Be as an ordinary verb

Be is used both as a principal verb and as an auxiliary verb.

Be as a principal verb

Linking verb

Be and its forms (is, am, are, was and were) are usually used to link the subject with a following word.

·         Alice is an advocate.

·         Mary is very intelligent. 

·         You are wonderful. 

·         He was angry. 

To express a command or request

Be can be used to express a command or request.

·         Be quite. 

·         Don't be silly. 

·         Be off. 

·         Be a good girl. 

Special uses of Be

Be is used in a number of expressions about physical feelings (hunger, thirst etc.) and physical conditions (age, size, colour etc.).

·         I am Manju. 

·         She is 25. 

·         He is an architect. 

·         We are happy. 

·         It is cold today. 

·         I am thirsty. 

·         Are you hungry? 

·         It is very cold. 

·         He is tall. 

·         She is fair.