The Mysterious Package - Learn Modal Verbs Through Story
Updated: Sep 1
Why Learn Grammar Through Interesting Stories
Learning grammar through stories makes the rules come alive! When you see grammar in context, it’s easier to understand and remember how to use it correctly.
Stories provide relatable examples, helping you grasp complex concepts while enjoying the narrative. This makes grammar feel less daunting and more fun!
Let's learn Modal Verbs must, should, could & might Through a Mystery Story!
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Let's begin.
📚The Mysterious Package - Modal Verbs In Action (Part 1)
Lina had just finished her morning coffee when she heard a knock at the door.
Surprised, she opened it to find a small, brown package sitting on her doorstep.
There was no address, no return label—nothing to indicate where it had come from. She picked it up and examined it.
It wasn’t heavy, but it rattled slightly when she shook it.
“Who could have sent this?” she wondered. “I must figure out who it’s from,” Lina said aloud. But before doing anything else, she considered her options.
“Maybe I should open it,” she thought. “But what if it’s dangerous?
I should call the police, just in case.” The more she thought about it, the more uncertain she became.
It could be a mistake—someone might have sent it to the wrong house. But then again, it might be a surprise from a friend.
Her phone buzzed, pulling her out of her thoughts. It was her friend, Sophie.
“Hey, Sophie,” Lina said, pacing the room.
“You won’t believe what just happened. I received a package, but it doesn’t have any information on it. What do you think I should do?”
“Hmm,” Sophie replied. “That’s strange. You could try opening it, but you should be careful. Maybe it’s something harmless, like a gift. Or it might be something important. Just make sure you're safe.
Lina nodded. Sophie was right. She must be cautious. But her curiosity was growing. She decided to ask her neighbours if they had seen anyone leave the package.
After a few knocks on the doors, no one had any information.
Lina returned home, feeling even more puzzled. She stared at the package, still unsure. “I could leave it here and wait,” she thought, “but I must know what’s inside.”
Finally, after much deliberation, Lina grabbed a pair of scissors and carefully sliced through the tape.
Inside the box was... an old map. On it, there were strange markings and a note that read, "The journey begins where the sun meets the sea."
Lina’s heart raced. What did it mean? Where could it lead? She didn’t have all the answers, but one thing was clear: she must follow the map’s clues and find out...
🎥 Watch video with 🗣️voice narration for listening & pronunciation practice:
👇The Mysterious Package - Modal Verbs in Action
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🎬 Let's Review!
How to use (must, should, could, might) in everyday conversation:
(a) MUST is used for strong obligations or certainty:
👉 Use it when you're sure something is necessary or true.
Example: “I must finish this report by tomorrow.”
(b) SHOULD is for advice or recommendations:
👉 Use it when you want to give a suggestion or express what's best to do.
Example: “You should visit that museum, it’s amazing.”
(c) COULD expresses possibilities or options.
👉 Use it when there are multiple possibilities.
Example: “We could go to the park or watch a movie at home.”
(d) MIGHT shows a lower level of certainty or possibility.
👉 Use it when you're unsure about something.
Example: “She might be at the meeting later, but I'm not sure.”
📖 Let's Practise!
📌 Exercise 1: Fill in the Blanks
Complete the sentences with the correct modal verb:
(must, should, could, might)
(1) Lina ________ open the package, but she wasn’t sure if it was safe.
(2) She thought the package ________ have been sent by mistake.
(3) Sophie said Lina ________ be careful when opening it.
(4) Lina knew she ________ solve the mystery of the map.
📌 Exercise 2: Rewrite the Sentences
Rewrite these sentences using the correct modal verbs.
(1) It’s a good idea to check with your neighbours.
You _____________ check with your neighbours.
(2) There’s a chance the package was sent to the wrong address.
The package _____________ have been sent to the wrong address.
(3) Lina felt she had a strong obligation to find out what was in the package.
Lina felt she _____________ find out what was in the package.
📌Exercise 3: Match the Modal Verbs with Their Use
Match each sentence with the correct use of the modal verb:
(obligation, advice, possibility, or suggestion).
(1) "I should ask my neighbours about the package."
Answer: ..................................
(2) "I must open this package right away!"
Answer: ..................................
(3) "It might be a surprise from someone."
Answer: ..................................
(4) "You could leave the package unopened until you know more."
Answer: ..................................
🎬 Let's Recap!
How to use Modal Verbs MUST, SHOULD, COULD and MIGHT
Giving advice:
e.g. “My friend is sick. What should I do?”
Discussing obligations:
e.g. “I must remember to submit my homework.”
Exploring possibilities:
e.g. “We could meet at 5 or 6 pm.”
Talking about uncertainty:
e.g. “I might go to the party, but I’m not sure yet.”
Try the Quiz
💬 Discussion & Conversation Questions
Ready to become a detective? Use the questions below to discuss the mystery, share your ideas, and practise using must, could, should, and might naturally.
