
海豚居住的地方:ocean, river 海豚的身體部分: beak,flipper, fin, tail, blowhole 海豚的動(dòng)作: dive, swim, hunt, play, leap,jump, breathe可數(shù)名詞的復(fù)數(shù)形式,例如: beak一beaks 動(dòng)詞的一般現(xiàn)在時(shí)第三人稱單數(shù)形式,例如: have-has不定冠詞a的用法,例如: a fin;定冠詞 the 的用法,例如: the topThere be 句型,例如: There are many kinds of dolphins.To have 句型,例如: This dolphin has spots. 一般現(xiàn)在時(shí)的用法,例如:Some dolphins live in oceans.