Have you ever wondered when to use who, whose, or whom?
You are not alone! These relative pronouns can be confusing because they look very similar, but each one has a different function in a sentence.
This simple visual guide with clear explanations will help you understand the differences.
The diagram also shows the connection between subject pronouns, possessive adjectives, and object pronouns, so you can better understand patterns like he → his → him or they → their → them.
Use this material as extra practice after class, while studying at home, or anytime you need a quick grammar review. The explanations are written especially for ESL students, with simple language and practical examples to make learning easier and less stressful.
We all have moments when something goes wrong. For example, a cold meal at a restaurant, a noisy hotel room, a delayed delivery. In English, it’s important to complain politely, not angrily. Here you will find useful expressions, examples, and a short practice activity.
1. When do we make complaints?
Here are common situations:
At a restaurant (the food is cold / wrong order)
In a hotel (room is dirty / too noisy)
In a store (item is broken / size is wrong)
With services (internet doesn’t work / package arrives late)
Complaints are usually made to solve a problem, not to argue. So the language needs to be polite, clear, and calm.
Useful Phrases for Complaining
Function
Useful Phrases
Complaining
• I’m sorry, but there’s been a mistake with … • I’m afraid that there’s a problem with … • There seems to be a problem with … • Can I see your …, please? • I’d like to make a complaint.
Giving reasons for complaints
• The problem is … • The … doesn’t work. • The … is broken. • I’ve been waiting for …
Responding and offering solutions
• I’m very sorry about that. • Unfortunately, we can’t … • We’ll give you …
Asking for action
• I’d like to cancel the order / get a refund / speak to the manager, please. • I’d like you to (change it for a new one). • Please could you (bring the bill)?
Situation
Complaining
Giving Reason
Asking for Action
Cold food at a restaurant
I’m afraid that there’s a problem with my meal.
The food is cold.
Please could you heat it up?
Wrong order
I’m sorry, but there’s been a mistake with my order.
The problem is I ordered chicken, not fish.
I’d like you to change it for a new one.
Broken product (store)
There seems to be a problem with this.
The item is broken.
I’d like to get a refund, please.
Hotel room issues
I’d like to make a complaint.
The shower doesn’t work.
I’d like you to send someone to fix it.
Long waiting time
I’m afraid that there’s a problem with the service.
I’ve been waiting for 30 minutes.
Can I speak to the manager, please?
Incorrect bill
I’m sorry, but there’s been a mistake with the bill.
Learning the passive voice help us focus on the action and the result, rather than on who performs the action. In many real-world situations. For example, in news, formal writing, academic reports, and instructions, the doer of the action is unknown, unimportant, or obvious. That’s where the passive becomes essential.
This lesson reviews the form and use of the passive in all main verb tenses included at B1 level.
1. Why We Use the Passive Voice
We use the passive when:
The doer is unknown: My wallet was stolen.
The doer is not important: These phones are made in Korea.
The result is more important than the person: The meeting has been cancelled.
The sentence sounds more formal or objective: The survey will be analysed next week.
In everyday life, we sometimes arrive late, forget to do something, or make a small mistake. When this happens, we need to give a clear and polite excuse. Making excuses helps people understand what happened and why.
This lesson will help you learn useful English expressions to explain situations politely and naturally. 😊
What Does “Make an Excuse” Mean?
To make an excuse means to give a reason for something you didn’t do or for something that went wrong.
Sometimes excuses are real. Sometimes they are not. But in English, we often use excuses to explain situations politely.
Examples:
“I made an excuse for being late.”
“She always makes excuses for not finishing her homework.”
Making excuses is useful in daily life, at school, at work, and with friends.
Here’s a table of useful phrases to help you get started:
Useful Phrases Table
Making Excuses
Apologising
Accepting / Rejecting Excuses
Well, you see…
I’m really sorry… 😔
OK / Never mind. I understand. 😊
I meant to, but…
It was very stupid of me. 😣
These things happen. 🤷
I had to…
I won’t do it again, I promise! 🤞
That’s no excuse. ❌
You can combine these sentence starters with a reason.
For example if you are late you can make the following excuses:
Starter Phrase
Reason (Complete the sentence)
Well, you see…
…the traffic was terrible. 🚗💨
I meant to, but…
…I overslept. 😴
I had to…
…help my sister before leaving. 👧
I had to…
…go back home to get something. 🏠
Conversation 1 — Being Late
A: You’re late again! B: Well, you see… the bus was really slow today. A: You should leave earlier. B: I know. I meant to, but I couldn’t find my keys.