🔎 Talk About the Mystery
What do you think was inside the mysterious package? Why?
Who do you think sent the package?
What clues in the story helped you make your guess?
What could the package have contained?
What might have happened if the package had never arrived?
Who might have a reason for sending the package?
What do you think must have happened before the package arrived?
Do you think the characters should open a mysterious package? Why or why not?
🕵️ Imagine You Are the Detective
You receive a package with no return address. What could be inside?
What should you do before opening it?
What might make you suspicious about a package?
What clues must you look for?
If you found a mysterious letter inside, what could it say?
Who might you contact for help?
What information should you check first?
💭 What Would You Do?
Have you ever received a package you weren't expecting? What happened?
Would you open a package if you didn't recognise the sender? Why or why not?
What would you do if a mysterious package appeared outside your home?
Would you rather receive a mysterious package or a mysterious letter? Why?
If you could send someone a mysterious package, what would you put inside?
🗣️ Challenge: Use the 4 Modal Verbs
Choose one question above and give a longer answer. Try to use at least 3 of these modal verbs:
must · could · should · might
For example:
The package might contain an old photograph. It could be from someone the woman knew years ago. She should check the address carefully because the sender must have had a reason for sending it.
⭐ Discussion Challenge
Imagine the package has 3 possible explanations.
Create three theories:
Theory 1: It must be...
Theory 2: It could be...
Theory 3: It might be...
Then discuss with a partner:
Which theory do you think is most likely? Why?
✏️ Let us know in the comments below! ⬇️
Frequently Asked Questions - Must, Could, Should & Might
1. What are Modal Verbs in English?
Modal verbs are helping verbs that show ideas such as possibility, certainty, advice, ability, permission, or necessity. In this story, we focus on must, could, should, and might.
For example:
must → strong certainty or necessity
could → possibility
should → advice or expectation
might → possibility
2. What does “must” mean?
Must can express something that is necessary or something the speaker believes is very likely to be true.
Necessity:
You must open the package carefully.
Strong deduction:
The package must be important.
Here, must be important means the speaker is quite sure about it.
3. What does “could” mean?
Could can express possibility, especially when we are not sure about something.
The package could contain a gift.
It could be from Emma.
In these examples, the speaker thinks something is possible but does not know for certain.
What does "should" mean?
Should is commonly used to give advice or talk about something that is expected to happen.
Advice:
You should check the label first.
Expectation:
The package should arrive tomorrow.
5. What does “might” mean?
Might expresses possibility when something is uncertain.
The package might be from an old friend.
There might be a clue inside.
Might often suggests a lower level of certainty than must.
6. What is the difference between “could” and “might”?
Both could and might can express possibility.
The package could be from Sarah.
The package might be from Sarah.
Both sentences mean that Sarah is a possible sender. In many everyday situations, they can be used interchangeably.
7. What is the difference between “must” and “might”?
Must expresses a strong belief or deduction, while might expresses possibility.
Compare:
The package must be from Sarah.= I am almost certain.
The package might be from Sarah.= It is possible, but I am not sure.
This difference is especially useful when talking about clues and solving mysteries!
8. What is the difference between “should” and “must”?
Both can express necessity, but must is generally stronger.
You should call the sender.= This is good advice.
You must call the sender.= This is necessary or required.
Should is often used for recommendations, while must expresses a stronger obligation.
9. What is the basic sentence structure for these modal verbs?
Use:
Subject + modal verb + base verb
Examples:
She must open the package.
He could know the answer.
You should check the address.
They might find a clue.
Remember: after a modal verb, use the base form of the verb.
✅ She might know the answer.
❌ She might knows the answer.
10. Can we use “to” after must, could, should or might?
Normally, no. Modal verbs are followed directly by the base form of the verb.
✅ You must open it.
✅ She could be right.
✅ We should investigate.
✅ It might contain a clue.
Not:
❌ You must to open it.
❌ She could to be right.
11. How can I remember these 4 modal verbs?
Think about the mystery in this way:
🔎 MUST = I'm almost certain.
💡 COULD = It's possible.
💭 MIGHT = Maybe.
📌 SHOULD = It's a good idea / I expect it.
For example:
The package must be important. It could be a present. It might contain a letter. We should open it carefully.
12. Why are modal verbs useful for English learners?
Modal verbs are extremely common in everyday English. They help you express your ideas more naturally and show how certain, necessary, or advisable something is.
They are particularly useful when:
making suggestions
giving advice
talking about possibilities
making predictions
expressing rules or obligations
making deductions from clues
13. Can I learn modal verbs through stories?
Yes! Stories give you a meaningful context for seeing how modal verbs are used in real situations. Instead of memorising grammar rules on their own, you can notice how characters use must, could, should, and might to make guesses, give advice and solve problems.
Enjoyed learning Modals through stories?
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