An adverb is a word that modifies a verb, an adjective, or another adverb. It often answers questions such as how, when, where, and to what extent. A preposition, on the other hand, is a word that shows the relationship between a noun or pronoun and other words in a sentence. It often indicates location, direction, time, or the relationship between two things. **

In Latin, the adverb "plus" does not decline like a regular noun or adjective. It remains the same regardless of the case, gender, or number of the noun it modifies. This is because "plus" is an indeclinable adverb, meaning it does not change form to match the noun it is modifying. **

In Latin, the adverb "plus" does not decline like nouns or adjectives. It remains the same regardless of the case, gender, or number of the noun it is modifying. This means that "plus" does not change form and stays the same in all contexts. **

No, "alten" is not an adverb. It is actually the comparative form of the adjective "alt" in German, which means "old" in English. Adverbs typically modify verbs, adjectives, or other adverbs, but "alten" does not perform this function. Instead, it is used to compare the age of two things or people. **

Without context, it is difficult to determine if "that" is being used as an adverb. "That" can be used as a demonstrative pronoun, adjective, or adverb depending on the sentence structure and the words it is modifying. For example, in the sentence "I didn't know that," "that" is used as a conjunction. However, in the sentence "She runs that fast," "that" is used as an adverb modifying the verb "runs." **

A special adverb is an adverb that does not fit into the typical categories of adverbs such as manner, time, place, or frequency. These adverbs are unique in that they do not describe how, when, where, or how often an action is performed, but rather add a specific detail or nuance to the verb. Special adverbs can include words like "only," "even," "just," "almost," and "hardly," among others. They serve to provide additional information or emphasis to the verb in a sentence. **

Yes, "it" can be an adverb. In English, "it" can function as an adverb to indicate a location, time, or degree. For example, in the sentence "I put the book on the table," "on" is an adverb indicating location, and "it" can be used to replace "on" to form "I put the book it." Similarly, in the sentence "She ran quickly," "quickly" is an adverb indicating degree, and "it" can be used to replace "quickly" to form "She ran it." **

An adverb is a part of speech that modifies or describes a verb, adjective, or another adverb. It provides more information about how, when, where, or to what extent an action is performed. Adverbs help to add detail and clarity to a sentence, allowing the reader or listener to better understand the action being described. **