EXPRESING OBLIGATION AND PROHIBITION

1. MUSTN’T
MUST NOT
We use mustn’t to express
prohibition
By May Pulido
EOI Cartagena

2. You mustn’t touch it You mustn’t smoke You mustn’t drink
this water
You mustn’t use mobile
phones
You mustn’t walk
beyond this point
You mustn’t take
pictures

3. You mustn’t go
fishing here
You mustn’t dive
here
You mustn’t walk
your dog in this area
You mustn’t turn left
You mustn’t drop
litter here
You mustn’t go in

4. •You mustn’t drive your
car in the park
•You mustn’t play ball
games
•You mustn’t pick flowers
•You mustn’t walk on the
grass
•You mustn’t feed the
ducks
•You mustn’t go fishing in
the lake
•You must keep dogs on
a lead

5. Mustn’t = prohibition
Don’t have to = it is not necessary
You mustn’t get up
( prohibition)
You don’t have to get up
( it is not necessary)

6. We mustn’t go swimming
You don’t have to go swimming
( if you don’t want to. It is
not necessary).

7. Free entrance to the
show. Welcome in.
You don’t have to
give a tip
You don’t have to
have experience
You don’t have to pay