名词复数:
1.teeth 2.buses 3.stamps 4sheep不变 5.leafs 6.tomatoes 7.cats 8.boys 9.foxes 10.dictionaries 11.children 12.shops 13.mouses 14.ship不变
现在分词:
1.stopping 2.drawing 3.shopping 4.listening 5.swimming 6.staying 7.running 8.sitting 9.collecting 10.making 11.going 12.coming