1、 四年级上册 语法专题:可数名词变复数规则变化 可数名词定义:指能以数目来计算,可以分成个体的人戒物。可数名词有“单数” 与“复数”之分。 1. 单数 数量是 1,如:a book (一本书) ,an apple (一个苹果)等。 2. 复数 数量超过 1,如:two pens(两支钢笔) ,some boys(一些男孩)等。 不过要注意,可数名词复数的变化形式比较多样,让我们来仔细看一看。 可数名词变复数规则变化: 1. 一般情况下直接在末尾加 s,如: boy - boys,cat - cats,horse - horses 2. 以 s, x, ch, sh 结尾,加 es,如: bus
2、 - buses,fox - foxes,match - matches 3. 以辅音字母+y 结尾,将 y 变 i,再加 es,如: baby - babies,cherry - cherries,candy - candies 4. 以 f/ fe 结尾,将 f/ fe 变成 v, 再加 es, 如: leaf - leaves,scarf - scarves,knife - knives (但也有一些例外的词,如:roofs, chiefs, beliefs 等) 5. 一般以 o 结尾的有生命的单词,复数加 es, 如: tomato- tomatoes,mango - mangoes
3、,potato - potatoes (但也有一些例外的词,如:bamboos 等) 可数名词变复数规则变化 专项习题: 一、写出以下单词的复数形式。 dish toy potato dog ruler fly piano bag fox 二、用所给单词的适当形式填空。 1. - How many (butterfly) can you see? - I can see three. 2. There is (duck) in the pond. 3. There are some (leaf) on the floor. 4. I like (mango). They are yummy.
4、5. I want to eat some (candy). 6. There are two (watch) in the bag. 7. Give me a (tomato) please. 8. There is some (water) in the cup. 9. There are two big (box) in my room. 10. He likes (orange) very much. 参考答案: 一、写出以下单词的复数形式。 dish - dishes dog - dogs piano - pianos toy- toys ruler - rulers bag - bags potato - potatoes fly - flies fox - foxes 二、用所给单词的适当形式填空。 1. butterflies 6. watches 2. a duck 7. tomato 3. leaves 8. water 4. mangoes 9. boxes 5. candies 10. oranges