diff --git a/__latexindent_temp.tex b/__latexindent_temp.tex
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+%!TEX program = xelatex
+
+%表示用xelatex编译文件
+\documentclass[a4paper]{ctexart}
+\usepackage{array}
+\begin{document}
+    \title{标题页}
+    \author{Ryan\thanks{注脚}%
+        \and Fan\thanks{注脚}%
+        }
+    \date{\today}
+    \maketitle
+    \abstract
+    一般用于紧跟\textbackslash maketitle 命令之后介绍文档的摘要\par
+    中文\LaTeX{}排版。
+    \section{用\LaTeX 排版文字}
+    {}分段\\换行\textbackslash\par
+    冒号``please press the `x' key.''\par
+    连字符-用来组成复合词，\\%
+    短破折号--用来连接数字表示范围，\\%
+    长破折号---用来连接单词\par
+    省略号\dots{}和\ldots\par
+    波浪号～\par
+    强调\underline{文字,但是无法换行，}%
+    \uline{ulem 宏包解决了这一问题,它提供的 uline 命令能够轻松生成自动换行的下划线。}%
+    \emph{emph 命令用来将文字变为斜体以示强调。%
+        \emph{如果在本身已经用 emph 命令强调的文字内部嵌套使用 emph 命令,}%
+        内部则使用直立体文字。%
+        }\par
+    在合适的位置插入一个不会断行的空格Fig.~1, Ryan~Fan\par
+    断行\\[15pt]可以带可选参数 ⟨length⟩,用于在换行处向下增加垂直间距%
+    \newline{}或者newline命令，不用带参数\par
+    \newpage 断页，在在双栏排版中只起到另起一栏的作用\par
+    断词　I think this is: supercalifragil\-isticexpialidocious. %
+    And I think this is: supercalifragilisticexpialidocious.\par
+    \newpage
+    \tableofcontents
+    \section[目录和页眉页脚]{章节}
+    \subsection{子章节}
+    \subsubsection{子子章节}
+    \paragraph{段落}
+    \subparagraph{子段落}
+    \section*{标题不带编号}
+    \addcontentsline{toc}{section}{标题不带编号}
+    \part{分块}
+    \section{交叉引用}
+    A reference to this subsection\label{sec:this} looks like: %
+    ``see section~\ref{sec:this} on page~\pageref{sec:this}.''
+    \section{脚注和边注}
+    “天地玄黄,宇宙洪荒。日月盈昃,辰宿列张。”\footnote{出自《千字文》。}\par
+    \begin{tabular}{l}
+        \hline
+        有些情况下(比如在表格环境、各种盒子\\
+        内)使用 footnote 并不能正确生成脚\\
+        注。我们以分两步进行,先使用 \\
+        footnotemark 为脚注计数,再在合适\\
+        的位置用 footnotetext 生成脚注。\footnotemark\\
+        \hline
+    \end{tabular}
+    \footnotetext{出自《千字文》。}
+    \marginpar{\footnotesize 边注较窄,不要写过多文字,最好设置较小的字号。}
+    \section{特殊环境}
+    \subsection{列表}
+    有序列表
+    \begin{enumerate}
+        \item An item.
+        \begin{enumerate}
+            \item A nested item.\label{itref}
+            \item[*] A starred item.
+        \end{enumerate}
+        \item Reference(\ref{itref}).
+    \end{enumerate}
+    无序列表
+    \begin{itemize}
+        \item An item.
+        \begin{itemize}
+            \item A nested item.
+            \item[+] A `plus' item. + A ‘plus’ item.
+            \item Another item. – Another item.
+        \end{itemize}
+        \item Go back to upper level.
+    \end{itemize}
+    关键字环境
+    \begin{description}
+        \item[Enumerate] Numbered list.
+        \item[Itemize] Non-numbered list.
+    \end{description}
+    重定义无序列表的符号
+    \renewcommand{\labelitemi}{\dag}
+    \renewcommand{\labelitemii}{\ddag}
+    \begin{itemize}
+        \item First item
+        \begin{itemize} 
+            \item Subitem
+            \item Subitem
+        \end{itemize}
+        \item Second item
+    \end{itemize}
+    重定义有序列表的符号
+    \renewcommand{\labelenumi}{\Alph{enumi}>}
+    \begin{enumerate}
+        \item First item
+        \item Second item
+    \end{enumerate}
+    \subsection{对齐环境}
+    center、flushleft 和 flushright 环境分别用于生成%
+    居中、左对齐和右对齐的文本环境。
+    \begin{center}
+        Centered text using a
+        \verb|center| environment.
+    \end{center}
+    \begin{flushleft}
+        Left-aligned text using a
+        \verb|flushleft| environment.
