对可数名词的数量提问用How many。对不可数名词的数量提问用How much。How many的例句How many people were there？（有多少人？）；How much的例句How much water do you need？（你要多少水？）。
How many的.例句How many countries took part in the last Olympic Games？（有多少国家参加了上届奥运会？）；how much的例句How much will it cost, more or less？（这个大概得花多少钱？）。
