【正文】
am a teacher. We are (some) teachers. a/an表示一個,只能用在單數(shù)名詞前,當(dāng)單數(shù)句變復(fù)數(shù)句時,一定要把 a/an去掉,或改為 some/any。yours。 第二人稱:單復(fù)數(shù),主賓格:全是 you, 第三人稱:單數(shù)(主格) he,she,it,復(fù)數(shù): they; 單數(shù)(賓格) him,her,it,復(fù)數(shù): them; 例如: She is a girl. 復(fù)數(shù): They are girls. I like her. 復(fù)數(shù) We like them. 指示代詞由單數(shù)變復(fù)數(shù) 單數(shù) this, 復(fù)數(shù) these。 單數(shù)(賓格) me, 復(fù)數(shù) us。 單數(shù)(名詞性物主代詞) mine,復(fù)數(shù) ours 第二人稱: your。 例如: This is my book. These are my books. 當(dāng)句中形容詞性物主代詞與句中的主語一致