Subject, Verb, Complement and Modifier

SUBJECT

The Subject is the agent of the sentence in the active Voice. Subject is the person or thing that does the action of the sentence, and subject normally precedes the verb.
Note: Every sentence in English must have a Subject
e.g.

Coffee is delicious
Milk contains calcium

The subject may be a noun phrase. A noun phrase is a group of words ending with a noun. (it CANNOT begin with a preposition).
e.g.

The book is on the table
That new red car is John’s

In some sentences there is not a true subject. However it and there can often act as pseudo-subjects and should be considered as subjects.
e.g.

It is a nice day today
There was a fire in that building last month

VERB

The Verb follows the subject, it generally shows the action of the sentence.
Note: Every sentence must have a verb
e.g.

John drives too fast.
They hate spinach.

The verb may be a verb phrase. A verb Phrase consists of one or more auxiliaries and one main
verb. The auxiliaries always precede the main verb.
e.g.

John is going to Miami tomorrow (auxiliary is; main verb going)
Jane has been reading that book (auxiliary has, been; main verb reading)

COMPLEMENT

A complement completes the verb. It is similar to the subject because it is usually a noun or noun phrase, However, it generally follows the verb when the sentence is in the active voice.
Note : Every sentence does not require a complement. The complement CANNOT begin with a preposition.
e.g.

He was smoking a cigarette
John bought a cake yesterday

MODIFIER

Modifier tells the time, place or manner of the action. Very often it is a prepositional Phrase. Prepositional Phrase is a group of words that begins with a preposition and ends with a noun.
Note: A modifier of time usually comes last if more than one modifier is present.
e.g.

of prepositional phrase.
in the morning, at the university, on the table

A modifier can also be an adverb or an adverbial phrase: Last night, hurriedly, next year, outdoors, yesterday
e.g.

John bought a book at the bookstore (modifier of place)
Jill was swimming in the pool yesterday (modifier of place and modifier of time)

Note :
The modifier normally follows the complement, but not always. However, the modifier, especially when it is a prepositional phrase, usually cannot separate the verb and the complement.
e.g.

She drove the car on the street (verb and complement)

Exercise.

Identify the subject, verb, complement and modifier in each of the following sentence. Remember that not every sentence has a complement or modifier.


Example: 

Jill / is buying / a new hat / in the store
(subject) (verb phrase) (complement) (modifier of place)

1. George is cooking dinner tonight
2. Henry and Marcia have visited the president
3. We eat lunch in this restaurant today
4. Pat should have bought gasoline yesterday
5. Trees grow
6. It was raining at seven o’clock this morning
7. She opened her book
8. Harry is washing dishes right now
9. She opened her book
10. Paul, William, and Marry were watching television a few minutes ago.

Answer:
1. George/ is cooking/ dinner /tonight
(subject) (verb phrase) (complement) (modifier of time)
2. Henry and Marcia/ have visited/ the president
(subject) (verb phrase) (complement)
3. We /eat/ lunch /in this restaurant /today
(subject) (verb phrase) (complement) (modifier of place)(modifier of time)
4. Pat /should have bought /gasoline /yesterday
(subject) (verb phrase) (complement) (modifier of time)
5. Trees /grows
(subject) (verb phrase)
6. It/ was raining /at seven o’clock this morning
(subject) (verb phrase) (modifier of time)
7. She /opened /her book
(subject) (verb phrase) (complement)
8. Harry /is washing /dishes /right now
(subject) (verb phrase) (complement) (modifier of time)
9. She /opened /her book
(subject) (verb phrase) (complement)
10. Paul, William, and Marry/ were watching /television /a few minutes ago
(subject) (verb phrase) (complement) (modifier of time)

Referensi :

diah_aw.staff.gunadarma.ac.id
http://simple.wikipedia.org/wiki/Verb
http://yebeblog.blogspot.com/2009/12/subject-verb-complement-modifier.html
http://adirahmsarche.blogspot.com/2014/03/subject-verb-complement-modifier-and.html
http://www.wordsmile.com/pengertian-contoh-kalimat-subject-verb-complement
http://nikenwp.blogspot.com/2015/03/subject-verb-complement-and-modifier.html
http://meginugrahawa.blogspot.com/2015/04/subject-verb-complement-and-modifier.html