1)think的意思是“想,认为”,表示一种思维活动,常带一个作宾语的从句.如：I think your Chinese is very good.我认为你的英语很好. 2)want的意思是“要；想要；需要”,表示一种愿望和要求,常用于下列情况：(1)want sth.如：I want a book.我想要一本书. (2)want to do sth.如：I want to go there.我想去那. (3)want sb.to do sth.如：I want you to go there.我想让你去那.
