I'm very upset and don't know what to do.
你先通读一遍所有的单词明白大概的意思,然后再大胆地试着把每个单词拼起来就好啦,像这里的'I'm"就是肯定要放在句首的,upset是沮丧伤心的意思,连起来就是“I'm upset” 我很沮丧,"don't know what to do"不知道该做什么,中间用剩下的“and"连接就是一个句子啦.