摘要：原因可能是：表达“程度强的”副词much，本义为“量多”限定词。若是非要“much+形容词”，则much有可能被误解为“量多”(限定词)，比如

下面两句可能被英语为母语者明白，但不地道

【例句1×】She is much beautiful.
【例句2×】She is very much beautiful.

原因可能是：表达“程度强的”副词much，本义为“量多”限定词。若是非要“much+形容词”，则much有可能被误解为“量多”(限定词)，比如

【例句3】She has much beautiful cloth. （她有很多漂亮的布料。）

注意【例句3】的含义不是“她有非常漂亮的布料”。

much可以强化形容词比较级的，如

【例句4】Henry's room is much bigger than mine. （亨利的房间比我的大得多。 ）[朗文当代英语词典]

【例句5】These shoes are much more comfortable. （这双鞋舒服多了。）[朗文当代英语词典]

【例句6】He's much older than she is. （他比她大得多。）[朗文当代英语词典]

【例句7】She's much better today. （她今天好多了。）[牛津高级学者辞典]

【例句8】You'd be so much happier if you could see yourself the way I see you. （如果你能像我一样看待自己，你会更快乐。）[柯林斯高级学者辞典]

这里的much不是强化形容词本身，而是强化比较级与原级之间相差的程度。

much可以放在too词前，然后再跟形容词或副词原级，如

【例句9】He was driving much too fast. （他开得太快了。）[朗文当代英语词典]

【例句10】The skin is much too delicate. （这皮肤太娇嫩了。） [柯林斯高级学者辞典]

【例句11】The soup was much too salty. （这汤太咸了。） [朗文当代英语词典]

【例句12】The other one was much too expensive.（另一个太贵了。）[牛津高级学者辞典]

【例句11到12】的much与too绑定再修饰形容词。

偶尔能见到not much至于形容词，如

【例句13】It's not much different from when I was young. （这和我年轻的时候没什么不同。）[朗文当代英语词典]

【例句14】I'm not much good at tennis. （我网球打得不太好。）[牛津高级学者辞典]

笔者猜测可能原因是：not不能否定限定词，所以随后much就不会解读成“量多”。

来源：昌裕教育