In this lesson, students learn how to explain mysterious events or situations using clear and structured English. Learners practice using past events, possible causes, and logical conclusions to describe what happened and why. The topic uses modal verbs, past and present tenses, and future predictions to help students build their speaking and writing skills.
Examples:
The man disappeared, but he left his phone on the table.
It could be that the wind opened the door.
Maybe someone is playing a trick.
They will investigate the sounds tomorrow.
🧠GRAMMAR
Past Simple
We heard a loud noise last night.
She saw a strange figure in the garden.
Present Simple / Continuous
People often see shadows near the forest.
The police are checking the area now.
Future (Will / Going to)
They will explain the results next week.
We’re going to follow the tracks tomorrow.
Modal Verbs (Can / Can’t / Must / Might / Should)
It might be an animal.
It can’t be a person — there were no footprints!
They must check the cameras.
You should tell the police.
Comparatives & Superlatives
This case is more difficult than the last one.
It’s the most interesting mystery in years!
Prepositions and Adverbs of Frequency
The sound came from behind the door.
Strange things usually happen after midnight.
📚 VOCABULARY (10 Words with Definition)
| Word | Definition |
|---|---|
| Clue | A piece of information that helps solve a mystery |
| Disappear | To go away or stop being seen |
| Strange | Unusual or surprising |
| Investigation | The process of finding out what happened |
| Suspect | A person who may be involved in something |
| Noise | A sound, usually strange or loud |
| Shadow | A dark shape made when something blocks light |
| Tracks | Marks or footprints left by someone or something |
| Truth | The real facts about a situation |
| Evidence | Information or objects that show what happened |
💬 USEFUL EXPRESSIONS
What could it be?
There’s something strange here.
Let’s look for clues.
That doesn’t make sense.
We need more information.
Maybe it’s just the wind.
It’s hard to explain.
✏️ SENTENCES
Positive:
They found some strange tracks in the garden.
I think there’s a simple explanation.
Negative:
She didn’t hear anyone enter the house.
It can’t be an animal — it was too big!
Questions:
What happened last night?
Do you think someone broke in?
Will they find the truth?
Answers:
I’m not sure — it’s a mystery.
Yes, they’re going to check the security footage.
No, I think it was just a trick.
🗣️ LONG CONVERSATION
Lucy: Did you hear what happened at the museum?
David: No, what?
Lucy: The security alarm went off, but no one was inside.
David: That’s strange. Did anything disappear?
Lucy: No, but a statue was moved.
David: Weird! Could it be a prank?
Lucy: Maybe. The guards are going to check the video cameras.
David: It might be the wind, but statues don’t move by themselves!
Lucy: I know. That’s why it’s a mystery.
David: I hope they find the explanation soon.
📖 LONG READING
Title: The Case of the Locked Room
Last Sunday, something strange happened in an old hotel. At 2 a.m., guests heard loud footsteps in Room 205. But that room was locked and empty. The manager opened it with a key, but there was no one inside. The windows were also closed from the inside.
The next morning, a cleaning lady found muddy footprints on the floor. She also saw a small piece of paper near the door with a strange symbol on it.
A team of investigators is going to examine the room this week. Some people believe it’s just a joke. Others say the hotel is haunted. No one knows for sure.
Questions and Answers:
What did guests hear?
→ Loud footsteps in Room 205.What was strange about the room?
→ It was locked and empty.What did the cleaning lady find?
→ Muddy footprints and a strange paper.What will investigators do?
→ They will examine the room.Do people believe different things?
→ Yes, some think it’s a joke, others think it’s a ghost.
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