Agrouping of words that acts like a single unit inside a sentence but that does not contain both a subject and a verb is called a(n) a. clause. b. phrase. c. apostrophe. d. compound sentence.

the present continuous is a verb tense which is mainly used to indicates that an action is in progress at the moment of speaking.  

it is formed using: person + verb to be (am/is/are) +verb + - ing form  

example: i am studying at this moment .

in addition, the present continuous is also used in order to express things that will or will not happen in the near future.

example: i am having dinner with some friends tonight.

the speaker sometimes   uses it   to express that an action is repeated and it causes irritation on the part of the speaker

example: my sister is constantly complaining about everything.

he describes the bird as "stately."

i hope this

~ash belle