1. 一般询问(需要多少牛奶)
How much milk...?
(牛奶是不可数名词,用 how much 而非 how many)

例句:
How much milk do we need?(我们需要多少牛奶?)
How much milk should I buy?(我应该买多少牛奶?)
2. 询问具体量(如毫升/杯/瓶)
How many... of milk?
(若涉及可数单位,用 how many + 量词)
例句:
How many bottles of milk do you want?(你要几瓶牛奶?)
How many cups of milk are in the recipe?(食谱里需要几杯牛奶?)
3. 日常场景常用表达
购物时:
How much milk is left?(还剩多少牛奶?)
How many liters of milk should I get?(我应该买多少升牛奶?)
烹饪时:
How much milk goes into the sauce?(酱汁里要放多少牛奶?)
Do I need a lot of milk?(需要很多牛奶吗?)
饮品定制(如咖啡):
How much milk would you like in your coffee?(你的咖啡要加多少牛奶?)
4. 回答示例
We need 500ml of milk.(需要500毫升牛奶。)
Just a little milk, please.(请加一点牛奶。)
Two cups should be enough.(两杯应该够了。)
语法注意
牛奶(milk)是不可数名词,因此:
✅ 正确:How much milk...?
❌ 错误:How many milk...?
但涉及可数单位时:
✅ 正确:How many bottles/cups/liters of milk...?
根据具体场景选择合适的表达即可!