句子結構比較複雜時，尤其是當被強調成分比較複雜時，有的同學們就不能識別句子所用的強調結構，從而不能正確作出選擇。如：
It was lack of money, not of effort, that defeated their plan.
他們的`計劃受挫，原因是缺少錢而不是沒有盡力。
It was more in sorrow than in anger that he criticized his former colleague.
他批評以前的同事，並非出於氣憤而是為他惋惜。
It is the protection for the trees that really matters, rather than how many trees are planted.
真正重要的在於對樹木的保護，而不在於種了多少樹。
As far as hes concerned, its not doing something wrong that matters, but not being caught doing something wrong,
就他而論，重要的不是做錯事，而是做錯事不被抓住。
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 isthat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，而是什麼才是對的。