it is by the water fountain
The simple subject in the sentence is "mail." It is the noun that the sentence is about.
"The light was on" is a complete sentence. "On" is the adjective.
"Speeding" is a verb form that can be used as a gerund or present participle in a sentence. It can function as a noun or a verb, depending on how it is used in a sentence.
The word "cold" is the adjective in the sentence. It describes the type of wind that is blowing.
It is a descriptive adjective. Such as in this sentence: That star is the brightest star I have ever seen.
This is how you use yesterday in a sentence I went to the carnival yesterday afternoon
adverb - yesterday adjective - new
"That's yesterday's news..." uses 'yesterday' to qualify the pronoun 'news'.
Did you feel the tremor yesterday afternoon?
There was an equivalent fraction in math class yesterday afternoon.
That depends on the meaning and the context. Correct: * It was our last afternoon together before the end of the vacation. * Yesterday afternoon I talked to them about the problem. * There is no issue with the first sentence above. I believe we are discussing "last afternoon" in the context of a sentence like the second one above.* in that context, if we are talking today, before 12 noon, of an event that occurred yesterday in the afternoon, we say "last afternoon" because the event occurred during the "last" afternoon. However if we are talking today in the evening or in the night of the same event, we cannot say last "afternoon" because there has been another afternoon that has passed since that event occurred. In such a case we must say "yesterday afternoon". The same rule should apply for "last morning" and "yesterday morning".
Adding the suffix -ful makes rest and adjective. Example sentence: We had a restful afternoon reading by the fireplace.
On a Sunday afternoon my friend and I went walking down the park.
In that sentence, felt is a linking verb. It connects the subject, Rosemary, to the predicate adjective, sick.
Yesterday is a noun in that sentence.
"Yesterday" and "today" can act as adverbs, adjectives, and even nouns, depending on where they are placed in a sentence. Here are some examples: Adverb: Yesterday we went to the bank. Adjective: I gave you the money yesterday morning. Noun: I wish it was yesterday. Adverb: Today is a gorgeous day! Noun: I will finish writing the essay today after school. As for the adjective form of today, it is seldom used.
The verb tense in the sentence is past tense, as indicated by the word "arrived."