fell: past tense of the verb 'to fall'
fell：fall的过去式和过去分词形式。
Examples:
例句：
He fell from a tree and broke his leg.
Unfortunately, I fell down and hurt myself.
他从一棵树上掉了下来摔断了腿。
不幸的是，我摔倒了伤到了我自己。
