【文章內(nèi)容簡(jiǎn)介】
We are (some) teachers. a/an表示一個(gè),只能用在單數(shù)名詞前,當(dāng)單數(shù)句變復(fù)數(shù)句時(shí),一定要把 a/an去掉,或改為 some/any。 例如: This is a book. These are (some) books. 例如: Is that a pen? Are those (any) pens? 當(dāng) 名詞作定語(yǔ) 或在介詞短語(yǔ)中作 介詞賓語(yǔ)充當(dāng)除賓語(yǔ)以外的其他成分時(shí),該 名詞不變 。 例如: He is a boy student. They are (some) boy students. (man 和 woman)除外 。 例如: She is a woman worker. They are (some) women workers. 單數(shù)句變?yōu)閺?fù)數(shù)句時(shí),句式不能改變,即單數(shù)句是疑問(wèn)句時(shí),變?yōu)閺?fù)數(shù)時(shí),仍然是疑問(wèn)句。 例如: What39。s this? What are these? 例如: She likes his bike.