I am reading an English grammar book. According to this book many and much should only be used in negative and interrogative sentences. And they shouldn't be used in affirmative sentences.
According to the book, below sentences are grammatically wrong.
1. I know many men.
2. I bought much milk.
Please also explain whether below sentences are right or wrong.
3. Many men came.
4. Much milk was wasted.
According to the book 3rd and 4th sentences are right but I doubt so.
Please explain your answer. :-)