我正在用单面文档写论文，但我想打印它，我想切换到双面文档。我在 loadclass 后添加了 twoside，但没有帮助。我不是 LaTeX 专家，也许我的代码有问题？
第一个文件代码：
\message{*** [aghdpl.cls] --- (MSz, GJN) v0.22 <05.04.2011> ***}
\newif\ifpdflatex\pdflatexfalse
\NeedsTeXFormat{LaTeX2e} %
\ProvidesClass{aghdpl}
\DeclareOption{pdflatex}{\pdflatextrue}
\DeclareOption*{\PassOptionsToClass{\CurrentOption}{report}}
\ProcessOptions\LoadClass[a4paper,twoside]{report}
\RequirePackage{times}
\RequirePackage[T1]{fontenc}
\RequirePackage{graphicx}
\RequirePackage{geometry}
\RequirePackage[usenames]{color}
\RequirePackage{fancyhdr}
\RequirePackage{url}
\RequirePackage{titlesec}
\RequirePackage{tocloft}
\geometry{lmargin=30mm, rmargin=20mm, tmargin=25mm, bmargin=25mm, foot=10mm, head=10mm}
\definecolor{Green}{rgb}{0.1,0.5,0.1}
\def\shorttitlePL#1 {\gdef\@shorttitlePL{#1}}
\def\shorttitleEN#1 {\gdef\@shorttitleEN{#1}}
\def\shortauthor#1 {\gdef\@shortauthor{#1}}
\def\titlePL#1 {\gdef\@titlePL{#1}}
\def\titleEN#1 {\gdef\@titleEN{#1}}
\def\facultyEN#1 {\gdef\@facultyEN{#1}}
\def\facultyPL#1 {\gdef\@facultyPL{#1}}
\def\thesistypePL#1 {\gdef\@thesistypePL{#1}}
\def\thesistypeEN#1 {\gdef\@thesistypeEN{#1}}
\def\supervisorPL#1 {\gdef\@supervisorPL{#1}}
\def\supervisorEN#1 {\gdef\@supervisorEN{#1}}
\def\acknowledgements#1 {\gdef\@acknowledgements{#1}}
\def\departmentPL#1 {\gdef\@departmentPL{#1}}
\def\departmentEN#1 {\gdef\@departmentEN{#1}}
% \thesisheaders
%
% \pagestyle{fancy}
%\bibliographystyle{abbrv}
\linespread{1.3}
\renewcommand{\labelitemi}{$\m@th\bullet$}
%------------------------------------------------------------------------------
\newcommand{\titlepages}{%
\newpage \titlepage
\begin{center}
{\sffamily{\Large{\bfseries{\textsc Akademia G\'{o}rniczo-Hutnicza\\[2mm]
im. Stanis\l{}awa Staszica w Krakowie}}}
\vspace*{1mm}\rule{\textwidth}{1mm}\vspace*{1mm}
{\large \@facultyPL}}\\\vspace*{2mm}
{\large\textsc{\@departmentPL}}\vspace*{1cm}
\ifpdflatex\includegraphics[scale=0.3]{agh}
\else\includegraphics[scale=0.7]{agh}
\fi
\vspace*{1cm}
{\huge\scshape \@thesistypePL}\\\vspace*{2cm}
{\LARGE\scshape \@author}\\\vspace*{2cm}
{\LARGE{\bfseries\scshape \@titlePL}}\\\vspace*{3cm}
\begin{flushright}
\begin{minipage}[!h]{6cm}
\large{\scshape Promotor:}\\ \@supervisorPL
\end{minipage}
\end{flushright}
\vfill{\Large Krak\'{o}w \@date}
\end{center}
\clearpage \titlepage
\begin{center}
{\sffamily{\Large{\bfseries{\textsc AGH\\[2mm]
University of Science and Technology in Krakow}}}
\vspace*{1mm}\rule{\textwidth}{1mm}\vspace*{1mm}
{\large \@facultyEN}}\\\vspace*{2mm}
{\large\textsc{\@departmentEN}}\vspace*{1cm}
\ifpdflatex\includegraphics[scale=0.3]{agh}
\else\includegraphics[scale=0.7]{agh}
\fi
\vspace*{1cm}
{\huge\scshape \@thesistypeEN}\\\vspace*{2cm}
{\LARGE\scshape \@author}\\\vspace*{2cm}
{\LARGE{\bfseries\scshape \@titleEN}}\\\vspace*{3cm}
\begin{flushright}
\begin{minipage}[!h]{6cm}
\large{\scshape Supervisor:}\\ \@supervisorEN
