Common ETS Goof: 1. When one word modifies another word, the two should be next to each other. Solution: You can change a misplaced modifier into a legal sentence by changing a phrase into a clause.
2. Using Improper Pronouns Pronoun Rule 1: Each pronoun must agree with the noun it replaces.单复一致等等 Pronoun Rule 2: Each pronoun must refer directly and unambiguously to the noun it replaces.他，or 它 or 它们到底指哪个
3. Changing the Verb Tense The verb tense of a sentence should remain consistent. If the tense is established somewhere in the sentence, there's rarely a need to change it. 查看未划线的部分来参考时态的选择 最基本的三个时态：过去时(past tense)，现在进行时(present tense)，将来时(future tense) 派生的时态： 过去完成时(present perfect tense) - 用来表示在时间上发生的比过去时更早 现在完成时(past perfect tense) - 过去开始到现在仍在从事的 将来完成时(future perfect tense)- 所发生的事必将会在将来的某一个时刻结束（不太会考）
*虚拟语气 subjunctive tense
4. Constructing Sentences That Aren't Parallel 如并列成分中的时态一致，词性一致等，做了几道题发现这个考得最多
5. Comparing Apples and Oranges 比较的两个东西必须是可以比较的 比如 他的头 和 她 不能比 动作 和 名词 也不能比
6. Making the subject and Verb Disagree 主谓一致，如单复数 * either, each, every 等需要特别注意