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Start with your own life
The easiest way to answer is to talk about what you do. Do you sort your rubbish? Do you walk, cycle or take the bus? Do you carry a reusable bag? Personal examples are easy to remember, and they sound natural. You do not need to be perfect. It is fine to say you try, but sometimes forget. Honest answers often sound more fluent than answers you learned by heart.
In my daily life, I try to recycle as much as I can.
I usually take the bus because it is better for the environment.
To be honest, I don't always remember, but I'm getting better.
Give a reason and an example
A short answer like "Yes, I recycle" is too small. Try a simple pattern: say your idea, give a reason, then add an example. For example: "I think plastic is a big problem. It stays in nature for a long time. In my neighbourhood, I often see bottles in the park." This pattern works for almost any question. It helps you speak for longer without stress.
I think this is important because it affects everyone.
For example, in my area, people often leave rubbish near the bins.
That's why I believe small changes can help.
Talk about the past and the future
Some questions ask how things have changed, or what might happen next. You can compare your home country with where you live now. Maybe recycling was different there. Maybe people used more cars, or fewer. For the future, use simple words like "might", "will" and "I hope". You do not need facts or numbers. Your opinion and your experience are enough.
When I was a child, people didn't talk about recycling very much.
In my home country, most people travel by motorbike.
In the future, I hope cities will have more green spaces.
Suggest solutions and share opinions
Examiners often ask, "What can people do?" or "Who should be responsible?" Try to give ideas at different levels: individuals, families, schools, companies and governments. You can agree with one side, or say both sides have a point. Using phrases like "on the other hand" shows you can think about different views. Keep your ideas simple and clear.
One simple solution would be to use less plastic at home.
On the other hand, it can be expensive for some families.
I think both people and the government have a role to play.
What to do when you don't know the word
Environment topics have many difficult words. If you forget a word, don't stop. Explain it in another way. If you forget "pollution", you can say "dirty air from cars and factories". If you need time to think, use a short phrase. Examiners usually listen to how you communicate, not only to special vocabulary. Staying calm and keeping going is a real skill.
I'm not sure of the exact word, but I mean the dirty air in cities.
That's an interesting question. Let me think for a moment.
Could you repeat the question, please?
Common questions
Do I need to know facts about climate change?
No. Usually you are not asked to give facts. You are asked to share ideas, opinions and experiences. Talking about your own habits and what you see around you is a good way to answer.
What if I don't care much about the environment?
That's okay. You can still give a calm, honest answer. For example, say it is not your main interest, but you understand why people care. Then give one or two simple ideas.
How can I make my answers longer?
Use the pattern: idea, reason, example. You can also compare your home country and where you live now, or talk about the past and the future. These steps help you keep speaking naturally.