這兩個短語的意思是壹樣的，都是“和……壹樣多”。
區別在於“as many as”修飾可數名詞。而“as much as”修飾不可數名詞
其實很好記，這兩個短語的區別也就是many和much的區別，many 修飾可數名詞，而much修飾不可數名詞。
釋義
as many as
英 [?z ?meni ?z]
美 [?z ?meni ?z]
多達；和...壹樣多；多至
雙語例句
1、She could download?as?many?pictures?as?she liked.
她可以下載任意多的圖片。
2、There are over four times as many farmers' markets in the US as there were 20 years ago.
美國農貿市場的數量是20年前的四倍多。
3、You can choose as many clubs as you like.
妳可以選擇任何妳喜歡的俱樂部。
as much as
英 [?z m?t z]
美 [?z m?t z]
即使；雖然
雙語例句
1、If they can't, they may have to pay as much as $1, 200 as a fine (罰款).
如果他們不能，他們可能不得不支付高達1200美元的罰款。
2、There is an amazing world out there, and it needs our children as much as they need it.
外面有壹個神奇的世界，它需要我們的孩子，就像他們需要它壹樣。
3、Knowledge as much as possible and keep improving myself.
盡可能多地學習知識，不斷提高自己。
總結
這個區別與many和much的用法區別類似。
as many as的主語是可數名詞 其謂語動詞用單數。
as much as的主語是不可是名詞 其謂語動詞用復數。
as much as常用在“雨量、水量、時間量、重量、錢數、價格”等方面,表示總量和單位量的'大小；as many as 常用在人或物的具體數量前,側重於具體數目,意思是“和……壹樣多”,“多達……”。