今天我们复习不定冠词a和an（一个）并学习一个新词组a lot of（许多）。An使用于以元音发音字母开头的单词，例如：

I eat an apple every day.（我每天吃一个苹果）I eat an egg every day.（我每天吃一个鸡蛋）而a则使用于其他可数名词，例如：I eat a tomato every night.（我每晚都吃一个西红柿）I eat a peach every night.（我每晚吃一个桃子）在修饰不可数名词时，我们有时可以加上数量词，例如：I drink a glass of milk every night.（我每晚喝一杯牛奶）I drink a glass of water every two hours.（我每两个小时喝一杯水）另外我们可以用a lot of（许多）来修饰可数名词或不可数名词：I eat a lot of apples every day.（我每天吃很多苹果）I drink a lot of milk every day.（我每天喝许多牛奶）I drink a lot of coffee.（我喝很多咖啡）I don’t drink a lot of water.（我不喝许多水）I don’t drink a lot of coffee.（我不喝许多咖啡）I don’t eat a lot of bread.（我不吃许多面包）I don’t eat a lot of peaches.（我不吃许多桃子）请试着回答以下问题：Do you drink a lot of water?（你喝很多水吗）Do you drink a lot of milk?（你喝许多牛奶吗）Do you eat a lot of fruit?（你吃许多水果吗）Do you eat a lot of vegetables?（你吃很多蔬菜吗）