Noun, Noun Phrase or Noun Clause as the subject of a finite verb

Noun:

Noun that expresses name of anything can be used in a sentence as the subject of a finite verb, as the object of a transitive verb, as the complement of a linking verb, as the object of a preposition, etc.

It may be a word, a phrase or a clause.

A.  Noun, Noun Phrase or Noun Clause as the subject

     of a finite verb-

When a word, a group of words (phrase), or a clause is used in a sentence as the subject of a finite verb is called noun, noun phrase, or noun clause respectively.

Examples:

1. Rahim is a good boy.

    ‘Rahim’ expresses the name of a person and is used as the subject of  finite verb ‘is’.  So it is a noun.

2. ‘Walking’ is good for health.

    ‘Walking’ tells us the name of an action and is used

      as the subject of  finite verb ‘is’.  So, it is a noun. 

3.The brush with a long handle’ is used to clean the ceiling.

  ‘The brush with a long handle’ tells us the name of a special  

  type of brush and is used as the subject of verb ‘is used’.

  So it is a noun phrase. 

4.‘To walk’ is a good exercise for an old man.

   ‘To walk’ tells us the name of an action and it is used

     as the subject of verb ‘is’.

   So, it is noun phrase specially noun infinitive.

5. ‘That the earth is a planet’ is known to all.

    ‘That the earth is a planet’ is a sub-ordinate clause and it

      is used as the subject of verb finite verb ‘is’.

      So, it is a noun clause.

6. ‘Early to bed/ rise’ is a good habit.

‘Early to bed/ rise’ tells us the name of an action in a particular

 time and it is used as the subject of finite verb ‘is’.

 So, it is a noun phrase.