托福口语正式和非正式用语比较：
informal formal
freak out get very nervous
bomb do poorly
really good at quite skilled at
learn tricks develop strategies
ace perform well
a clue knowledge
lucky fortunate
cool calm
buddies classmates
flunk fail to give correct answers
上述就是托福口语正式和非正式用语比较，这些词汇看似很简单，但是要真正的弄清这些单词的用法还是需要考生真正的努力去钻研。
