What are the subject(s), verb(s), and object(s) of this sentence?

Question

My mother's countenance could not unfrown itself.

Answer 1

My mother's countenance is the subject. It is a noun phrase subject. 

As for the verb, could not unfrown itself is the verb phrase predicate in which could not unfrown is the main verb phrase. In the verb phrase, could is an auxiliary, and unfrown is a verb.

The object is itself. In this sentence, the direct object is a reflexive pronoun, itself, that refers back to the subject.

 

 

Answer 2

The simple subject is "countenance".  The verb is "could unfrown".  ("Not" is an adverb.)  The verb is also known as the simple predicate.  And, the direct object is "itself".  The complete subject is "my mother's countenance".  And, the complete predicate is "could not unfrown itself".

Answer 3

My mother's countenance could not unfrown itself.

 

It is sometimes useful to locate the simplest forms of the subject, verb, and noun.

 

Subject noun--countenance (modified by possessive noun working as adjective, "mother's", which is modified by possessive pronoun "my")

            

Verb--could unfrown  (modified by adverb "not")

 

Object--itself