+    \end{flushleft}
+    \begin{flushright}
+        Right-aligned text using a
+        \verb|flushright| environment.
+    \end{flushright}
+    还可以用以下命令直接改变文字的对齐方式:
+    \centering
+    Centered text paragraph.\par
+    \raggedright
+    Left-aligned text paragraph.\par
+    \raggedleft
+    Right-aligned text paragraph.\par
+    \begin{flushleft}
+        center 等环境会在上下文产生一个额外间距,%
+        而 \textbackslash centering 等命令不产生,只是改变对齐方式。%
+    \end{flushleft}
+    \raggedright
+    比如在浮动体环境 table 或 figure 内实现居中对齐,%
+    用 \textbackslash centering 命令即可,没必要再用 center 环境。
+    \subsection{引用环境}
+    \begin{description}
+        \item[quote] 用于引用较短的文字,首行不缩进\\
+        Francis Bacon says:
+        \begin{quote}
+            Knowledge is power.
+        \end{quote}
+        \item[quotation] 用于引用若干段文字,首行缩进\\
+        《木兰诗》:
+        \begin{quotation}
+            万里赴戎机,关山度若飞。
+            朔气传金柝,寒光照铁衣。
+            将军百战死,壮士十年归。
+
+            归来见天子,天子坐明堂。
+            策勋十二转,赏赐百千强。......
+        \end{quotation} 
+    \end{description}
+    \subsection{代码环境}
+    \begin{verbatim}
+        #include <iostream>
+        int main() 
+        {
+        std::cout << "Hello, world!"
+                    << std::endl;
+        return 0;
+        }
+    \end{verbatim}
+    \begin{verbatim*}
+        for (int i=0; i<4; ++i)
+        printf("Number %d\n",i);
+    \end{verbatim*}
+    要排版简短的代码或关键字\textbackslash verb ⟨delim⟩⟨code⟩⟨delim⟩\par
+    ⟨delim⟩ 标明代码的分界位置,前后必须一致,除字母、空格或星号外,%
+    可任意选择使得不与代码本身冲突,习惯上使用 | 符号。\par
+    \verb|\LaTeX| \\ 
+    \verb+(a || b)+ \verb*+(a || b)+    
+    \subsection{表格}
+    \subsubsection{列表格}
+    tabular 环境使用 ⟨column-spec⟩ 参数指定表格的列数以及每列的格式。\par
+    \begin{tabular}{lcr|p{6em}}
+        \hline
+        left & center & right & par box with fixed width\\
+        L    & C      & R     & P\\
+        \hline
+    \end{tabular}\par
+    @ 格式可在单元格前后插入任意的文本,%
+    但同时它也消除了单元格前后额外添加的间距。\par
+    \begin{tabular}{@{} r@{:}lr @{}}
+        \hline
+        1 & 1 &　one\\
+        11 & 3 & eleven\\
+        \hline
+    \end{tabular}\par
+    格式参数重复\par
+    \begin{tabular}{|*{5}{c|}*{2}{p{3em}|}}
+        \hline
+        one & two & three & four & five & Hello! \LaTeX & Hello!\\
+        1   & 2   & 3     & 4    & 5    & hello!        & \LaTeX\\
+        \hline    
+    \end{tabular}\par
+    辅助格式 > 和 <,用于给列格式前后加上修饰命令\par
+    \begin{tabular}{>{\itshape}r<{*}l}
+        %需要使用array宏包
+        \hline
+        italic & normal \\
+        column & column \\
+        \hline    
+    \end{tabular}\par
+    \begin{tabular}{>{\centering\arraybackslash}p{16em}}
+        \hline
+        辅助格式甚至支持插入 \textbackslash centering 等%
+        命令改变 p 列格式的对齐方式,一般还要加额外的命令 %
+        \textbackslash arraybackslash 以免出错。\\
+        \hline
+        \textbackslash centering 等对齐命令会破坏表格环境里 %
+        \textbackslash\textbackslash 换行命令的定义,%
+        \textbackslash arraybackslash 用来恢复之。%
+        如果不加 \textbackslash arraybackslash 命令,%
+        也可以用 \textbackslash tabularnewline 命令%
+        代替原来的 \textbackslash\textbackslash 实现表格换行。\\
+        \hline
+    \end{tabular}
+    \LaTeX 本身提供了 tabular* 环境用来排版定宽表格,但是不太方便使用,%
+    比如要用到 @ 格式插入额外命令,令单元格之间的间距为 \textbackslash fill,%
+    但即使这样仍然有瑕疵:
+    \begin{tabular*}{14em}{@{\extracolsep{\fill}}|c|c|c|c|}
+        \hline
+        A & B & C & D \\
+        \hline
