Prefix - pre (before)

1.A prefix is a word or part of a word that is placed at the beginning of another word and that changes its meaning.

2.Before starting, the company's approval is a prerequisite. (sth that is necessary before sth else can happen or be donw)

3.Will you help me prepare for the party?(get ready in advance)

4.His premature death saddened the whole country.

5.Premarital sex is still regarded as immoral.

6.The students have some preliminary tests before the exam. (coming before sth more important)

7.The weather forecast predicts it will rain tomorrow. (describe a future happening in advance)

8.He felt he was predestined to lead his country to freedom. (to be fixed in advance by fate)

9.I remember the war but not the preceding years. (the years before)

10.We took precaution against my illness. (an action done in advance to avoid possible danger)