强调句是人们为了表达自己的意愿或情感，通过各种方式对句子中的某个部分进行强调，从而起到修辞的作用。
⒍比较状语从句可表强调
Nothing is more imperative than to learn from the past.
⒎强调句型可表强调
It is \was +被强调部份+ that \ who +原句剩余部份
It is stability that destroys people’s ambition and barricades people’s steps.
It is through competition that children can learn the meaning of courage.