Page 53 - WorldWatchers_RS_2_SB_SE

3 Grammar
B. Read again and write T for True or F
for False.
must – have to
1. Nobody knows how the ire started.

2. The kids planted lots of seeds • We must / have to do something to protect
near the river. the environment. (It is necessary.)
3. There are many burnt trees in • We don’t have to go to the supermarket.
We’ve got food for dinner. (It isn’t necessary.)
the middle of the forest.
• You mustn’t/can’t take pictures in the
4. Harry dropped seeds when the museum. (It isn’t allowed.)
drone was far from the ground.
note
5. It started raining, so the kids We use must and have to for the present and
stopped planting seeds. future. For the past, we use had to.

Choose the correct option.
1. We have / must stop at red tra ic lights.
© MM Publications
2 Vocabulary 2. You mustn’t / don’t have to use your mobile
in the classroom. It’s not allowed.
Complete with the words in the box.
Then listen and check your answers. 3. You don’t have to / can’t wash the car. Jack
Do you do any of these things? and I can do it.
4. Dad, we don’t have to / can’t park here!
devices shower car Look at the sign!
recycle forests bottles
5. Children have / must to go to school every day.
6. I didn’t go to the cinema with Alice yesterday.
REDUCE POLLUTION I had to / must do a science project.

7. The museum isn’t far, so we can walk there.
• Walk, ride your bike or use public We don’t have to / mustn’t take the car.
transport. Tell your parents not
to use their 1 4 Speak & Write
when it isn’t necessary.
A. Talk in pairs. Look at the signs at Redwood
Park and talk about what you must, have to,
• Plant trees in gardens, parks or mustn’t and don’t have to do there.
2 !
Don’t cut down trees. BUY
TICKETS
• Save energy. Turn o f lights and HERE
3 when you
aren’t using them. Tell your parents
to use LED light bulbs.

• Don’t forget the three Rs:
Reduce – Reuse – 4 .
• buy ticket • pay for parking
Say no to plastic straws, cups, • throw rubbish on the ground
5 , • throw rubbish in the bins
• light a camp ire • have barbecues
supermarket bags, etc. • cut down trees

• Have a hot 6 B. Write a few sentences about what you must,
instead of a hot bath. That way you have to, mustn’t and don’t have to do at
Redwood Park.
save water too!
At Redwood Park, you...

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WW 2_SB_Book.indb 51
WW 2_SB_Book.indb 51 13/7/2022 11:44:38 πµ