直陈语气.
现在时.
单数. 复数.
1. I am, 1. We are,
2. You are, 2. You are,
3. He is. 3. They are.
过去时.
单数. 复数.
1. I was, 1. We were,
2. You were, 2. You were,
3. He was. 3. They were.
虚拟语气.
现在时.
单数. 复数.
1. (If) I be, 1. (If) we be,
2. (If) you be, 2. (If) you be,
3. (If) he be. 3. (If) they be
过去时.
单数. 复数.
1. (If) I were, 1. (If) we were,
2. (If) you were, 2. (If) you were,
3. (If) he were. 3. (If) they were.
祈使语气.
Be (you).
不定式.
(To) be.
Being.
分词.
不完全分词—Being.
完全分词—Been.
1. 动词 to be 与及物动词的完全分词一起用作辅助动词，来构成被动语态；如，I am hurt.
2. 动词 to be 与动词的现在分词一起用作辅助动词，来构成进行时；如，I am writing.
3. 动词 to be，不带另一个动词的分词时，用来表达（1）存在；如，Whatever is, is right. （2）充当系词（连接词）；如，Sugar is sweet. Whatever is, is right.
