考生在托福写作考试中经常会写出一些不符合英语表达习惯的句子。为了帮助考生提高写作分数，小编将为大家列举并分析托福写作常见语法错误，希望能给大家带来一些启发。
语法错误一：单复数不一致
单复数原则涉及可数名词单复数和动词三单(即主语为单数且动词使用现在时，动词需要用单数)。这个道理无人不知，但往往实践和理论是脱节的。那么，学生们会写成什么样子呢?
错1：Job-related decision must depend on some specific situation.
析1：situation是可数名词，当被some修饰时，应用复数。
改1：Job-related decision must depend on some specific situations.
语法错误二：动词原形做主语
动词原形是不可以做主语的，必须用动名词(doing)或不定式(to do)的形式。
错2：Study hard will increase a person’s competence.
析2：此句使用动词原形做主语，需改成动名词(doing)或不定式(to do)的形式。
改2：Studying hard will increase a person’s competence.
语法错误三：两个或多个独立的句子用逗号连接
逗号并不具备链接两个独立句子的功能。两个独立的句子有以下几种写法：
第一，两个句子用句号隔开，句首都需要首字母大写。
第二，用逻辑连接词连接两个句子，写作中常用的逻辑连接词为并列关系(and，分号)、转折(but, yet)、因果(for, so)。
第三，写成复合句的形式，即名词性从句、定语从句或状语从句。
错6：People inevitably have access to unhealthy or violent information on the Internet, some people especially teenagers will be easily attracted by those information.
析6：本句中，逗号连接了两个独立而完整的句子，是错误的。
改6-1：People inevitably have access to unhealthy or violent information on the Internet. Some people especially teenagers will be easily attracted by those information.
改6-2：People inevitably have access to unhealthy or violent information on the Internet and some people especially teenagers will be easily attracted by those information.
改6-3：People inevitably have access to unhealthy or violent information on the Internet; some people especially teenagers will be easily attracted by those information.
语法错误四：从句单独成句
从句的“从”意为“从属”，所以，它是不具备独立的功能的。也就是说，不能把从句连接词首字母大写变成一个独立的句子。从句是复合句的一部分，从句和主句是不可分割的。所以，从句必须和主句一起构成一个完整的句子。
错8：The professor states that our culture has changed a lot. Which means we do not have to find what we want only from the literature work but also from the Internet.
析8：which引导的定语从句独立成句，是错误的。
改8：The professor states that our culture has changed a lot, which means we do not have to find what we want only from the literature work but also from the Internet.
以上就是托福写作常见语法错误，希望能给考生的学习带来帮助。最后，小编祝愿各位考生在托福考试中取得好成绩!
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