However, there are some exceptions:
* "au" can sometimes sound like "o" in words like "because" and "because of". This is due to historical changes in pronunciation.
* "au" can sometimes sound like "oo" in words like "fraud" and "gauche". This is a result of a French influence on English.
So, while "au" doesn't always make a "ou" sound, it's important to consider the specific word and its pronunciation.