The passive voice
Step1: Activity 1 on Page 33.
a. 一般现在时:am/is/are+p.p.
b.&c. 一般过去时:was/were+p.p.
d. 一般将来时:will be +p.p.
e.现在完成时:has/have been+p.p.
过去将来时:would be + p.p.
现在进行时:am/is/are + being +p.p.
过去进行时:was/were + being + p.p.
过去完成时:had + been + p.p.
谓语形式