下文为大家总结托福独立写作中考生常犯的10种语法错误，并且给出相应的例子加以评析和更正。更多托福考试机经及资讯，请关注新通外语托福频道。
6、两个简单句之间缺乏连词
如果用逗号连接两个简单句，那句子之间必须有恰当的连词，不能只用逗号来连接。
例12：Many Chinese students are good at their studies, they don’t have much social experience.
评析：逗号连接的是两个独立的含有主谓结构的句子，两个句子之间是转折关系，必须加上表转折的连词(如but)，不能只用逗号连接。
更正：Many Chinese students are good at their studies, but they don’t have much social experience.
例13：I am a boy, I am strong.
评析：I am a boy和I am strong是两个简单句，中间可以加连词，可以用分号，可以写成两句话，或是把其中一句改为非谓语结构，但是不能只用逗号连接。
更正1：I am a boy, and I am strong.
更正2：I am a boy; I am strong.
更正3：I am a boy. I am strong.
更正4：Being a boy, I am strong.
7、从句独立成句
从句必须依附于主句而存在，单独一个连词引导的从句不能用句点和主句隔开而独立成句。
例14：It is more helpful for children to make mistakes and learn from their own mistakes. Because making mistakes sometimes is the best way to avoid more mistakes and to cultivate some valuable characters.
评析：Because引导的原因状语从句不能单独成句，必须依附于主句而存在。可以把两句话连成一句，或是把原因状语从句改为以it is because或this is because开头的句子。
更正1：It is more helpful for children to make mistakes and learn from their own mistakes because making mistakes sometimes is the best way to avoid more mistakes and to cultivate some valuable characters.
更正2：It is more helpful for children to make mistakes and learn from their own mistakes. This is because making mistakes sometimes is the best way to avoid more mistakes and to cultivate some valuable characters.
8、词性误用
考生在记单词的时候容易只记单词的意思，不注意词性和用法，导致名词、动词、形容词、副词之间词性误用的情况。这样的错误比较严重，应该避免。
例15：He worked industrious all day.
评析：句中的industrious是形容词，不能修饰动词。形容词用于修饰名词，副词可以修饰动词、形容词和副词。
更正：He worked industriously all day.
9、代词错误
代词方面的错误主要是代词与其所指代的名词单复数不一致。
例16：As a person, sooner or later, they will meet some problems.
评析：句中的they作为复数代词与其所指代的名词person单复数不一致，应用单数形式的代词。
更正：As a person, sooner or later, he or she will meet some problems.
10、介词后面跟动词原形
介词后面不能跟动词原形，必须跟名词或动名词。
例17：People splash water to each other for celebrate their new year.
评析：介词for后面不能跟动词原形celebrate，可以改为动名词形式。
更正：People splash water to each other for celebrating their new year.
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