Conversation 2 — Forgetting Something
A: Did you bring the book I lent you? B: I meant to, but I left it on my desk at home. A: You always forget things! B: I know… I’ll bring it tomorrow.
Non-defining relative clauses help us add extra information about a person, place, or thing. This information is not essential to understand the sentence. The clause contains an additional, interesting detail.
👉 We always use commas with non-defining relative clauses. 👉 We NEVER use “that” in non-defining clauses.
What Is a Non-Defining Relative Clause?
A non-defining relative clause:
gives extra information
is separated with commas
uses relative pronouns like who, which, where, when, whose
can be removed and the sentence still makes sense
How to Form Non-Defining Relative Clauses
Non-defining relative clauses give extra information about a person, place, or thing. This information is not essential to understand the main idea. We always use commas to separate the extra information.
1. Structure
Main clause, relative pronoun + extra information, rest of the sentence.
2. Common Relative Pronouns (for Non-Defining Clauses)
Relative Pronoun
Used For
Example
who
people
My English teacher, who is from Canada, is very friendly.
which
things / animals
The book, which I finished yesterday, was fantastic.
where
places
Vancouver, where my cousins live, is beautiful.
when
times
2010, when I finished high school, was an important year for me.
whose
possession
Anna, whose car broke down, arrived late.
📝 Important:
Always add a comma before and after the clause (unless it ends the sentence).
Don’t use “that” in non-defining clauses.
3. Comma Rules
Put a comma before and after the non-defining relative clause (unless it’s at the end of the sentence; then you only need one comma).
4. Key Points for Low-Level Learners
You can remove the extra information and the sentence still makes sense.
The verb form inside the clause follows normal grammar rules.
Do not use these clauses to identify someone/something. (Those are defining clauses.)
Examples:
My brother, who lives in Mexico, is visiting next month. (extra info: he lives in Mexico)
The Eiffel Tower, which is in Paris, is very popular. (extra info: its location)
September, when the weather is mild, is my favorite month. (extra info: weather in September)
Chichén Itzá, where millions of tourists go each year, is amazing. (extra info: visitors)
🧠 Compare: Defining vs. Non-Defining
Type
Purpose
Example
Commas?
Use “that”?
Defining
Necessary information
The man who works here is kind. The man that works here is kind.
We often want to say why we do something, our goal or reason. There are several ways to express purpose in English. Let’s learn and compare them!
1. TO + Base Form
We use to + base verb to show purpose, the reason for an action.
Structure
Example
Meaning
verb + to + base verb
I study hard to pass the exam.
I study for this reason.
verb + to + base verb
She went to the gym to get stronger.
She went there with a goal.
🧠 Tip: Use this for short, direct purposes.
I’m calling to ask a question. He moved to Canada to find a job.
2. IN ORDER TO + Base Form
We use in order to when we want to sound more formal or emphasize the purpose. It means the same as to, but it’s a bit stronger.
Structure
Example
Meaning
verb + in order to + base verb
She left early in order to catch the train.
She left early so she could catch it.
verb + in order not to + base verb
He spoke quietly in order not to wake the baby.
He didn’t want to wake the baby.
🧠 Tip: Use in order to in writing or formal speech.
I’m taking this course in order to improve my skills.
3. SO (THAT) + Subject + Modal + Verb
We use so (that) to explain the purpose of an action, especially when there is a different subject. It’s often followed by can / could / will / would / may / might / should.
Structure
Example
Meaning
so (that) + subject + modal + verb
I’m studying so (that) I can pass my exam.
My goal is to pass.
so (that) + subject + modal + verb
She left early so that she could catch the bus.
She left early to catch it.
🧠 Tip: You can say so that or just so in informal English.
4. FOR + Gerund (-ing)
We use for + -ing to say the general use or purpose of something. It answers “What is this used for?”
Structure
Example
Meaning
for + verb-ing
This brush is for painting.
The brush is used to paint.
for + verb-ing
These shoes are for running.
They’re made for that.
🧠 Tip: Don’t say ❌ for to — just for + -ing.
I use this blog for learning English.
5. FOR + Noun
We also use for + noun to show purpose, especially with things.
Structure
Example
Meaning
for + noun
This medicine is for headaches.
You take it when you have a headache.
for + noun
The bag is for my laptop.
The bag’s purpose is to carry it.
🧠 Tip: Use for + noun when you’re not using a verb.
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