English_must, mustn’t and needn’t

English Lesson: must, mustn’t and needn’t

MUST

• It is necessary to do something. 

• Example: I must put the rubbish out. It smells awful.

• Example:

MUSTN’T

• It is forbidden to do something or it is the wrong thing to do. 

• Example: You mustn’t feed the animal at the zoo

• Example:

NEEDN’T

• It is not necessary to do it; you don’t need to do it.

• Example: You needn’t buy a new pencil. I will give you one.

• Example:

Complete the text with must, mustn’t or needn’t

How to be polite at a Vietnamese meal

You _____________ start your food until the host picks up his or her chopsticks. In general, if your host offers you food, you _______________ accept it. (It’s better to leave it in your bowl that refuse it). Periods of silence during a meal are not considered embarrassing in Vietnam, so you _____________ talk just to fill the gaps. As the proverb says: “Your speech should be better than silence. If not, be silent.

Open Ended

Homework: Think about the customs in your country when you visit somebody’s house. Write a complete sentence using must, mustn’t and needn’t.

1. Arrive exactly on time

______________________________________________________________________________.

2. Belch at the table

______________________________________________________________________________.

3. Bring flowers

______________________________________________________________________________.

4. Take your shoes of when you enter the house.

______________________________________________________________________________.

5. Eat everything that you are given

______________________________________________________________________________.

6. Eat with your fingers

______________________________________________________________________________.

7. Eat with a knife and fork

______________________________________________________________________________.