托福作文如果想得高分，个人觉得字数是越多越好，如果可以扩充到450字，那么拿高分的机会就会大一点。

本人刚接触作文的时候，觉得最大的问题就是题目的设置都是些不言自明的或者浅显的不知道说什么的东西。比如建工厂好不好或者父母是不是最好的老师，尽管有论点，但是就是觉得写不长，觉得没法展开。

具体点的例子，比如是从书本中获得知识好还是从实践中获得知识好，有一段想说从书本中获得知识好，因为书一读就知道很多，多爽啊;实践的话要好久才能懂得一个道理，不efficient。论点是有了，怎么把它展开成150-200字左右的一段呢?

如果可以遵循以下步骤就会方便展开：阐述正面特征，展开论述，引用例子或数据，如果没有的不良后果。

第一句：topic sentence:书本上获得的知识更全面，含量更大

第二句：正面阐述subject特征：书是对于现象事实等的文字记录，尽管事实复杂或者事实的获得用了很久，但是结论可以用很简单的文字获得。所以，比起经验，书本可以带给人更多的知识。(本句是对书的特点的正面阐述，点名了书本知识的浓缩性)

从这里，逻辑展开从书本→浓缩了丰富的知识变成了书本→其性质是把各种经验做整理和记录→浓缩了丰富的知识。也就是说，说理部分是在简单的逻辑(工厂→污染)中间加上一环(工厂→运营难免排放废水废料废气→污染)。这样看似简单，可是这样中间的一环却是必须的，否则你说工厂会导致污染，判卷人会觉得：为什么工厂就会导致污染呢?逻辑跳跃太大了，托福作文就是给一个6岁小孩讲道理，所以要像照顾小孩子一样对待阅卷人，逻辑展开一定要一步一步的来。

其实，到这里说理部分就结束了，展现了你的思考问题的逻辑结构。后面的“如果没有”，“引用例子，数据”之类的都是增加文采，扩充文字的，依据时间长短，自己随便挑两到三样加上去即可。

1 引用例子：the example of__ matches my point of view perfectly; To look for better illustration, one can look no further than___; one case in point involves___, 自己编一个例子即可，可以是真的，也可以是编的，甚至是自己生活中的。引用例子的时候参考一下上面的句型，别总用for example 和such as

2 引用“权威”调查和数据。A recent survey, revealing that___ can also serve to demonstrate this point; A research, in which__ were investigated, suggests that____. 调查和数据都是自己编的，别太离谱就行了。

3 如果没有： seldom can we imagine the situation without___; hundreds of years ago, when there was no__, people_(生活多么麻烦和困难)__

下面是一个具体例子：

第一句Knowledge obtained from books is more diverse and has larger quantity. (论点)

第二句正面阐述对象特征Books are written form of documentation of facts and phenomenon, which, although obtained through numerous efforts, can be put down in only a few simple words. Therefore, compared to practicing,比较兼插入 reading books can bring people numerous amounts of knowledge in a more convenient and efficient way.

后面的随便捡两样

如果没有Hardly can we imagine the situation without those concise expressions of ideas. Without the benefits of books, the brilliant ideas of predecessors will be lost due to the lack of recording; students will have no material to go over when they are faced with examinations; all the essence and beauty of poems and novels will never be appreciated by the descendents.(排比，是一个亮点，如果考场想不起来可以不写的)

引用例子More specifically, take the biological class as an example. If the teacher wants his students to grasp Mendel’s law of inheritance, instead of guiding the students to grow some pea, he will open up the textbook and tell the students what the result of the experiment that had been conducted is and what law Mendel has found.

引用数据Besides, investigation showing that books account for 90 percent of the sources provided for students to obtain knowledge can also support my side.

大家也许可以看出来，后面三个部分即使扔掉一部分段落还是基本完整的，实际上本人在考试的时候，刚开始没有把三种都用上，是写完作文还有时间才再把个别段落加个数据调查，或者再加一句如果没有的。

另外补充一点，写完例子的时候最好要再收尾一下，比如说，from the example, we can see that by reading books, we can obtain the most knowledge within a short time 之类的。这样论述就更完整了，逻辑在老外作文里是很重要的，骨头长正了肉才能长好，人才能漂亮。