托福词汇常考总结：校园词汇（3）

Assumpttion: Dr. Peterson isn't an associate professor, is she?
　　Problem: If Dr. Peterson is an associate professor, I used the wrong title in my letter to her.
　　audit v. to attend a course without credit 旁听 
　　Example: It usually costs as much to audit a course as to take it for credit.
　　Suggestion: You could audit the course if you don't need the credit.
　　Assumption: You mean you are auditing the course?
　　Problem: If I audit the course, I won't get credit for it.
　　bear n. a difficult class 难以对付的课程 
　　Example: That computer science course was a bear.
　　Suggestion: I heard that Dr. Young's class is a real bear, so I would advise against it this semester.
　　Assumption: Your roommate thought this class was a bear?
　　Problem: Two of the classes I am in are real bears.
　　be behind v. to be late; to have a lot of work to do 迟到；课业负担重 
　　Example: I am behind in my physics class.
　　Suggestion: You are behind in your psychology class so you should study.
　　Assumption: Bill is behind?
　　Problem: I can't go to the party because I am behind in my classes.