not much better. much better 是什么意思

两个都是比较级

not much better 表示：并不比...好
much better 表示：比...好（此处倾向于使用句中的动词表示比较）

如：
His position was not much better than mine and I knew that he was uneasy and insecure.(他的处境并没有比我好得多，而且我知道他是不安的和害怕的。)
Mary sings much better than Helen.（玛丽唱得比海伦好。）

not much better是指(一个比另一个)要更好一点点。
much better是指（一个比另一个）要更好很多。