As

The word 'as' serves multiple grammatical functions. It can be used as a conjunction, adverb, preposition, or a relative pronoun. as a conjunction, it introduces clauses, often expressing a cause, time, manner, or comparison. as an adverb, it functions as a qualifier, indicating degree or extent. as a preposition, it signifies a role, function, or identity. 'As' also functions as a relative pronoun, linking a phrase to a noun it describes. Its versatile nature allows for diverse sentence structures, adding nuance and precision in communication.

As meaning with examples

• As she walked down the street, she noticed the vibrant colours of the autumn leaves. She was mesmerized by the dance they did in the wind and enjoyed it. It's a common sight as the season changes. It's a beautiful time of year as all life goes on. We are always moving, as the planet goes.
• He is as tall as his father; this is a trait he got. His mother, as well, is tall for a woman, as is his sister. This fact will always define them as a group. as a family, they stand out when compared to others. In this instance, the as functions as a comparator.
• As a doctor, she is expected to maintain a certain degree of professionalism. She loves the job as there are many cases. as she serves the population, she finds fulfilment. as she develops in her career, she sees progress as an honour. as time goes, people will appreciate her efforts.
• He ran as fast as he could. He could run and also breathe as well. He was able to do so as he had worked hard. as he had worked hard, he saw results quickly. It was as a result that he was the best.
• She treated him as though he were her own child. as though he were hers to command. as though, in other words, he were her ward. She wanted to always be the one who would guide and teach. as she knew, she was on the right path.