Passive voice is not common in Tamil. So it should be avoided in conversation.

Conversion of active voice into passive voice

Table 5.1 Simple Present Tense

Table 5.2                 Simple Past Tense

Table 5.3         Present Continuous Tense

Table 5.4                      Past Continuous Tense

Table 5.5                                Present Perfect Tense

Table 5.6                   Simple Future Tense  

Table 5.7  Some more examples of interchange of active and passive voices