MODAL EXERCISES ANSWER KEY

ANSWER KEY

1. MObAL
VERBS
A
Nué
A
1-
1°
Bachillerato
Modal
verbs
oreo
specol
group
of
ouxiliory
verbs.
They
dori’t
express
focts,
we
use
them
before
other
verbs
to
express
otfitudes,
opnions
ond
judgements
of
events:
permission,
ab’Jity,
possibi/ity,
request,
obI,at,on
1)
Correct
the
following
sentences.
1.
She
conpioy
the
piono.
2.
YoudeWt
must
open
the
book.
fl)oslfl
3.
Conyou)Çsing?
/
4.
Lan
yeor
1
must
work
on
Saturdoys.
hcd
C
O
5.
My
sister
couldnt
her
homework.
(QL
¿cm
4
o1
o
6.
1
would
like
to
ploy
the
violín.
tr
nk,ie
(-O
They
ore
different
from
most
other
verbs
in
four
woys:
1.
They
ore
olwoys
followed
by
on
nf
initive
without
“to”;
2.
They
hove
no
—son
the
third
person
sinyulor;
3.
They
don’t
need
auxiliary
in
negotives
ond
questions:
4.
They
don’t
have
tenses,
infinitíves
or
participles:
Ir
ABILIW
CAN
Present
tMy
boyfnénd
can
p/ov
three
musical
instruments.
fl
COULb
Post
/
Conditionol
BE
ABLE
TO
Other
tenses
tIçj/d
ta/k
g’hen
1
was
twa.
*
One
doy,
people
ui/II
be
ab/e
fo
vis’
t
,Mars.
f
have
rever
been
ab/e
to
understand
gro
wn-ups.
*
rd
li/ce
fo
be
ab/e
fo
understand
mei,
/
women.
Re’ng
ab/e
to
swim
/5
necessary
if
you
uiant
togo
sai//ng.
2)
Complete
the
sentences
with
can(”t),
cau/d(n’t)
or
the
correct
fonn
of
(not)
be
ab/e
fa.
1.
It
wos
raining
hord,
sol
..CçkZitLf
go
out.
2.
Id
ove
to±X..LibtC
LS?
fly.
3.
1
pee
becouse
rm
not
weor’ng
my
glasses.
4.
The
police
...CQL(.Qí?
cotch
him,
so
he
escoped.
5.
Re
hG
footboll
since
he
broke
his
leg.
6.
Isow
the
occident
-1
might
..bEJ2L/c
help
the
pohce.
7.
It
you
dont
teN
me
whot
your
problem
¡s,I
a
help
you.
MODAL
VERH
AUXJLIARY
-
/
‘%,/
(
./
i
.
‘
4’
Imaygo
out
tontght.
*
John
shou/dstudy
harder.
Con
you
help
me.2
-
No,
Ican’t
*
Bemg
ob/e
fo
speok
Eng//sh
is
very
use
fu/nowadoys.
¡
ICQflsk
:4%,

