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C++程序设计:原理与实践(基础篇)(原书第2版)
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C++程序设计:原理与实践(基础篇)(原书第2版)

by 本贾尼 斯特劳斯特鲁普
August 2021
Intermediate to advanced
450 pages
9h 36m
Chinese
Pearson
Content preview from C++程序设计:原理与实践(基础篇)(原书第2版)

6.4.1 英文文法

如果你以前从未接触过文法,我们希望你现在就开动大脑。事实上,即使你以前曾经接触过文法,现在还是要开动脑筋,现在我们来看一个很小的英文文法子集:

一个句子由语言的基本单元(例如名词、动词与连接词)构成。根据语法规则可以分析一个句子,确定哪些是名词,哪些是动词,等等。这个简单的文法也会产生一些没有意义的句子,例如:“C++fly and birds rules”,但如何修正这一问题已不属于本书的范围。

许多人已经在中学或者外语课(例如英语课程)上学习过这些文法规则了,这些文法规则是非常基本的。实际上,这些规则深深地印在我们的大脑之中,这也是神经学所研究的重要课题。

下面来看一下语法分析树,前面我们用它来分析表达式,这里用来描述简单的英语:

这些语法看起来并不是那么复杂。如果你不理解6.4节的内容,你现在可以回去头去重新阅读,经过第二次阅读你将会发现很多有用的东西。

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Publisher Resources

ISBN: 9787111562252