Today is Saturday, and Mark always sleeps in on Saturdays, which explains why he is late for the game. There was no way for me to go to school because my son had a temperature of 102 degrees this morning. Sometimes it is difficult to identify facts and opinions. Abraham Lincoln was the most eloquent writer of all the U.S. Presidents. This is an opinion, but you have to know that eloquent is a descriptive word to for this to become clear.
Descriptive words are subjective, or state someone's opinion.
How to separate fact and opinion may be unclear when many people hold the same opinion. This is when it becomes important to understand what the word bias means. A bias is an opinion or an attitude we have for or against something. A bias usually stems from feelings rather than from rational thought. What is very important to realize is that ALL of us are biased.