我正在写一篇关于期刊模板的论文，该模板使用两列格式，但我的一些表格和图片不适合两列，我需要将它们放在一列中。现在，我已经使用了multicol包，但它弄乱了研究期刊的模板。我也使用了\onecolumn命令，但它将表格移到下一页。所以，有人能告诉我是否有其他方法可以将单列表强制转换为双列表格式吗？
\documentclass[Afour,sageh,times]{sagej}
\usepackage{multirow}
\usepackage{moreverb,url}
\usepackage[colorlinks,bookmarksopen,bookmarksnumbered,citecolor=red,urlcolor=red]{hyperref}
\newcommand\BibTeX{{\rmfamily B\kern-.05em \textsc{i\kern-.025em b}\kern-.08em
T\kern-.1667em\lower.7ex\hbox{E}\kern-.125emX}}
\def\volumeyear{2016}
\begin{document}
\runninghead{Smith and Wittkopf}
\title{A demonstration of the \LaTeXe\ class file for
\itshape{SAGE Publications}}
\author{Alistair Smith\affilnum{1} and Hendrik Wittkopf\affilnum{2}}
\affiliation{\affilnum{1}Sunrise Setting Ltd, UK\\
\affilnum{2}SAGE Publications Ltd, UK}
\corrauth{Alistair Smith, Sunrise Setting Ltd
Brixham Laboratory,
Freshwater Quarry,
Brixham, Devon,
TQ5~8BA, UK.}
\email{[email protected]}
\begin{abstract}
This paper describes the use of the \LaTeXe\
\textsf{\journalclass} class file for setting papers to be
submitted to a \textit{SAGE Publications} journal.
The template can be downloaded \href{http://www.uk.sagepub.com/repository/binaries/SAGE LaTeX template.zip}{here}.
\end{abstract}
\keywords{Class file, \LaTeXe, \textit{SAGE Publications}}
\maketitle
\section{Introduction}
Many authors submitting to research journals use \LaTeXe\ to
prepare their papers. This paper describes the
\textsf{\journalclass} class file which can be used to convert
articles produced with other \LaTeXe\ class files into the correct
form for submission to \textit{SAGE Publications}.
The \textsf{\journalclass} class file preserves much of the
standard \LaTeXe\ interface so that any document which was
produced using the standard \LaTeXe\ \textsf{article} style can
easily be converted to work with the \textsf{\journalclassshort}
style. However, the width of text and typesize will vary from that
of \textsf{article.cls}; therefore, \textit{line breaks will change}
and it is likely that displayed mathematics and tabular material
will need re-setting.
\begin{table}[h]
\centering
\caption{Add caption}
\begin{tabular}{cclcccccccccc}
\toprule
& \textbf{1} & \multicolumn{1}{c}{\textbf{2}} & \textbf{3} & \textbf{4} & \textbf{5} & \textbf{6} & \textbf{7} & \textbf{8} & \textbf{9} & \textbf{10} & \textbf{11} & \textbf{12} \\
\midrule
\multirow{4}[4]{*}{\textbf{X}} & \multirow{2}[2]{*}{\textbf{A}} & \textbf{C} & D & E & G & G & H & \textbf{I} & & & & \\
& & \textbf{aa} & 1 & 2 & 3 & 4 & 5 & \textbf{6} & & & & \\
\cmidrule{2-13} & \multirow{2}[2]{*}{\textbf{B}} & \textbf{D} & A & X & V & S & E & T & Y & \textbf{E} & & \\
& & \textbf{bb} & 1 & 3 & 5 & 6 & E & W & T & \textbf{W} & & \\
\midrule
\multirow{4}[4]{*}{\textbf{Y}} & \multirow{2}[2]{*}{\textbf{C}} & \textbf{aa} & 4 & d & 5 & 8 & 6 & 7 & \textbf{8} & & & \\
& & \textbf{s} & a & g & j & y & r & d & \textbf{s} & & & \\
\cmidrule{2-13} & \multirow{2}[2]{*}{\textbf{D}} & \textbf{F} & 4 & E & 5 & R & T & 7 & 8 & E & 10 & \textbf{J} \\
& & \textbf{D} & S & F & YE & G & E & J & D & T & U & \textbf{S} \\
\bottomrule
\end{tabular}%
\label{tab:addlabel}%
\end{table}%
In the following sections we describe how to lay out your code to
use \textsf{\journalclass} to reproduce much of the typographical look of
the \textit{SAGE} journal that you wish to submit to. However, this paper is not a guide to
using \LaTeXe\ and we would refer you to any of the many books
available (see, for example, \cite{R1}, \cite{R2} and \cite{R3}).
\section{The three golden rules}
Before we proceed, we would like to stress \textit{three golden
rules} that need to be followed to enable the most efficient use
of your code at the typesetting stage:
\begin{enumerate}
\item[(i)] keep your own macros to an absolute minimum;
\item[(ii)] as \TeX\ is designed to make sensible spacing
decisions by itself, do \textit{not} use explicit horizontal or
vertical spacing commands, except in a few accepted (mostly
mathematical) situations, such as \verb"\," before a
differential~d, or \verb"\quad" to separate an equation from its
qualifier;
\item[(iii)] follow the journal reference style.
\end{enumerate}
\section{Getting started} The \textsf{\journalclassshort} class file should run
on any standard \LaTeXe\ installation. If any of the fonts, style
files or packages it requires are missing from your installation,
they can be found on the \textit{\TeX\ Collection} DVDs or downloaded from
CTAN.
\end{document}
这是期刊标准模板的一小部分，我希望表格位于页面中央，采用单列配置，表格前后的其余文本（不包括）采用双列格式
答案1
这就是figure*环境的用途。
\documentclass[twocolumn]{article}
\usepackage{lipsum}
\usepackage{graphicx}
\begin{document}
\lipsum[1-3]
\begin{figure*}[ht]\centering
\includegraphics{example-image-a}
\end{figure*}
\lipsum
\end{document}