在上面的例子中我们发现，对于比较常常会将第二部分的比较词进行舍去。常见的省略形式之一是将比较的第二个所有格后的名词省略：

◆ My car is bigger than Brian’s [car].

◆ My car is bigger than Brian’s [car].

◆ My car is bigger than the Smiths’ [car].

◆ My toes are longer than Brian’s [toes].

◆ My toes are longer than the Smiths’ [toes].


对于省略我们也可以将比较第二部分中的动词，词组，甚至一整个句子省略，当然前提是不会造成歧义。

◆ Whereas I drink 2 quarts of milk a day, my friend drinks 3 [quarts].

◆ I walk faster than Brian [walks].

◆ I walk as fast now as [I walked] when I was younger.


而有时为了避免产生歧义我们也会加入助动词，如be ,do 和have 等：

◆ Ambiguous: I like cheese more than Yvette. (Yvette could be subject or object.)

◆ Right: I like cheese more than Yvette DOES. (= than Yvette likes cheese)

◆ Right: I like cheese more than I DO Yvette. (= than I like Yvette)


而在GMAT考试中，有时也容许不需要的助动词的存在：

◆ Right: Apples are more healthy to eat than caramels.

◆ Right: Apples are more healthy to eat than caramels ARE.

所以在考试中，我们不要因为多余的助动词而排除了正确的选项。