This is called the "predicate" and a sentence is not a sentence without one.
I will call is a verbal phrase from the verb "to call" - it is the first person future tense.Will + verb for the future is the same for all persons. So there is no need to call it first person future.
The noun or pronoun in a prepositional phrase is the object of a preposition.
Generally, the last word of a prepositional phrase is the "object of the preposition."
There is no special name for it, unless 'so' is at the end of a verb phrase, making it a phrasal verb.
That word is called a preposition. Prepositions are used to show the relationship between the noun or pronoun and other words in a sentence.
You call it a palindromic sentence. If it isn't a sentence it is a palindromic phrase or palindromic sequence.
alliteration
Grawlix plural: Grawlixes
I will call is a verbal phrase from the verb "to call" - it is the first person future tense.Will + verb for the future is the same for all persons. So there is no need to call it first person future.
The noun or pronoun in a prepositional phrase is the object of a preposition.
Generally, the last word of a prepositional phrase is the "object of the preposition."
Able was I ere I saw Elba --- I don't know what you call it though A pallindromic sentence .
To me, it's urgent that I answer this question forthwith. It's urgent that you return my call as soon as you get my message.
It is not a full sentence. It doesn't have a subject or verb. You would probably call it a prepositional phrase. They stepped into a world of unimagined complexity and beauty. ( subject = they, verb = stepped)
an exclamatory sentence
No, you have the verb incorrect. It should be "I don't know what KEEPS you so busy that you cannot pick UP my call"
To receive a telephone call.