2. 3)
FUI
¡n
the
gaps
with
can(tj
cou/d(’n’O
or
the
correct
form
of
(‘not,
be
ab/e
fo.
Deor
Mary,
I’m
very
pleosed
you
ç.
llwÇ,$?i:
coe
to
stay
ot
the
weekend.
rm
sorry
1
..Cø...idii...J
talk
te
you
on
the
phone
lost
night
but
1
leave
the
boby.
1
Li
..C.E’
:Ls2
get
tickets
ter
the
theatre
en
5aturday
-
1
..C
oit
to
go.
Mum
soys
thot
when
she
wos
young
you
have
a
night
mit
ter
$2!
Ycu
certoinly
CC’LO.P
....
new!
‘C
?C’
Wc
..hCkçrH
ÇCti..&ck
lOt
ix
the
cor
yet
but
Mum
says
we
borrow
hers.
By
the
way,
the
baby
.l,..Q&/C.kj.cgflsay
three
words
new!
See
you
on
Fridoy.
Love,
Jane
y
?kcc.sc
cnn
1.
uy
MAY
---
(formal)
*yf
speak
ta
yau.2
-
Certa’hly
you
may.
CQULb
---
(polite)
CauIdZ
borrow
yaur
car?
-
Of
caurse
ycu
can.
MI&HT
---
(more
formal)
*
Migflf
Tsee
yaur
d/ving
licence,
p/ease2
4)
FUI
iii
with
con,
may,
coda’,
con’t
Jim:
Mum
Ç1./(y)r
90
to
the
Iibrary?
Mother:
Of-coursç
you
....Cf’
Jim,
but
you
....ç.X’
¿
stay
very
long.
Jim:
.Viy.Jíe.’Ji
stoy
until
8.00?
Mother:
No,
you
....CQÜ
¿
becouse
dinner
storts
ot
8.30.
(At
the
Iibrary)
¡
J(ocaC
Jim:
1
look
at
the
Iatest
‘Time”
mogozine,
pleose?
Librarían:
Yes,
you
but
remember
that
you
.4<?.’
1
toke
it
mit
of
the
librory.
T1king...huLpermission
*
Students
can
use
fha
schaa/swfmmingpoa/.
*
Tf_d
wear
jeans
¿ti
primary
schoo/.
PERMISSION
Asking
for
/
Sivina
/
efusing
permissiQn
CAN
---
(informal)
*Can
Tuse
ycur
phane.
-
Of
caurse
yau
can.
1
CAN
Present
COULb
---
Post
BE
ALLOWEb
TQ
*
students
are
a//cuica’
te
use
the
schcal
swimming
peal.
Thc
reportar
was
al/cuica’
te
takc
a
phota
cf
the
singar.
*
When
1
turn
18,
Tilbe
a//cuica’
toga
en
ho/iday
with
my
friends.
*Ihave
nevar
been
al/cuica’
te
smcke
at
heme.

3. 5)
Complete
the
sentences
wíth
the
corrcct
form
of
(not)
be
a//owed
to.
1.
1
¿
stoy
out
lote
but
only
ot
the
weekends.
2.
That
sign
soys
No
smoking’.
Vou
.O,.dll../li?ç.ÇL,IP
srnoke
in
here,
3.
My
brother
.WOSa./..Q%%L.cC/
Ç
watch
the
filrn
last
night
because
it
was
on
tao
lote.
4.
In
Britoin
you..íiZc/&irc!
E’
drive
a
cor
while
holding
o
mobile
phone.
5.
When
we
were
younger,
we
...CLCZC.,,(IJIO
(ct..d...i9
go
to
bed
late
Qn
Fridoy
nights.
6.
(‘tau)
tJtyQ.(..CtUO.WZzd
cometo
the
disco
on
Soturdoy
night?
7.
(They)
%...1f%p...aiQ/Lttt..FC1
Weor
jeWellery
to
school?
-
No,
they
oren’t
6)
FilI
in
with
can(tj
could(n’tj
may
(not)
or
(not)
be
allowed
te.
Daniel:
.
(an/../Á.7s?
Ego
to
the
cinema
to,ight?
Mrs
Baynes:
‘tau
know
youc?.//4Z
ou+gj(n
the
week.
Doniel:
Rut
.%f7Zj
14Ç(’
5oturday
either.
1
think
Dod
is
too
strict.
Mrs
Boynes:
Don’t
speok
obout
your
fother
liRe
thot.
He
does
What
he
thinks
is
best.
Doniel:
E
hove
sorne
frier.ds
over,
then?
Mrs
Roynes:
Em
ofroid
ycu
...c1tL..L.........
We’re
hovir,g
sorne
frierds
for
dinrer.
Doniel:
lot
leost
wotch
TV
foro
while?
Mrs
Baynes:
Ves,
you
....&‘.J
but
only
after
you’ve
done
your
homeWork.
Daniel:
Rut
E
hoven’t
got
ory
homework!
/
Mrs
Boynes:
Ohl
Well,
in
thot
cose,
you
i.t..&s4iOhCçL.
gÇ)0,
but
‘tau
¿2?./
be
horne
late,
Daniel:
III
be
home
by
11
o’clock,
E
promise.
¿
ú//oo
A
7)
Complete
the
sentences
with
the
correct
verb.
PresentPostPresent
Perfect
Future
1.
TWO
of
rny
friends
..Ci/O
plt
he
soxo.
(obility)
2.
At
our
school
WC
C%4.u/
(permission)
3.
I&dJ.’2..rW’aTk
When
E
wos
one.
(ability)
f/
4.1
6xC.L..,i............
stoy
up
lote
untíl
E
wos
twelve
(perrnission).
5.
I’ve
01
Woys
k.
iZLQ/.k..I.Ç....
swim
fost.
(obility)
6.
Sh&s
never&n.4//C!YJp.Iye
her
hoir.(permission)
7.
rrn
taking
sküng
lessons,
next
yeor
1
..U.ktCISC..
I.S?ski.
(obility)
8.1
Won’t
Lt.LI/oi
Q
get
o
job
until
E
orn
seventeen.
(perrnission)
POSSIBILITY
/
bEbUCTION
MMMI&HT
It
is
very
possible
It
is
possible
COULb
---
5malI
possibihty
*
He
be
bock
befare
naon,
tHe
g/g,t
poss
the
exom
thts
tune,
*HecoU/dgetruch
oRe
doy
It
may
ciear
hp
for
the
pady,
MUST
It
is
almost
certain;
1
think.
*
They
/ook
al//ce.
They
must
be
tw’ns.
CANT
It
is
impossible;
E
don’t
think
*f
mus?
be
o
1/e.
It
can’t
be
true.

