Adverbs of frequency tell us how often something happens. They are essential for talking about routines, habits, and schedules.

The Most Common Adverbs of Frequency

• 100%: Always
• 90%: Usually
• 70%: Often / Frequently
• 50%: Sometimes
• 10%: Rarely / Seldom
• 0%: Never

Where do they go in a sentence?

Rule 1: Before the main verb.
Example: I always wake up at 7 AM.

Rule 2: After the verb 'to be' (is, am, are, was, were).
Example: She is usually late for class.