在托福写作中，语法错误是许多考生容易忽视但又至关重要的方面。一个清晰、准确、语法正确的句子不仅能够更好地传达思想，还能有效提升文章的整体质量，从而在评分中获得更高的分数。以下是新航道的石家庄托福培训小编整理的一些托福写作中常见的语法错误及扣分点，供考生参考和避免。

一、主谓不一致

错误示例：She are a good friend of mine that I has known for a long time.

解析：主语（She）是单数，而动词（are）是复数形式，应改为单数形式is；同时，定语从句中的动词（has）也应与主语（I）保持一致，使用单数形式have known。

二、句子结构不完整

错误示例：Many students have a hard time passing all the tests to get into college. For example, my friend in high school.

解析：第二个句子缺少主语和谓语，无法独立成句，应将其与前一句连接起来，如：“For example, my friend in high school also struggled to get into college.”

三、缩写形式的使用

错误示例：I'll go to the library tomorrow. (在正式写作中)

解析：托福写作是正式场合的书面表达，应避免使用缩写形式（如I'll, don't, can't等），而应使用完整形式（I will, do not, cannot等）。

四、关联词语的重复

错误示例：Since I want to go to a good school, therefore I am trying to raise my test scores.

解析：在句子中，不能同时使用两个表示因果关系的连词（如Since和therefore），应去掉其中一个。

五、词性混乱

错误示例：However, the question such as "Have you ever regretted marrying your husband" may be very privacy and embarrassingly.

解析：此句中“privacy”是名词，而“embarrassingly”是副词，两者词性不匹配，应分别改为形容词“private”和“embarrassing”。

六、拼写和标点错误

错误示例：I love animals, and I like to help them. Because they are helpless, so I want to become a vet.

解析：此句中存在标点错误，即“Because”和“so”不能同时用于连接两个句子，应去掉其中一个，并在两句话之间使用逗号加连词（如and, but等）或分号来连接。同时，注意检查拼写错误，确保每个单词都拼写正确。

七、时态错误

错误示例：Yesterday I will go to the store because tomorrow I needed some food.

解析：时态使用混乱，应根据句意使用正确的时态。本句应改为：“Yesterday I went to the store because I needed some food for today.”

八、非英语单词的使用

错误示例：Computers are very helpful and advantageable.

解析：虽然“advantageable”看起来像个单词，但实际上它并不是标准的英语单词。应使用正确的英语单词“advantageous”来替代。

九、介词多余

错误示例：We went to downtown yesterday to buy a watch.

解析：“Downtown”在此句中作副词使用，表示方向或位置，前面不需要加介词“to”。应改为：“We went downtown yesterday to buy a watch.”

十、表达中式化

错误示例：The second argument-it might have been noticed by others-is that in some occasion, it is quite difficult to compare parents to teachers because parents are a kind of people, teachers are a kind of vocation.

解析：此句表达过于中式化，不符合英语表达习惯。应改为更地道的英语表达方式，如：“The second argument, which may have been noticed by others, is that comparing parents to teachers can be difficult because parents and teachers represent different roles and responsibilities.”

综上所述，新航道石家庄学校认为托福写作中的语法错误多种多样，但只要考生在平时的学习中多加注意和练习，就能够有效避免这些错误的发生。建议考生在备考过程中多阅读英文文章和书籍，积累词汇和句型；同时加强语法练习和写作训练，不断提升自己的英语写作能力。