Learn Hardcore Swahili: Juma anacheza mpira vyema.

It means "Juma is playing ball (or soccer) well." The sentence shows that Juma is engaged in playing a ball game and is doing so in a skilled or effective manner.

How is the verb anacheza formed, and what elements does it consist of?

The verb anacheza is built using a subject prefix and a tense marker along with the verb root. Here, a- is the third person singular subject prefix (indicating he/she), na- is the present continuous tense marker, and cheza is the root meaning "to play." Together, they express that Juma is in the act of playing.

Why does the noun mpira appear without an article like the or a?

Swahili does not use definite or indefinite articles. Mpira stands alone to mean "ball," with the context—such as discussion of a sport—clarifying whether it refers to a general ball or something more specific like a soccer ball.

What role does the word vyema play in the sentence?

Vyema functions as an adverb in this sentence, describing the manner in which Juma is playing. It translates to "well" in English, indicating that his playing is done in a skillful or proficient way.