|
Structure :
Positive :
Subject
|
+ |
Verb to be |
+ |
-ing form of the
verb |
I |
|
am |
|
doing |
He/She/It |
|
is
|
|
working |
We/you/they |
|
are |
|
staying |
Question :
Verb to be
|
+ |
Subject |
+ |
-ing form of the
verb |
Is |
|
he |
|
sleeping |
Are |
|
they
|
|
leaving |
Is |
|
it |
|
raining |
Short Answers:
Are you leaving now? |
Yes,
I am. |
No, I am not.
|
|
Yes, I'm |
No, I'm not |
|
|
|
Is it raining? |
Yes,
it is |
No, it is not. |
|
Yes, it's |
No, it isn't
|
|
|
|
Are they going ? |
Yes,
they are |
No,
they are not. |
|
Yes, they're |
No,
they aren't
|
|