1，大家知道，a little 用于修饰比较级的用法比较广泛。如：

The paper should be a little thicker. 这纸应该再厚一点儿。

Can’t you walk a little faster? 你不能走得快一点儿吗?

Do work a little harder. 务必请你工作再努力一点吧。

Couldn’t you come a little earlier? 你是否能提前一些日子来?

I wish you would stay a little longer. 我希望你再待一会儿。

Do the vegetables a little longer. 让蔬菜煮的时间长一点。

She was feeling a little better than usual. 她感到比平时好一点了。

It’s a little colder today than it was yesterday. 今天比昨天冷一点儿。

You are a little fatter than when I saw you last. 你比我上次见你时胖点了。

A little more slowly. 再慢一点(from www.yygrammar.com)。

You might tune that wireless a little lower, children. 你们还是把那收音机开小一点儿吧，孩子们。

2，但是，副词little修饰比较级时，其用法比较有限，主要用于修饰better和more：

1. little better：其意为“好不了多少”，相当于not much better。如：

His second suggestion was little better than his first. 他的第二条建议比第一条好不了多少。

His legs were in little better shape than they had been the year before. 他的双腿与前一年相比没有多少好转。

2. little more (than)：其意为“只”“只不过”。如：

He was little more than a child when his father died. 他父亲去世时，他差不多还是个孩子。

Aid to the Third World is at present little more than a drop in the ocean. 目前对第三世界的援助不过是杯水车薪。

He left school with little more than a basic education. 他只接受了点基础教育就退学了。