shed在这里用的是过去式,shed的过去式和过去分词都是它本身,所以没有加s.
If an animal sheds its skin,or a plant sheds leaves,it loses them naturally.这里就有三单形式.
shed在这里用的是过去式,shed的过去式和过去分词都是它本身,所以没有加s.
If an animal sheds its skin,or a plant sheds leaves,it loses them naturally.这里就有三单形式.