SAT考试里的介词主要是考固定搭配。比如看这么一道题目： Wanda implored(A) Marco not to be jealous over(B) her work; she explained that because(C) she liked both Marco and her job, he would have to share(D). NO ERROR(E) 我们知道固定搭配应该是be jealous of,所以jealous后面的介词应该是of而不应该是over,答案选B.