[1] PRESENT SIMPLE
Active: SUBJECT + VERB 1 + OBJECT
Passive: SUBJECT + AM/IS/ARE + VERB 3 + BY AGENT
For examples,
Active: He designs a new logo.
Passive: A new logo is designed by him.
Active: They visit their parents.
Passive: Their parents are visited by them.
[2] PRESENT CONTINUOUS
Active: SUBJECT + AM/IS/ARE + VERB-ING + OBJECT
Passive: SUBJECT + AM/IS/ARE + BEING + VERB 3 + BY AGENT
For examples,
Active: She is finishing the homework.
Passive: The homework is being finished by her.
Active: They are building a new house.
Passive: A new house is being built by them.
[3] PRESENT PERFECT SIMPLE
Active: SUBJECT + HAVE/HAS + VERB 3 + OBJECT
Passive: SUBJECT + HAVE/HAS + BEEN + VERB 3 + BY AGENT
For examples,
Active: We have launched new courses this year.
Passive: New courses have been launched (by us) this year.
Active: He has upgraded the software.
Passive: The software has been upgraded by him.
[4] PRESENT PERFECT CONTINUOUS
Active: SUBJECT + HAVE/HAS + BEEN + VERB-ING + OBJECT
Passive: SUBJECT + HAVE/HAS + BEEN + BEING + VERB 3 + BY AGENT
For examples,
Active: He has been designing this application for years.
Passive: This application has been being designed (by him) for years.
Active: They have been constructing a new bridge since last year.
Passive: A new bridge has been being constructed (by them) since last year.
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