What is subject and predicate? Also what is sentence pattern?

An explanation about SUBJECT and PREDICATE section in a sentence.

There would be two sections in a sentence.

Subjective and optional.

Subjective is frequently called SUBJECT section. It
contains Subject.
Who does,  or who is done. Is subject section.

Optional is frequently called predicate section.
What / How/where /when does he do an action?

There are some confusions among Grammarians, whether verb belongs to Subject section or predicate section.

Actually Verb is the main part of a sentence, But if a sentence is parted as two, verb belongs to predicate. If it is parted as three, verb gets its own section.

Nivetha writes
Nivetha - Subject
Writes- Though it's a verb, it's predicate.

Nivetha writes a letter to her friend
Nivetha - is subject.
Others are predicate.

The talk above is only about SUBJECT and PREDICATE.

You may have some confusion, then What is sentence pattern?
That is different.

A sentence can be parted as some compartments, such as SUBJECT, VERB, DIRECT OBJECT, INDIRECT OBJECT, ADJUNCT and COMPLEMENT. These are patterns of a sentence.

Nivetha writes -  S V
Nivetha writes a letter -  S V O.
Nivetha writes a letter to her friend - S V O IO
Nivetha writes a letter to her friend using her computer -  S V O IO A
Nivetha is my student - S V C.

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A. V. MAHENDIRAN
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