一、语法维度
简单句是对于一个事情的主干描述，加上定语、状语、同位语、插入语，就可以让句子复杂而高级。
而定语在语法上有形容词、分词、介宾短语、名词、从句等形式，位置上可分为前置定语和后置定语。
状语在语法上有副词、分词、介宾短语、从句等形式，位置上句子开头，中间和结尾都有可能。
同位语一般放在名词后。
插入语放在句首或者句中。
再加上并列，基本上句子就可以变得很高级。
我们现在举一下例子：Students need to read books every day.
✦加上定语University students need to read books over a wide range of subjects.
✦加上状语University students need to read books over a wide range of subjects in order to acquire more knowledge.
✦加上同位语或者插入语University students need to read books over a wide range of subjects, such as history, psychology and science, in order to acquire more knowledge.
✦加上定语从句University students need to read books over a wide range of subjects, such as history, psychology and science, in order to acquire more knowledge that is of use to their future career.
✦加上状语从句University students need to read books over a wide range of subjects, such as history, psychology and science, in order to acquire more knowledge that is of use to their future career, as long as they have free time.
✦加上并列University students or young people who just enter the workforce need to read books over a wide range of subjects, such as history, psychology and science, in order to acquire more knowledge that is of use to their future career, as long as they have free time.
二、思考维度
语法能够确保句子的准确，但是光有语法还不够，因为同学可能不知道需要加什么定语，状语等。
这个时候我们可以从以下角度将句子细化，使句子变得高级，如考虑：when, where, who, how, why, what consequences, in what conditions, how often等等。
再比如，People go to the gym.
✦加上whenPeople go to the gym whenever they like.
✦加上wherePeople go to the gym whenever they like, as long as it is near home.
✦加上whoHealth-conscious people go to the gym whenever they like, as long as it is near home.
✦加上howHealth-conscious people go to the gym whenever they like, as long as it is near home, and use fitness equipment there, such as treadmills and dumbbells.
✦加上whyHealth-conscious people go to the gym whenever they like, as long as it is near home, and use fitness equipment there, such as treadmills and dumbbells to build muscles and stay fit.
