同学你好，该知识点来自沪江网校《Hitalk口语【外教1V1】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学好,
a lot
very much or very often
非常；经常
Your sister looks a lot like you.
你妹妹长得非常像你。
I'm feeling a lot better today.
今天我感觉好多了。
https://dictionary.cambridge.org/dictionary/english-chinese-simplified/lot?q=a+lot

much
a large amount or to a large degree
多（的），大量（的）
I don't earn much money.
我赚钱不多。
You haven't said much, Joan - what do you think?
你说得不多，琼——你怎么想？
I like her very much.
我非常喜欢她。
https://dictionary.cambridge.org/dictionary/english-chinese-simplified/much

另外, a lot of 还可以修饰可数或不可数名词, much修饰名词时只能修饰不可数名词;  更多例句可以在上面链接中查到;

祝好!