我正在写一本书，已经输入了大量文档主体内容，但我想将 7 章的结构改为几个部分 - 我不确定整个结构，但想将第 1 章和第 2 章放入第 1 部分，将第 4 章和第 5 章放入第 2 部分（我想我现在会将当前的第 3 章移到哪里，但不确定放在哪里）。
以下是该文件的基本结构：
\input{preamble}
\begin{document}
\frontmatter
\include{toc}
\mainmatter
\include{chapter1}
\include{chapter2}
\include{chapter3}
\include{chapter4}
\include{chapter5}
\include{chapter6}
\include{chapter7}
\appendix
\include{appendix}
\backmatter
\printindex
\end{document}
这是我的“rop.tex”文档，当我将其更改为以下内容时：
\input{preamble}
\begin{document}
\frontmatter
\include{toc}
\mainmatter
\include{part1}
\appendix
\include{appendix}
\backmatter
\printindex
\end{document}
我收到未定义控制序列的错误消息。以下是“新”第 1 部分的 MWE：
\part{Sunday Prayers}
\chapter{Saturday Evening Prayers}
Towards evening, we stand before the holy icons \index{icons} (having lit a candle and maybe some incense), with reverence and fear of God; we gather our thoughts, make the Sign of the Cross, \index{Sign of the Cross} and say:
In the Name of the Father, and the Son, and the Holy Spirit. Amen. \footnote{In the Holy Orthodox Church, there are times when we make the Sign of the Cross (see Appendix H) with a bow from the waist where we touch the ground with the fingers of our right hand (known as a \textit{metanoia} or simply a ``bow''). The places where it is appropriate to do so are indicated in this prayer book with a red Maltese Cross.\\
And much more ...
\chapter{Sunday Morning Prayers}
Having awakened, we stand before the holy icons (having lit a candle and maybe some incense), with reverence and fear of God; we gather our thoughts, make the Sign of the Cross, and say:
In the Name of the Father, and the Son, and the Holy Spirit. Amen. \footnote{In the Holy Orthodox Church, there are times when we make the Sign of the Cross (see Appendix H) with a bow from the waist where we touch the ground with the fingers of our right hand (known as a \textit{metanoia} or simply a ``bow''). The places where it is appropriate to do so are indicated in this prayer book with a red Maltese Cross.\\
以下是我序言的 MWE：
\documentclass[fontsize=12pt]{scrbook}
\interfootnotelinepenalty=10000
\makeatletter
\renewcommand\chapterheadstartvskip{\vskip50pt}
\newcommand\chaptitlefont{%
\fontfamily{pbk}\fontseries{db}%
\fontshape{n}\fontsize{25}{35}\selectfont\raggedleft}
\newcommand\chapnumfont{%
\fontfamily{pbk}\fontseries{m}\fontshape{n}%
\fontsize{1in}{0in}\selectfont\color{numbercolor}}
\renewcommand\chapterheadendvskip{\par\vskip2mm\hrule\vskip40pt}
\renewcommand*{\@@makechapterhead}[1]{\chapterheadstartvskip
{%
\setlength{\parindent}{\z@}\setlength{\parfillskip}{\fill}%
\normalfont\sectfont\nobreak\size@chapter{}%
\if@chapterprefix
\let\@tempa\raggedsection
\else
\let\@tempa\@hangfrom
\fi
\@tempa{\ifnum \c@secnumdepth >\m@ne%
\if@chapterprefix
\expandafter\size@chapterprefix
\else
\expandafter\size@chapter
\fi
\if@chapterprefix
\size@chapterprefix{}\endgraf\nobreak\vskip.5\baselineskip
\fi
\fi
}%
\begin{tabularx}{\textwidth}{Xl}
{\parbox[b]{\linewidth}{\chaptitlefont #1}}
& \raisebox{-15pt}{\chapnumfont\thechapter}%
\end{tabularx}%
\nobreak\chapterheadendvskip
}%
}
\renewcommand*{\@@makeschapterhead}[1]{%
\chapterheadstartvskip%
{\normalfont\sectfont\nobreak\size@chapter{}%
\setlength{\parindent}{\z@}\setlength{\parfillskip}{\fill}%
\raggedsection \interlinepenalty \@M
\begin{tabularx}{\textwidth}{X}%
{\parbox[b]{\linewidth}{\chaptitlefont #1}%
\vphantom{\raisebox{-15pt}{\chapnumfont 1}}}
\end{tabularx}%
\par}%
\nobreak\chapterheadendvskip%
}
\makeatother
\usepackage{amssymb}
\usepackage{framed}
\usepackage{indentfirst}
\usepackage{changes}
\usepackage[pagestyles]{titlesec}
\titlespacing*{\section}{0pt}{1.5ex}{1.5ex}
\titlespacing*{\subsection}{0pt}{1.5ex}{1.5ex}
\titlespacing*{\subsubsection}{0pt}{1.5ex}{1.5ex}
\titleformat{\section}
{\normalfont\Huge\scshape\mdseries\centering}{}{16pt}{\LARGE}
\titlespacing*{\section}
{0pt}{20pt}{16pt}
\titleformat{name=\subsection,numberless}
{\normalfont\Large\bfseries\filcenter\color{black}}{}{0em}{}
\titlespacing{\subsection}
{0pt}{3.25ex plus 1ex minus .2ex}{1.5ex plus .2ex}
\titleformat{name=\subsubsection,numberless}
{\normalfont\large\bfseries\filcenter\color{black}}{}{0em}{}
\titlespacing{\subsection}
{0pt}{3.25ex plus 1ex minus .2ex}{1.5ex plus .2ex}
\titlespacing{\section}{0pt}{*2}{*2}
\titlespacing{\subsection}{0pt}{*2}{*2}
我不习惯处理部分环境，虽然在我看来将章节组合成部分是一个简单的问题，但我不断收到错误消息，或者它编译但没有第 1 部分、第 1 章和第 2 章的任何文本。
欢迎任何帮助。
答案1
我假设您的“基本结构”文档编译时没有错误。如果是这样，那么只需\part{...}在适当的位置插入命令，例如：
...
\mainmatter
\part{First}
\include{chapter1}
\include{chapter2}
% \include{chapter3} % where is this to go?
\part{Second}
\include{chapter4}
\include{chapter5}
% and so on