作者:郝廣春
[點擊一] 基本形式
be動詞有am, is, are三種形式。其使用方法可依據以下口訣:(I)我用am,(you)你用are, is連著他、她、它(he, she, it)。單數is,復數are。如: I am a doctor. You are a girl. She is at school now. This is a good book. Those are new desks.
[點擊二] 基本含義
be 動詞的基本含義是"是",有時也可不必譯出。如: The flag is red. 這面旗是紅色的。My father is forty-six. 我父親四十六歲。
[點擊三] 縮略形式
1. am, is和are與絕大多數主語或疑問詞有縮略形式,分別為: 'm, 's和 're。如:
I'm an English teacher. He's my good friend. They're some books. Where're the children?
2. is, are 與not可縮略成isn't和aren't。如: It isn't a map. You aren't in the same class.
[相關鏈接] 特別提醒: 1. this與is沒有縮略形式;am與not沒有縮略形式。
2. 在對以be動詞開頭的一般疑問句作簡略的肯定回答時,不能使用縮略形式。如:
-Is his hair brown?
-Yes, it is.(正)
-Yes, it's.(誤)
[友情鏈接] 特別的話送給特別的你
be動詞除了作系動詞外,還可作助動詞,典型用法之一就是與"動詞-ing"形式一起構成現在進行時,此時它沒有實際意義,變化規律同其作系動詞時完全相同。如: They are talking. He's walking. It isn't singing.