十一月的机经刚分享完，紧接着十二月的GMAT机经就整理出来了，为大家分享机经，希望大家能感受到这股暖意，并把它化为能量，在GMAT考试的道路上勇往直前。

　　13. 比较的用法greater than

　　Always use “than” with a comparative form.

　　14. which 指代

　　Manhattan SC

　　Chapter 6 Modifiers

　　Essential vs Non-essential Noun Modifier

　　Use which if the modifier is non-essential, use that if the modifier is essential.

　　In some circumstances, you do not have a simple choice between “which” and “that” (e.g. when “which” is used with a preposition). However, you should still obey the comma rule: use comma with non-essential uses of which, but not with essental uses of which.

　　Non-essential: This mansion, for which I yearn, is owned by the Lees.

　　Essential: The mansion for which I yearn is owned by the Lees.

　　Which vs The Present Participle –ing

　　Use WHICH only to rer to the noun immediately preceding it – never to rer to an entire clause.

　　The –ing form is very flexible. It can modify nouns directly, can modify verbs and ther subjects(表伴随) and can even modify an entire clause(表结果)。

　　12月16日更新Chapter 12 Modifiers: Extra

　　More on Relative Clauses vs Participles

　　Present participles get their tense from the main verb in the sentence.

　　PAST: I saw a man cleaning the steps. (“cleaning” takes place in the past)

　　PRESENT: I see a man cleaning the steps. (“cleaning” takes place in the present)

　　FUTURE: I will see a man cleaning the steps. (“cleaning” takes place in the future)

　　If you want the “cleaning” to take place at a different time from the “seeing”, then use the relative clause, not the present participle.

　　e.g. The rate of language extinction is accelerating, a tendency ultimately culminating in the survival of just a few language, according to some.错

　　The rate of language extinction is accelerating, a tendency that will culminate in the survival of just a few language, according to some.√

　　(句子的main verb“is accelerating”是present time，但ulminately说明culminate发生在将来)

　　以上就是关于GMAT机经的全部内容，考生朋友可以有选择的看看，最后需要提醒各位的是，GMAT机经虽然会对我们解题有所帮助，但是在考场中即使题目很像也要避免秒选，最后祝大家都能考出好成绩。

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