請看兩道題：

(1) It is not who is right but what is right _______ is of importance.

A. which                  B. it                        C. that                     D. this

答案為C。此題考查it is…that…這一強調句式，被強調的是not who is right but what is right，全句意為：重要的不是誰是對的，而是什么才是對的。

有時考查not…but…的同義結構…rather than…與強調結構的綜合運用。如：

(2) It is what you do rather than what you say _______matters

A. that                     B. what                    C. which                  D. this

答案為A。被強調成分為what you do rather than what you say，全句意為：重要的是看你怎么做，而不是看你怎么說。