In practical terms, focusing on a grammar topic
may be a challenge for the teacher and the student.
Using the Passive Voice as mere example, Larsen-Freeman
(2003, p. 47) states that “the ultimate
challenge of the passive voice is not form” because
“although it is a grammatical form, it is not the form that
presents the learning challenge”. In her example,
focusing on form, teachers may mistakenly choose to
introduce the passive as a transformed version of the
active, implying they are interchangeable or that all
passive sentences include the agent, which is definitely
not the case. A good alternative to teaching through
form could be to: