... present participle ϭ progressive
be ϩ past participle ϭ passive
A sentence can even be both progressive and passive so long as it meets the requirements: be ϩ
present participle (Pres Part) for ... and be ϩ past participle (Past Part) for the passive.
Here is an example of a sentence with both:
The job is being contracted out to a fi rm in Singapore.
be ϩ Pres Part be ϩ Past Part
In o...