An interjection is a word or phrase used to express emotions or feelings, such as surprise, joy, or excitement. It adds emotion or emphasis to a sentence and often stands alone or is followed by an exclamation mark.

Learning about interjections can benefit someone learning English by making their language more expressive and engaging. By understanding and using interjections correctly, learners can better convey their emotions in conversations or writing.

Additionally, interjections help to make language more colorful and lively, allowing learners to express themselves more effectively. By incorporating interjections into their language skills, English learners can enhance their communication abilities and connect more authentically with others.