how to use active sentence and passive sentence past form

HOW TO USE ACTIVE SENTENCE AND PASSIVE SENTENCE PAST FORM

In the active voice, do something is the subject of the sentence and anything that receives the action is the object. Most of the sentences in the English language is an active sentence. Subject/something action] + [Verb/kata kerja] + [Object/ Something to receive act]

• Example :  The teacher(Subject) teachs(Verb) the students(Object)

In the passive voice, something that receives the action is the subject of the sentence and something to take action (optional, can be written or not) written near the end of a sentence. We can use the passive voice if we think that something that receives the action is more important or should be emphasized to the listener. we can also use the passive voice if we don't know who is doing the action or if we don't to mention who is doing the action. [Something receiving action] + [be] + [past participle (verb 3) of the verb] + [by] + [something actions]

• Example :  The students(Subject) are(be) taught(verb3) by the teacher.

ACTIVE

PASSIVE

PAST CONTINOUS	The security was helping the customer when the thief came into the bank.	The customer was being helped by the security when the thief came into the bank.
PAST SIMPLE	Samadi repaired the radio.	The radio was repaired by Samadi.
PAST PERFECT	Gerry had repaired many computers before he received his license.	Many computers had been repaired by Gerry before he received his license.