备考托福写作一定要打好语法基础，如果写作中出现太过明显的语法错误肯定会影响写作成绩。下面，牛学君为大家整理了6类托福写作中常见的语法错误，希望大家在写作中能够避免。

1. 托福写作常见语法错误之句子缺少连词

两个句子之间不能只用逗号连接，要有连词。

误：My sister loves to dance， she is very good at it.

2. 托福写作常见语法错误之句式不平行

句子中并列的成分应该是相同的结构。

误：I like to eat Japanese and eating Thai food.(eating-> eat)

误：Teenagers are more influenced by their peers than their parents.(than their parents-> than by their parents)

3. 托福写作常见语法错误之句子不完整

句子缺少主语或谓语。

误：Because some necessary procedures such as transporting the factories， modifying equipment or planting more trees.

4. 托福写作常见语法错误之句意重复或冗余

误：The low-priced car was inexpensive.(low-priced和inexpensive重复)

误：personally， I believe what the newspaper prints.(personally和I believe重复)

5. 托福写作常见语法错误之时态，语态不一致

我们来看几种常见错误(句例说明)：

She did not adapt to the environment, but with time passing by, they find him more and more proficient.

she 和him是怎么个意思咧?

I shall use my father's experience as an example. My father went to Australia several years ago. He see many birds and animals. 明明是过去，see怎么穿越回来了?

The gift I made are very pretty. gift是单数啊，are是怎么回事?

6.托福写作常见语法错误之连词类缺失

Successful men will have many places to live, a country house can provide a nice environment to relax, then it will be a new start point, but will not be an end one.

大家暂且忽略语法问题，且看这个句子。这个句子的第一个问题就是连词缺失：在live和a country house 之间原作者使用逗号衔接的，但是呢，逗号并不能代替and等连词的作用。因为 Successful men will have many places to live和a country house can provide a nice environment to relax都是两个完整的句子，而没有主从依附关系，所以必须得有连词(and，but，therefore)等连接才能保证句子有效。

总结：

缺连词的另一大原因是很多同学不知道什么是连词，什么不是。and or but 是最有名的三个连词。但是!however, so, yet, nevertheless也是连词!!!可以连接两句句子!

以上是牛学君为大家整理的托福写作中常见的语法错误，希望对大家备考有帮助。托福写作考试中建议大家留出2-3分钟检查，主要检查和修改文章中的语法错误。