5. INVIL A2
Lucy: I want to backpack around Asia this summer. What do you
think, mom?
Mom: That sounds dangerous. You shouldn´t go alone. You ought
to go with someone. You’d better talk to your father. You also
need to take some money.
Lucy: I have already talked to him. He gave me some traveler´s
checks.
Mom: Do you have everything ready? You must have a valid
passport and get a visa for some countries. You also have to carry
your identification with you.
Lucy: You are right, mom. I also need to buy a map.
6. INVIL A2
You ought to go with someone1
You must have your passport2
You shouldn´t go alone3
You’d better talk to your father.4
You also have to carry your
identification with you.5
You also need to buy a map.6
Giving suggestionsA
Describing necessityC
Expressing rules, obligation
or a strong opinionB
You ought to go with someone1
You must have your passport2
You shouldn´t go alone3
You’d better talk to your father.4
You also have to carry your
identification with you.5
You also need to buy a map.6
7. INVIL A2
Modals to Express rules,
obligation or a strong opinion
Semi-modals to Express
obligation and necessity
Modals to Express Advice
Semi-modals to express
Advice
MUST HAVE TO
HAD BETTER
SHOULD
OUGHT TO
NEED TO
MUST
HAVE TO
SHOULD
NEED TO
OUGHT TO
HAD BETTER
8. INVIL 90021 INGLÉS 2
EXPRESSING LACK OF NECESSITY
You don`t have to get up early today.
You don`t need to buy it.
EXPRESSING PROHIBITION
You shouldn’t speak to your teacher like that.
You mustn’t start a fight.
You ought not to speak to your teacher like that.
EXPRESSING PROBABILITY
It must have been love.
9. INVIL 90021 INGLÉS 2
Statements
You must make sure your ticket under the exact name that
appears on your ID.
You should Review the guidelines for liquids and gels on your
carry-on baggage page before your flight.
You had better buy your ticket in advance to save money.
Subject + MUST + base form + complement
Subject + SHOULD + base form + complement
Subject + HAD BETTER + base form + complement
10. INVIL 90021 INGLÉS 2
Statements
You ought to make sure your ticket under the exact name
that appears on your ID.
You have to review the guidelines for liquids and gels on your
carry-on baggage page before your flight.
You always need to carry your personal documents with you.
Subject + OUGHT + Infinitive form + complement
Subject + HAVE + Infinitive form + complement
Subject + Need + Infinitive form + complement
11. INVIL A2
I need to speak to her.
That must be Jerry. They said
he was tall with bright red
hair. .
We ought to follow a diet.
You’d better leave your bag
here.
I do not need to speak to
her.
That must not be Jerry. He is
supposed to have red hair.
We ought not to follow a
diet.
You had better not leave
your bag here.
1
2
3
4
12. INVIL A2
Things you can not do with modals and semi modals
You must to check airline regulations all the time. (wrong)
You must checking airline regulations all the time. (wrong)
You must check airline regulations all the time. (right) √
You should to roll your clothes when packing. (wrong)
You should rolled your clothes when packing. (wrong)
You should roll your clothes when packing. (right) √
You do not ought to carry too much cash. (wrong)
You not ought carry you much cash. (wrong)
You ought not to carry much cash. (right) √
You do not had better carry too much cash. (wrong)
You had better not to carry you much cash. (wrong)
You had better not carry much cash. (right) √
13. INVIL 90021 INGLÉS 2
Questions and answers with Modals
Must students wear sailor uniforms in Junior high schools in
Japan?
Yes, they must.
Yes, they must wear sailor uniforms.
No, they mustn't. Most schools have changed to
Western styles.
Should university students set goals?
Yes, they should.
Yes, they should set long and short term goals.
No, they shouldn´t.
14. INVIL 90021 INGLÉS 2
Questions and answers with Semi-modals
Do we need to arrive early for domestic flight?
Yes, you do.
Yes, you do. If you are not checking bags arrive at least 60
minutes before. Otherwise, you need to arrive 90 minutes
before.
No, you don`t.
Do Japanese students have to learn Kanji in elementary
school?
Yes, they do.
Yes, they have to use 2,136 Kanji daily.
No, they don´t.
15. INVIL A2
Should expresses a
recommendation that you may
or may not follow.
Had better warns you to do or
not to do something in order to
avoid a bad Consequence. Had
better has a higher degree of
urgency.
16. INVIL A2
Problem 1: My sister hasn’t taken a vacation in five years. She is exhausted!
Solution: She_____take a break and go somewhere exotic for a couple of
weeks.
Problem 2: Thomas' luggage has a torn zipper.
Solution: Thomas____ buy new luggage.
o Should
o Ought to
o Had better
o Should
o Ought to
o Had better
17. INVIL A2
o Should
o Ought to
o Had better
o Should
o Ought to
o Had better
Problem 3: Our car is very dirty.
Solution: We____ wash our car.
Problem 4: A police officer is behind me flashing his lights.
Solution: You ________pull over quickly.
18. INVIL 90021 INGLÉS 2
o Should
o Ought to
o Had better
o Should
o Ought to
o Had better
Problem 5: A little boy ran out into the street without looking both ways.
Solution: That little boy _______ learn not to run into the street like that!
Problem 6: I’m leaving for New York tomorrow but the airport was closed
due to bad weather. I don’t know what to do...
Solution: Maybe you ______ reschedule and get a flight for another day.
19. INVIL A2
I will travel by British Airline
and I need to take electrical
devices.
People say people suffer
from Yellow Fever there.
The airline only allows 20 kgs
for economy class.
I want to travel with flip-
flops. They are more
comfortable.
You had better get a
vaccination.
You must turn them off
while you are flying.
Otherwise you will be
banned.
You ought no to wear
sandals. it’s best to have a
good set of sturdy shoes to
protect your feet from sharp
objects.
You should not take a lot of
luggage.
1
2
3
4
A
B
C
D