Purpose
By the end of this lesson, you will be able to correctly distinguish formal and informal English and choose the appropriate register for a given situation.
Lesson Explanation
Register refers to how formal or informal language is. English genuinely shifts vocabulary and structure depending on the situation:
Formal: I would like to request additional information. Informal: Can you send me more info? Formal: I am writing to inform you that... Informal: Just so you know...
Formal register avoids contractions (I am, not I’m) and uses more complete, structured sentences. Informal register embraces contractions and casual phrasing.
A genuinely important practical skill: choosing which register fits the actual situation — a job application email needs formal register; a text to a close friend needs informal register. Using the wrong register in either direction creates a real, noticeable mismatch.
Practice Questions
1. What does “register” refer to?
View Answer
How formal or informal language is.
2. Does formal register typically use contractions?
View Answer
No, it typically avoids them.
3. Does informal register typically use contractions?
View Answer
Yes.
4. Rewrite formally: “Can you send me more info?”
View Answer
Could you please send me additional information?
5. What kind of situation genuinely calls for formal register?
View Answer
A job application, formal email, or professional context.
6. What kind of situation genuinely calls for informal register?
View Answer
Texting a close friend, casual conversation.
7. What can happen if you use the wrong register for a situation?
View Answer
A noticeable mismatch that affects how the message is received.
8. Rewrite informally: “I am writing to inform you that the meeting is postponed.”
View Answer
Hey, just so you know, the meeting got pushed back.
9. Is “I’m” a formal or informal contraction?
View Answer
Informal.
10. Is a job application email formal or informal?
View Answer
Formal.
11. Is texting a close friend formal or informal?
View Answer
Informal.
12. What is one genuine structural difference between formal and informal register?
View Answer
Formal uses complete, structured sentences and avoids contractions; informal embraces contractions and casual phrasing.