Dàjiā hǎo, wǒ shì Benny! Wǒ shì shìjiè shàng zuì shòu huānyíng de Zhōngwén lǎoshī (I am the most popular Mandarin teacher in the world!) Jīntiān wǒmen huì xuéxí yī gè fēicháng yǒuyòng de cí ”think.” You guys probably have learned think as “juéde” or “rènwéi” long time ago. And you also probably think that “I thought” is “wǒ juéde le” while “I don't think so” is “wǒ bù juéde.” Well, I would say they are both wrong! Let me tell you how we actually use “think.”