同学你好，该知识点来自沪江网校《初中水平直达雅思6.5分【剑桥全能随到随学班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好，
当形容词被as, so, too, how, however等修饰时，形容词所修饰的名词必须是单数可数名词，并且修饰名词的不定冠词应放在形容词之后，而不是之前。
所以这里本来是that may be a schematized presentation to most readers，要加too的时候必须把a放后面变成that may be too schematized  a presentation to most readers哦
类似的还有：
1. as+adj.+a+n.

He was not as quick a learner as his brother. 他没他弟弟学得快。

She’s as good an actress as she is a singer. 她当演员和当歌手都一样出色。

2. how+adj.+a+n.

How good a eacher he is! 他是多好的老师啊！

With this, we can determine how high a mountain is 有了这个，我们就可以测量山有多高。

Travelling on however humble a scale is expensive in Scotland. 在苏格兰旅行，不管规格怎么低，也很费钱。

3. so+adj.+a+n.

Is this so unusual a case? 这种情况那么不寻常吗?

It was so warm a day that I could hardly work. 天热得我简直没法工作。

4. too+adj.+a+n.

She is too polite a person to refuse. 她非常客气，不好意思回绝。

Too rich a diet is not good for you. 吃太多油腻的食物对你的身体不好。

5. however+adj.+a+n.

However strong a man he is, he can’t lift such a heavy stone. 不管一个人力气多大，他也举不起这么重的石头。

希望对你有帮助o(∩_∩)o