Auxiliary Verb


‘Do’ and Have’ have two functions. First, as Ordinary Verb, Second, as Auxiliary Verb. When they function as Ordinary Verb, Do means ‘to carry out, to perform, etc’ and Have means  ‘to hold or maintain as a possession’. When they function as Auxiliary Verb, Do and Have don’t have particular meaning.

DO/DOES/DID as Ordinary Verb:
-     I do my regular exercise every morning before having breakfast.
-     Jane does the homework with her sister’s help.
-     We did the job well and satisfied the manager.

DO/DOES/DID sebagai Auxiliary Verb:
-     Do you like watching movie?
-     I don’t like watching movie.
DO is AuxiliaryVerb
LIKE is a verb (ordinary verb)

-     What does Sarah do after lunch?
-     Sarah doesn’t do anything after lunch.
-     When did Kevin finish the report?
DO, DOES and DID in the above examples serve as AuxiliaryVerb in forming negative and interrogative sentences with the structure  Do/Does/Did + Infinitive.
*Infinitive is the basic form of a verb

HAVE/HAS/HAD as Ordinary Verb:
-     Kevin has three sisters.
-     I have four cars and three motor cycles.
-     Sarah had a glass of fresh milk for breakfast this morning.

HAVE/HAS/HAD as Auxiliary Verb:
-     Kevin has read the book since 2 hours ago.
-     Kevin hasn’t finished reading the book.
HAS in the above examples serve as AuxiliaryVerb.
READ and FINISED are verbs (ordinary verbs) past participle/V3

-     I have repaired my car. It’s good to go now.
-     Sarah was hungry. She hadn’t had breakfast.
   Has Sarah had breakfast?
-     Have you finished your report?
-     I haven’t finished the report yet.
HAVE, HAS and HAD in the above sentences serve as Auxiliary Verbs in order to form perfect tense (have/has/had + V3).

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