\end{minipage}
\end{flushright}
\vfill{\Large Krakow \@date}
\end{center}
\clearpage \titlepage
\vspace*{15cm} \vfill
\begin{flushright}
\begin{minipage}[!h]{8cm}
{\Large \@acknowledgements}
\end{minipage}
\end{flushright}
\clearpage
\setcounter{page}{4}
}
\def\thesisheaders{
\fancyfoot[L]{\small \@shortauthor\quad\textit{\@shorttitlePL}}
}
\DeclareOption{en}{
\def\thesisheaders{
\fancyfoot[L]{\small \@shortauthor\quad\textit{\@shorttitleEN}}
}
}
\ProcessOptions
\pagestyle{fancy}
\renewcommand{\chaptermark}[1]{\markboth{\thechapter.\ #1}{}}
\renewcommand{\sectionmark}[1]{\markright{\thesection.\ #1}}
\renewcommand{\headrulewidth}{0.5pt}
\renewcommand{\footrulewidth}{0.5pt}
\fancyhf{}
\fancyhead{}
\fancyhead[L]{\slshape{\small \rightmark}}
\fancyhead[R]{\bfseries \thepage}
\thesisheaders
\frenchspacing
\sloppy
\widowpenalty 9999
\clubpenalty 9999
\flushbottom
\titleformat{\chapter}[block]
{\bfseries\LARGE}{\filright \LARGE\thechapter. }{0ex}{}
%odst�py: lewy, g�ra, d��
\titlespacing{\chapter}{0pt}{17mm}{19mm}
\titleformat{\section}[block]
{\bfseries\Large}{\filright \Large\thesection. }{0ex}{}
\titlespacing{\section}{7mm}{8mm plus 0mm minus 1mm}{4mm plus 0mm minus 1mm}
\titleformat{\subsection}[block]
{\bfseries\large}{\filright \large\thesubsection. }{0ex}{}
\titlespacing{\subsection}{7mm}{6mm}{2.5mm}
\titleformat{\subsubsection}[block]
{\bfseries\normalsize}{\filright \normalsize\thesubsubsection. }{0ex}{}
\titlespacing{\subsubsection}{7mm}{3mm}{1.5mm}
\renewcommand{\cfttoctitlefont}{\bfseries\Large}
\renewcommand{\cftbeforetoctitleskip}{20mm}
\renewcommand{\cftaftertoctitleskip}{19mm}
\renewcommand{\cftchapleader}{\cftdotfill{\cftdot}}
\renewcommand{\cftsecleader}{\cftdotfill{\cftdot}}
\renewcommand{\cftsubsecleader}{\cftdotfill{\cftdot}}
\renewcommand{\cftchapaftersnum}{.}
\renewcommand{\cftsecaftersnum}{.}
\renewcommand{\cftsubsecaftersnum}{.}
\setlength{\cftparskip}{2pt}
\setlength{\cftbeforechapskip}{0mm}
\renewcommand{\cftchappagefont}{\normalsize}
还有一个：
\documentclass[pdflatex,12pt,twoside]{aghdpl}
\renewcommand{\baselinestretch}{1.5}
\usepackage[polish]{babel}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}
\usepackage{hyperref}
\usepackage{subfig}
\usepackage{polski}
\usepackage[utf8]{inputenc}
\usepackage{amsthm}
\usepackage[intlimits]{amsmath}
\usepackage{amsmath}
\usepackage{changepage}
\usepackage{multirow}
\usepackage{gensymb}
\usepackage{wrapfig}
\usepackage{tabularx}
\usepackage{geometry}
\usepackage{adjustbox}
% dodatkowe pakiety
\usepackage{enumerate}
\usepackage{listings}
\lstloadlanguages{TeX}
\lstset{
literate={ą}{{\k{a}}}1
{ć}{{\'c}}1
{ę}{{\k{e}}}1
{ó}{{\'o}}1
{ń}{{\'n}}1
{ł}{{\l{}}}1
{ś}{{\'s}}1
{ź}{{\'z}}1
{ż}{{\.z}}1
{Ą}{{\k{A}}}1
{Ć}{{\'C}}1
{Ę}{{\k{E}}}1
{Ó}{{\'O}}1
{Ń}{{\'N}}1
{Ł}{{\L{}}}1
{Ś}{{\'S}}1
{Ź}{{\'Z}}1
{Ż}{{\.Z}}1
}
...
\end{document}'
如果有人能帮助我将非常感激！