When to use a comma before and or but Gary5 months ago A comma when you join two complete sentences. Read more
For or Since Gary5 months ago For is the length of a period of time. Since is the start of a period of time. Read more
During or While Gary5 months ago No time period with during. While for two actions at the same time. Read more
By or Until Gary5 months ago Until for the continuing activity. By for the finish of the activity. Read more
