Definition:
interjections are words or phrases that express strong emotion or sudden exclamations. They are often standalone and don't grammatically relate to the rest of the sentence.
Rules:
'thank you' as an interjection is used to express gratitude or appreciation towards someone for something they've done or provided.
Examples:
Thank you for holding the door for me.
Thank you! I've been looking for my keys everywhere.
I can't believe you did all this for me. Thank you.
Tips:
'Thank you' can be followed by various extensions, such as 'very much' or 'so much' to add emphasis to the gratitude. It can also be followed by a specific reason for the gratitude, e.g., 'Thank you for your help.' Avoid overusing 'thank you' in situations where it may not be necessary, as it can come off as insincere.