不同
①a little副词用法，修饰动词或者比较级
He walked a little by himself in the garden.
他在花园里独自散了会儿步。
If you have to drive when you are tired， go a little more slowly than you would normally.
如果不得不疲劳驾驶，那就开得比平时慢一点。
a lot，adv.副词性短语，修饰动词、形容词或副词的比较级相当于 much
I'm a little better today.修饰better
修饰不可数，定语pron
如:.---Do you want some fish?--- A little (fish)，please.代词（不可数），一点儿（鱼肉
