Passive voice..

Simple Present 

V1 +s/es => To be (is,am, are) + V3  

• The teacher helps me. I  am  helped by the teacher.
•   The teacher helps Jane. Jane is helped by the teacher.
• The teacher helps us. We are helped by the teacher.

Present Perfect 

Have / Has + V3 => Have / has + Been V3

• The teacher has helped Joe. Joe has been helped  by the teacher.
• The teacher has helps us.  We have been helped by the teacher.