It may seem like an impossibility, but it is actually quite common for a single word to serve as a morphemic noun and a syntactic adverb in the same sentence. Morphemes are the smallest meaningful units of language, and syntactic adverbs are words that modify an entire sentence or clause. The best way to explain how this can happen is through an example.

Consider the sentence, “He quickly read the book”. The word “quickly” is a morpheme because it is the smallest unit of meaning, and it also acts as an adverb because it modifies the verb “read”. This means that the same word can be both a noun and an adverb in the same sentence.

Another example is the sentence, “He hastily acted”. In this sentence, the word “hastily” is a morpheme because it is the smallest unit of meaning, and it is also a syntactic adverb because it modifies the verb “acted”. So, in this example, the same word is both a noun and an adverb in the same sentence.

What is even more interesting is that the same word can also serve as both a noun and an adjective in the same sentence. For instance, consider the sentence, “He quickly put the book away”. In this sentence, the word “quickly” is a morpheme, and it is also an adjective because it modifies the verb “put”, making it an adverb. So, the same word can be both a noun and an adjective in the same sentence.

In conclusion, it is quite common for a single word to serve as both a noun and an adverb or adjective in the same sentence. This is because morphemes are the smallest units of meaning and syntactic adverbs or adjectives modify the entire sentence or clause. Examples of this phenomenon can be seen in sentences such as “He quickly read the book” and “He hastily acted”.