كُلْ جيّدًا، عِشْ جيّدًا · Programme: Telling others what to do · Grammar: must / mustn’t
By the end of this lesson, I can:
- I can name the parts of a healthy meal.
- I can tell someone what to do with must and what not to do with mustn’t.
- I can understand a short talk at the dentist’s.
- I can say the two th sounds: three and this.
🖼️ Picture dictionary قاموس مصوّر
tap 🔊 to listen📚 كلمات الدرس
12 كلمة من هذا الدرس في القاموس المدرسي: المعنى بالعربية والفرنسية، والنطق، ومثال.
📖 Read: A visit to the dentist أقرأ
Adam is eleven. He lives in Bizerte. One afternoon, he has a pain in his tooth, so he goes to the dentist with his dad.
At home, Adam writes three rules on his bedroom door: I must brush my teeth. I mustn’t eat sweets every day. I must play sport to keep fit. Now his smile is beautiful!
Do you understand? أفهم
Answer in your copybook first, then check.
- Where does Adam live?
Answer
He lives in Bizerte.
- Why does Adam go to the dentist?
Answer
Because he has a pain in his tooth.
- What is bad for teeth?
Answer
Sugar (sweets) is bad for teeth.
- How many times a day must Adam brush his teeth?
Answer
Two times a day: in the morning and at night.
- Which food is good for teeth?
Answer
Milk and cheese.
🧩 Grammar القواعد
We use must to say something is very important, it is a rule: You must brush your teeth.
We use mustn’t (= must not) to say: don’t do it, it is not allowed or it is dangerous: You mustn’t eat sweets every day.
must / mustn’t + verb (no to, no -s): She must drink water.
should = good advice; must = a strong rule.
must تعني يجب (قاعدة مهمّة)، و mustn’t تعني يُمنع أو لا يجب. بعدهما الفعل في صيغته الأصلية دون to ودون s.
Must or mustn’t?
| ✅ You must… | ❌ You mustn’t… |
|---|---|
| brush your teeth twice a day 🪥 | eat sweets before bed 🍭 |
| eat breakfast 🥚🍞 | go to school with no breakfast 🚫 |
| drink water 💧 | drink lots of fizzy drinks 🥤 |
| wash fruit before you eat it 🍎 | eat with dirty hands 🖐️ |
A healthy plate
🥦 🥕 Half of the plate: vegetables and fruit.
🍞 🍝 A quarter: bread, pasta or rice.
🐟 🥚 🍗 A quarter: fish, eggs, chicken or beans.
🥛 💧 And a drink: milk or water.
You should eat an orange. (good idea) · You must brush your teeth. (rule!)
Good for / bad for
| Food or habit | It is… |
|---|---|
| milk and cheese 🥛🧀 | good for your teeth and bones |
| sweets and fizzy drinks 🍬🥤 | bad for your teeth |
| carrots 🥕 | good for your eyes |
| sport ⚽ | good for your heart |
💬 Useful expressions عبارات مفيدة
Telling others what to do
Saying good for / bad for
🔊 Pronunciation النطق
Worked examples أمثلة محلولة
Try first, then read the solution.
Sweets at night: are they OK?
Step-by-step solution
- Sweets at night are bad for your teeth ➡️ mustn’t.
- Add the base verb: eat.
✓ You mustn’t eat sweets at night.
He must to brush his teeth.
Step-by-step solution
- No to after must.
✓ He must brush his teeth.
Complete: Cheese is … your teeth.
Step-by-step solution
- Cheese has calcium: it helps teeth.
- So it is good for.
✓ Cheese is good for your teeth.
⚠️ Common mistakes أخطاء شائعة
⭐ Remember أحفظ
- A healthy meal has vegetables, fruit, bread, fish or eggs, and milk or water.
- must + verb = a strong rule: You must brush your teeth.
- mustn’t + verb = don’t do it: You mustn’t eat sweets every day.
- Sugar is bad for teeth; milk and cheese are good for teeth.
- one tooth, two teeth.
- th has two sounds: three /θ/ and this /ð/.
Quick quiz اختبار سريع
4 questions · instant feedback1. You … brush your teeth every day.
2. Sugar is … your teeth.
3. Which word has the /ð/ sound?
4. In the text, what does Adam write on his door?
✍️ Write: Rules for a healthy life أكتب
Write a poster with rules for a healthy life for your class. Use must and mustn’t.
Steps
- Write a title: Rules for a healthy life.
- Write two rules with must about food.
- Write one rule with must about teeth or sport.
- Write two rules with mustn’t.
- Finish with a happy sentence.
A model text to compare with (after writing mine)
Rules for a healthy life
We must eat breakfast every morning, for example an egg, bread and milk. We must eat vegetables and fruit every day. We must brush our teeth two times a day. We mustn’t eat sweets before bed, because sugar is bad for our teeth. We mustn’t drink lots of fizzy drinks. Let’s eat well and live well!
One good example among many: compare, don’t copy.
😊 The lighter side استراحة
Eat well, live well.
I have lots of teeth but I never eat. What am I?
Answer
A comb.
Why did the egg go to school? — To get egg-ucated!
✅ Exercises تمارين
All exercises →6 exercises on three levels, with new questions every time.
- Choose the right answerTo do
- ClassifyTo do
- Situation 1To do
- Situation 2To do
Practise: Eat Well, Live Well
True or false, complete, choose, classify and situations: instant correction with explanations.
Got the lesson? Try it yourself
6 exercises · instant correction · new questions every time
Start the exercisesPictures: Twemoji (CC-BY 4.0). Texts, explanations and exercises: Scolaire.tn.