chapter  25
Passive
Pages 5

In English, the passive involves a specific form of the auxiliary ‘to be’ and the past participle forms of the verb; it also often involves subject-object inversion and the use of ‘by’. For example, corresponding to the English active voice sentence:

1 He is writing a book

we have the passive formed in a rule-governed way as in 2:

2 A book is being written by him.