Whats this ?Its an apple.What are these?They are two apples.-What are these?-Whats this?-Its a pen.-They are pens.-What are those?-Whats that?-Its an English book.-They are English books.backpackswatchesorangespens-What are these ?-Theyre .mapscases keys-What are those ?-Theyre . 可数名词是指能以数目来计算，可以分成个体的人或物，因此它有单数，复数两种形式。单数复数可数名词如何变化？规则变化不规则变化规则变化1 、一般情况词尾加s 浊辅音和元音后读z 清辅音后读s 例词 bag bags bgz cup cups kps row rows ruznamepenbookrulernames nemzpens penz books bks rulers ru:lz 2 、以s, x, ch, sh 等 结尾的词，
