托福写作中的语法扣分情况在考生中一直是比较常见的，而扣分原因也可以说是五花八门。想要避免或是减少这类错误出现，比较简单粗暴的方法就是让大家直接来看看这些错误的实例，下面洒托小就为大家带来托福写作语法类高频扣分问题的实例讲解。
1.there be 句型误用
There are a great many parents require their children to learning music and art since they are at the age of five.
There are a large number of students spend more than ten hours a day on learning English in CAU.
There be 句型是我们在写作中经常用的一种句型，可惜这种句型很多考生并不能真正掌握。在there be后面如果要加动词，千万不要出现例句所犯的错误，要时刻记得be动词后面应该加的是ing形式。
2.主谓不一致错误
A quantity of people concerns about how to solve the severe problem of air contamination.
Restricted by methods, students has to be influenced by their teachers, even though the teachers are not outstanding.
新托福写作不同于汉语，汉语中的谓语动词是不会有任何变化的。比如说一个人在吃饭和一万个人在吃饭，吃就是吃，不会有吃s和吃之分。可是在英语中，谓语动词要根据主语的单复数情况进行变化。在上面的两个例句中，主语都是复数，而谓语动词却选择了单三形式，显然是不正确的。

3.时态错误
In the past, the major way for young people to learn knowledge is attending classes.
When I study in college, I have no choice but to spend more than 10 hours a day on academic study.
托福写作中除了主谓一致之外，还有一个特点就是时态问题。过去时，过去完成时，一般现在时，将来时，正在进行时等等。各种各样的时态也是我们要数量掌握的。在上面的例句中，所犯错误即为将过去时的动词写成了一般现在时。
4.作文中的名词单复数错误
A great many student would benefit from the investment on improving school.
Few parent would like to permit their child to make any mistake.
Environmental problem are beyond the ability of individual.
上面这三句话中，都出现了共同的错误，就是本来应该是复数的名词却写成了单数形式。
5.词性误用
No one can negative the importance of money.
Family members play significance role in our journey s of success.
托福写作词性误用同样是托福考生常犯的一种错误，因为英语单词的名词形式，形容词形式，副词形式很多时候是非常相近的，如果我们对语法掌握或者对于单词本身掌握不够扎实的话，很容易出这种错误。