GMAT语法主谓一致之number题是GMAT语法主谓一致结构中的第七个考点，与之前的考点相比也是比较简单的部分，希望通过小编的讲解大家对这类题型能够了解。
一、主谓一致中的a number of 与 the number of题考点解析。
Number题实际上是考大家两个结构，即“a number of+复数”和“the number of+单数”。“a number of”译为“大量的”，所以带复数可数名词。而“the number of”译为“……的数量”，后面加单数名词。这两种结构长容易混淆，所以大家背熟就可以了。
二、例题解析。
In the last few years, the number of convicted criminals given community service sentences, which allow the criminals to remain unconfined while they perform specific jobs benefiting the public, have risen dramatically.
(A) sentences, which allow the criminals to remain unconfined while they perform specific jobs benefiting the public, have
(B) sentences, performing specific jobs that benefit the public while being allowed to remain unconfined, have
(C) sentences, performing specific jobs beneficial to the public while they are allowed to remain unconfined, have
(D) sentences which allow them to remain unconfined in their performing of specific jobs beneficial to the public has
(E) sentences allowing them to remain unconfined while performing specific jobs that benefit the public has
答案：E
解析：在做题之前，大家一定要学会简化题目，上题中“In the last few years”表明时态应该是现在完成时。介词加名词“convicted criminals”省略不读，两个逗号之间的插入语“which allow the criminals to remain unconfined while they perform specific jobs benefiting the public”省略不读，剩下的部分是“In the last few years, the number of community service sentences ____ risen dramatically.”因为前面主语是“the number of community service sentences”，所以谓语动词应该是单数，我们对比选项应该选用谓语动词“has”，而不是“have”。所以，排除选项A/B/C。选项D和选项E对比发现，区别在于选项D“which allow”和选项E中“allowing”，在GMAT语法考试中，“which”要和“，”和介词一同出现。因为选项D中不符合规则，所以排除，正确选项是E。
GMAT语法主谓一致之number题就暂时为大家讲解这些，利用这一考点，大家能排除选项中明显错误的选项，提升选项的正确性。希望前程百利小编的GMAT备考方法能够对大家有帮助。更多GMAT语法主谓一致考点小编还会继续为大家整理。
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