how 用来提问，many 指多个可以逐个数出的事物。
可数事物的数量
quantity
neutral
用来询问或说明人数，或可逐个数出的事物的数量。
示例
- How many apples do we need?我们需要多少个苹果？
- How many people live here?这里住着多少人？
- Can you count how many chairs there are?你能数数有多少把椅子吗？
- How many days are in a week?一周有多少天？
- Tell me how many tickets you bought.告诉我你买了多少张票。