<!doctype html>
<html>
<head>
<meta conten="text/html" charset="utf-8" />
<title>表格</title>
</head>
<body>
<table border="1" width="50%">
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
</tr>
<tr>
<td colspan="4">1</td>
</tr>
</table>
</body>
</html>
应该就是这样吧