Final answer:
To rewrite 'Tell the students to assemble in the hall' in passive voice, it becomes 'The students are to be told to assemble in the hall.' Recognizing and using passive voice effectively involves understanding the role of the subject and the form of verbs used. Active voice is generally preferred for its clarity and vigor.
Step-by-step explanation:
The request 'Tell the students to assemble in the hall' when rewritten in passive voice becomes 'The students are to be told to assemble in the hall.' The transformation from active voice, where the subject performs the action, to passive voice, where the subject is acted upon, often involves the use of a form of the verb 'to be' along with the past participle of the main verb. Recognizing passive voice can be done by identifying whether the subject of the sentence is being acted upon, if there is a form of the verb 'to be,' and if the preposition 'by' is present or can be added to the sentence.
Effective writing typically favors active voice because it is more direct and vigorous. However, there are situations where passive voice is preferable, such as when the actor is unknown or irrelevant, or when the writer wants to emphasize the action rather than the actor. Understanding this distinction enhances students' writing abilities and allows them to make more informed choices in their diction and syntax.