latex中插入图片[通俗易懂]

\begin{figure}[h]
\centering
\includegraphics[width=4cm,height=5cm]{3}
\caption{这是一张图片，名字是3.png .}
\end{figure}

\begin{figure}[h]
\begin{minipage}[t]{0.45\linewidth}
\centering
\includegraphics[width=5.5cm,height=3.5cm]{10}
\caption{第一张图片的图题.}
\end{minipage}
\begin{minipage}[t]{0.45\linewidth}        %图片占用一行宽度的45%
\hspace{2mm}
\includegraphics[width=5.5cm,height=3.5cm]{11}
\caption{第二章图片的图题.}
\end{minipage}
\end{figure}

\begin{figure}[ht]
\centering
\subfigure[11-1]{               %小图题的名称
\includegraphics[width=4cm]{11-1}}
\hspace{0in}
\subfigure[11-2]{
\includegraphics[width=4cm]{11-2}}
\caption{两张图片公用的图题}
\end{figure}

\begin{figure}
\centering
{
\includegraphics[width=2.5cm]{10-1}}
\hspace{0in}    %每张图片中间空闲
{
\includegraphics[width=2.5cm]{10-2}}
\hspace{0in}
{
\includegraphics[width=2.5cm]{10-3}}
\hspace{0in}
{
\includegraphics[width=2.5cm]{10-4}}
\hspace{0in}
\caption{并排插入4张图片}
\end{figure}