1.How many ,How much
how much?
(=used to ask the price of something)
How much are the tickets?
as：Can you tell me how much the repairs will cost?
how many
as：How many ventricles of heart does a man have?
每个人有几个心室？
How many inches of rain fell last year?
去年的雨量是多少英寸？
How many ribs does a man have?
一个人有几条肋骨？
how much後面跟不可数名词，how many後面跟可数名词
how many times 多少次，time 加“s”表示次数
how many 后加具体名词,抽象名词用how much
eg. How much can I get? 我能得到多少?

除了表示价格，how much可以提问不可数名词的数量，比如 how much milk is there in the bottle？