一般而言，转折后的内容常常是语义的重点，命题者常对转折处的内容进行提问。转折一般通过however, but, yet, in fact等词或短语来引导。强对比常由unlike, until, not so much…as等词或短语引导。命题者常对用来对比的双方属性进行考查。 比如文章中说甲具有X属性，但乙与甲不同，问乙有何属性?答曰：非X属性。
例1. Some observers say the fault is with the young people…. But that’s a condemnation of the students as a whole…. Others blame the state of the world… But disappointed graduates are learning that it can no longer absorb an army of trained twenty-two-year-olds, either.
Q：According to the passage the problems of college education partly arise from the fact that _______ .
(A) society cannot provide enough jobs for properly trained college graduates.
(B) High school graduates do not fit the pattern of college education.
(C) Too many students have to earn their own living.
(D) College administrators encourage students to drop out.
例2 … Unlike other lawbreakers, who must leave the country, commits suicide, or go to jail, computer criminals sometimes escape puni
Q： It can be conduced from the passage that ________ .
例3 Beauty has always been regard as something praiseworthy. Almost everyone thinks attractive more respectable occupations. Personal consultants give them better advice for finding jobs. Even judges are softer on attentive defendants(被告)。But in the executive circle, beauty can become a liability.
Q：The author writes this passage to _______ .
(A) discuss the negative aspects of being attractive.
(B) Give advice to job-seekers who are attractive.
(C) Demand equal rights for women.
(D) Emphasize the importance of appearance.
例4. The sensation of sound involves a verity of factors in addition to its peak level. …In regular programming the intensity of sound varies over a large rage. However, sound levels in commercials tend to stay at or near peak level.
Q: Commercials create the sensate at the highest sound level.
(A)TV stations always operate at the highest sound level.
(B)Their sound levels are kept around peak level.
(C)Their sound levels are kept in the middle frequency ranges.
(D)Unlike regular programs their intensity of sound varies over a wide range.