+        a & b & c & d \\
+        \hline
+    \end{tabular*}
+    is this… a test
+    \appendix
+    \section{附录}
+\end{document}
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diff --git a/learning_LaTeX.pdf b/learning_LaTeX.pdf
index 598d314..aff3e8b 100644
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index e2a64a3..09dd945 100644
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diff --git a/learning_LaTeX.tex b/learning_LaTeX.tex
index 467c800..370f32d 100644
--- a/learning_LaTeX.tex
+++ b/learning_LaTeX.tex
@@ -2,6 +2,9 @@
 %表示用xelatex编译文件
 \documentclass[a4paper]{ctexart}
 \usepackage{array}
+\usepackage{tabularx}
+\usepackage{indentfirst} 
+\setlength{\parindent}{2em}
 \begin{document}
     \title{标题页}
     \author{Ryan\thanks{注脚}%
@@ -13,7 +16,7 @@
     一般用于紧跟\textbackslash maketitle 命令之后介绍文档的摘要\par
     中文\LaTeX{}排版。
     \section{用\LaTeX 排版文字}
-    {}分段\\换行\textbackslash\par
+    {}分段\\换行\textbackslash\textbackslash\par
     冒号``please press the `x' key.''\par
     连字符-用来组成复合词，\\%
     短破折号--用来连接数字表示范围，\\%
@@ -212,10 +215,34 @@
         也可以用 \textbackslash tabularnewline 命令%
         代替原来的 \textbackslash\textbackslash 实现表格换行。\\
         \hline
-    \end{tabular}
-    %\begin{tabular}
-        
-    %\end{tabular}
+    \end{tabular}\par
+    \LaTeX 本身提供了 tabular* 环境用来排版定宽表格,但是不太方便使用,%
+    比如要用到 @ 格式插入额外命令,令单元格之间的间距为 \textbackslash fill,%
+    但即使这样仍然有瑕疵:\par
+    \begin{tabular*}{14em}{@{\extracolsep{\fill}}|c|c|c|c|}
+        \hline
+        A & B & C & D \\
+        \hline
+        a & b & c & d \\
+        \hline
+    \end{tabular*}\par
+    tabularx 宏包为我们提供了方便的解决方案。它引入了一个 X 列格式,%
+    类似 p 列格式,不过会根据表格宽度自动计算列宽,多个X列格式平均分配列宽。%
+    X列格式也可以用 array 里的辅助 格式修饰对齐方式:\par
+    \begin{tabularx}{14em}{|*{4}{>{\centering\arraybackslash}X|}}
+        \hline
+        A & B & C & D \\ 
+        \hline 
+        a & b & c & d \\ 
+        \hline
+    \end{tabularx}\par
+    \subsubsection{横线}
+    \textbackslash cline\{i-j\} 用来绘制跨越部分单元格的横线:\par
+    三线表由 booktabs 宏包 支持,它提供了 \textbackslash toprule、%
+    \textbackslash midrule 和 \textbackslash bottomrule %
+    命令用以排版三线表的三条线, 以及和 \textbackslash cline 对应的 %
+    \textbackslash cmidrule。除此之外,最好不要用其它横线以及竖线:\par
+    
     \appendix
     \section{附录}
 \end{document}
diff --git a/learning_LaTeX.toc b/learning_LaTeX.toc
deleted file mode 100644
index 9068824..0000000
--- a/learning_LaTeX.toc
+++ /dev/null
@@ -1,18 +0,0 @@
-\contentsline {section}{\numberline {1}用\LaTeX 排版文字}{1}%
-\contentsline {section}{\numberline {2}目录和页眉页脚}{3}%
-\contentsline {subsection}{\numberline {2.1}子章节}{3}%
-\contentsline {subsubsection}{\numberline {2.1.1}子子章节}{3}%
-\contentsline {paragraph}{段落}{3}%
-\contentsline {subparagraph}{子段落}{3}%
-\contentsline {section}{标题不带编号}{3}%
-\contentsline {part}{第一部分\hspace {1em}分块}{3}%
-\contentsline {section}{\numberline {3}交叉引用}{3}%
-\contentsline {section}{\numberline {4}脚注和边注}{4}%
-\contentsline {section}{\numberline {5}特殊环境}{4}%
-\contentsline {subsection}{\numberline {5.1}列表}{4}%
-\contentsline {subsection}{\numberline {5.2}对齐环境}{5}%
-\contentsline {subsection}{\numberline {5.3}引用环境}{5}%
-\contentsline {subsection}{\numberline {5.4}代码环境}{5}%
-\contentsline {subsection}{\numberline {5.5}表格}{6}%
-\contentsline {subsubsection}{\numberline {5.5.1}列表格}{6}%
-\contentsline {section}{\numberline {A}附录}{6}%