Unary Relationship

i have a problem with deriving sql statement which involve a unary relationship for one of the table.

i have tables with the following attributes:
studetn table: student_email (PK), student name
section table: section_no, section_semester (composite primary key)

the above has a a M:M relationship. (in my sql database, i will have a student_section table in btw).

There is also another evaluation table which records the student_email of student evaluating another student (this will be shown as team_member email)
evaluation table: evaluation_id (PK), student_email, teammember_email, studentinput

I use the following sql to get the student name for the student who is evaluating and the students being evaluated:
select form_id, temp_tb.student_email, temp_tb.student_name, teammember_email, student.student_name as teammember_name, studentinput
from (select form_id, student.student_email, student.student_name, teammember_email, studentinput
from student inner join form_evaluation
on evaluation.student_email=student.student_email) as temp_tb
inner join student
on temp_tb.teammember_email=student.student_email

After that, i need to join to the student_section table. However because a student can be in different sections, so the student section table will have 2 entries with the same studentemail, therefore the above query (when inner join with student_section table)actually retrieve the same result twice.

student section:
AAA@edu.com | section1 | 2005/2006
BBB@edu.com | section1 | 2005/2006
AAA@edu.com | section 2 | 2005/2006


final query results: evlauation table
formid| studentemail | teammemberemail | studentinput
11111| AAA@edu.com | BBB@edu.com | "very good"
11111| AAA@edu.com | BBB@edu.com | "very good"
11111| BBB @edu.com | AAA@edu.com | "ok"
11111| BBB @edu.com | AAA@edu.com | "ok"

how do i resolve the problem?