Welcome to the World of Non-Defining Relative Clauses!
Hi there! Have you ever wanted to add a little "extra flavor" to your sentences? Sometimes, we want to give more information about a person or a thing without starting a whole new sentence. That is exactly what non-defining relative clauses do!
Think of them as "bonus information" tags. They tell us more about something, but even if we took them away, the sentence would still make perfect sense. Don't worry if this seems a bit tricky at first—by the end of these notes, you'll be a pro at using them!
1. What is a Non-Defining Relative Clause?
A non-defining relative clause adds extra information to a sentence. This information isn't necessary to understand who or what we are talking about. We already know the specific person or thing; the clause just tells us something interesting about them.
The Everyday Analogy: The Gift Tag
Imagine you receive a birthday gift. The gift itself is the main sentence. The little tag hanging off it that says "wrapped in shiny paper" is the non-defining relative clause. You still have the gift even if you rip the tag off, but the tag gave you a little more detail!
Example:
Main sentence: My English teacher is very kind.
With extra info: My English teacher, who grew up in Canada, is very kind.
If we remove "who grew up in Canada," we still know exactly who is kind: my English teacher. The information is just a "bonus."
Key Takeaway:
Non-defining relative clauses give extra detail that we could live without. They describe a specific person or thing we already know.
2. The "Comma Sandwich" Rule
One of the easiest ways to spot these clauses is by looking for commas. In writing, we must separate this "extra" information from the rest of the sentence using commas.
The Rule:
1. If the clause is in the middle of the sentence, put a comma before and after it.
2. If the clause is at the end of the sentence, put a comma before it and a full stop at the end.
Example (Middle):
The Peak, which is a famous tourist spot, offers a great view of Hong Kong.
Example (End):
I live in Shatin, which is a busy district.
Memory Trick: The "Handcuff" Commas
Think of the commas as handcuffs. They "lock" the extra information in place so it doesn't get mixed up with the important parts of the sentence!
3. Choosing the Right Relative Pronoun
To start our "bonus info" clause, we need a special word called a relative pronoun. Here are the ones we use for non-defining clauses:
1. Who: Used for people.
Example: Mr. Wong, who is our principal, loves playing basketball.
2. Which: Used for things or animals.
Example: My cat, which is five years old, sleeps all day.
3. Whose: Used to show possession (belonging to someone).
Example: Sarah, whose brother is in my class, won the singing contest.
Quick Review: The "No-That" Zone
Important! In non-defining relative clauses, we never use the word "that." We only use "who" or "which."
Wrong: My car, that is blue, is fast.
Right: My car, which is blue, is fast.
4. Step-by-Step: How to Build Your Sentence
If you find it hard to write these sentences, try this 3-step process:
Step 1: Start with two separate facts.
Fact A: Pizza is my favorite food.
Fact B: Pizza comes from Italy.
Step 2: Choose your "Main Sentence" and your "Extra Info."
Main: Pizza is my favorite food.
Extra: It comes from Italy.
Step 3: Combine them using a relative pronoun and commas.
Result: Pizza, which comes from Italy, is my favorite food.
Key Takeaway:
Always check if your sentence makes sense without the part between the commas. If it does, you've done it correctly!
5. Common Mistakes to Avoid
Even the best students make these mistakes sometimes! Watch out for these:
1. Forgetting the second comma:
Students often forget to close the "comma sandwich."
Mistake: My dog, which is a pug is very small.
Fix: My dog, which is a pug, is very small.
2. Using "that":
Remember, "that" is for defining clauses (the ones without commas).
Mistake: This book, that I bought yesterday, is great.
Fix: This book, which I bought yesterday, is great.
3. Leaving out the pronoun:
In these clauses, you must keep the word "who" or "which." You cannot drop it.
Mistake: My sister, I love very much, is a nurse.
Fix: My sister, whom (or who) I love very much, is a nurse.
Did you know?
Using non-defining relative clauses makes your writing sound much more professional and academic. It shows you know how to connect ideas smoothly!
Quick Summary Checklist
Before you finish your homework, ask yourself these three questions:
1. Did I use commas to separate the extra info?
2. Did I use who, which, or whose (and avoided "that")?
3. If I delete the clause, is the sentence still a complete thought?
Great job! You're now ready to use non-defining relative clauses in your next English composition. Keep practicing, and it will become second nature!