1、基本格式：
<table>//定义一个完整的表格
<tr>//一行
<td></td>//一个单元格
<td></td>
<td></td>
</tr>
</table>
用表格实现成绩登记表：
<html>
<head>
<meta charset="utf-8">
<title>成绩登记表格</title>
</head>
<body>
<table width="600" border="1" align="center" cellpadding="5" cellspacing="3">
<!--
可以 定义表格的大小，背景，边框，单元格间距等
-->
<caption>成绩登记表</caption>
<tr>
<th bgcolor="blanchedalmond "align="middle" >序号</th> <!-- <th></th>标记设置-->
<th bgcolor="blanchedalmond "align="middle ">学号</th>
<th bgcolor="blanchedalmond "align="middle ">姓名</th>
<th bgcolor="blanchedalmond "align="middle ">平时成绩</th>
<th bgcolor="blanchedalmond "align="middle ">期末成绩</td>
<th bgcolor="blanchedalmond "align="middle ">学期总成绩</th>
</tr>
<tr>
<td align="middle ">1</td>
<td align="middle ">20100300201</td>
<td align="middle ">张小丽</td>
<td align="middle ">95</td>
<td align="middle ">95</td>
<td align="middle ">95</td>
</tr>
<tr>
<td bgcolor="grey "align="middle ">2</td>
<td bgcolor="grey "align="middle ">20100300202</td>
<td bgcolor="grey "align="middle ">李宁</td>
<td bgcolor="grey "align="middle ">90</td>
<td bgcolor="grey "align="middle ">88</td>
<td bgcolor="grey "align="middle ">89</td>
</tr>
<tr>
<td align="middle ">3</td>
<td align="middle ">20100300203</td>
<td align="middle ">刘梅</td>
<td align="middle ">98</td>
<td align="middle ">92</td>
<td align="middle ">95</td>
</tr>
<tr>
<td bgcolor="grey "align="middle ">4</td>
<td bgcolor="grey "align="middle ">20100300204</td>
<td bgcolor="grey "align="middle ">王刚</td>
<td bgcolor="grey "align="middle ">98</td>
<td bgcolor="grey "align="middle ">90</td>
<td bgcolor="grey "align="middle ">94</td>
</tr>
<tr>
<td align="middle ">5</td>
<td align="middle ">20100300205</td>
<td align="middle ">郑军</td>
<td align="middle ">90</td>
<td align="middle ">85</td>
<td align="middle ">87</td>
</tr>
<tr>
<td bgcolor="grey "align="middle ">6</td>
<td bgcolor="grey "align="middle ">20100300206</td>
<td bgcolor="grey "align="middle ">杨波</td>
<td bgcolor="grey "align="middle ">80</td>
<td bgcolor="grey "align="middle ">80</td>
<td bgcolor="grey "align="middle ">80</td>
</tr>
</table>
</body>
</html>
2、课程表
<html>
<head>
<meta charset="utf-8">
<title>成绩登记表格</title>
</head>
<body>
<table width="600" border="1" align="center" cellpadding="5" cellspacing="3">
<!--
可以 定义表格的大小，背景，边框，单元格间距等
-->
<caption>课程表</caption>
<tr>
<th bgcolor="blanchedalmond " align="middle">星期一</th>
<th bgcolor="blanchedalmond " align="middle ">星期二</th>
<th bgcolor="blanchedalmond " align="middle ">星期三</th>
<th bgcolor="blanchedalmond " align="middle ">星期四</th>
<th bgcolor="blanchedalmond " align="middle ">星期五</td>
</tr>
<tr>
<td>数据结构</td>
<td>数据库</td>
<td rowspan="2">计算机组成原理</td>
<td>大学体育</td>
<td>大学英语</td>
</tr>
<tr>
<td colspan="2">数据库</td>
<td>数据结构</td>
<td>大学英语</td>
</tr>
</table>
</body>
</html>
利用rowspace属性和colspace属性的修改，分别实现跨行和跨列。