#my p.announce, .tt.pm li li a:hover+span { color: #f00; }
<html>
<head>
<style>
a:hover {
color: red;
}
#id {
}
.announce{
}
.tt {
}
.pm {
}
</style>
</head>
<body>
<div id="my">
<p class="announce tt pm">
<ul>
<li>
<ul>
<li>
<a>fbet</a>
<spane>rtbetber</spane>
</li>
</ul>
</li>
</ul>
</p>
</div>
</body>
</html>