Lesson10dance(现在分词）dancingwalk（现在分词）walkingsing（现在分词singingplay（现在分词）playingold（反义词）youngthis这个these这些that那个those那些potato土豆tomato西红柿photo照片many许多名词单数变复数1直接在名词后+spen--pens2名词末尾以sxshch结尾变复数时+esbus--busesbox--boxesdish--dishespeach--peaches3名词末尾以辅音字母+y结尾变y为i+esbaby--babies4名词末尾以o结尾有生命的+es无生命的+stomato--tomatoesphoto---photos5名词末尾以f或fe结尾变f或fe为ve再加sleaf---leavesknife--knives6单复同形sheep---sheepdeer---deerfish---fish7不规则变化内部变化man--menwoman--womenchild--childrenmouse--miceoo变eefoot---feettooth--teethgoose---geese
