The word "before" is used in English to indicate that something happened earlier in time than another event or that something is in front of another object or person. Here are a few examples of its usage:
1. Temporal Sequence: "I will finish my work before I go to bed."
2. Comparison: "She is shorter than her sister, but taller than her brother."
3. Position: "The cat is sitting before the door."
4. Condition: "I will not go to the party before I get my homework done."
5. Time Limit: "The sale ends before midnight."
"Before" can also be used in various phrases and idiomatic expressions, such as "before long," "before now," "before you know it," etc.