4. 8)
Choose
the
correct
aption.
1.
This
i’?Vrn,ht/con
be
Joon’s
fUe
-
it’s
got
her
name
ant.
2.
We
con
rn’gh
/rnust
gato
the
beoch
-
we
ore
not
sure.
3.
E
uLd/con/rnoy
buyo
motorcycle
fI
wonted
to.
4.
He
never
lies
so
he
can’t/rnustn’t,?
be
telling
the
truth.
5.
That
womon
(ç,q,y’_t/rnustn’t/cou/dnt
be
the
head
teocher
-
sh&s
too
young.
6.
1
rnustn’t/€ay/
can
phone
ycu
tonight
¡fI
hove
time.
AbVICE
SHOULb
*
Yac.’
shou/d
stop
smc/cm9.
/
IthnIycu
(
çbc.
mci”,
F.m
rcsçr,r’,
ccntL
QUGHT
TO
*
Yac.’
augh
t
te
treo?
onirnals
kind/y.
9)
Rewrite
these
sentences
using
the
modal
verbs
in
brackets.
1.
£
odvise
ycu
to
see
ycur
dentist.
(shauld)
2.
Em
sure
thot
New
York
¡son
excíting
city.
(must)
3,
It
is
possible
thot
III
orrive
home
late.
(moy)
4.
I’m
certoin
thot
studying
ond
working
at
the
some
time
isn’t
eosy.
(cont)
5.
Do
you
hove
the
obility
ta
write
with
your
left
hond?
(con)
O
BLIGATION
4L
MUST/
HAVE
TO
Present
HÁVE
TQ
other
tenses
*
We
must
follow
Me
school
rules
(Tan
obhged)
*
1
must
see
a
doctor
soca
(1
decide,
it
is
necessory)
tlhave
te
lose
sorne
weigflt.(Externaf
obligot/on.
The
doctor
soys
so)
*
bo
you
have
te
get
up
eorly
every
doy?
tAt
7,
Ihod_togo
te
bed
befare
tea
*A
t
30,
171
hove
te
look
of
ter
ny
fon/y
tSince
1
was
7,
1
hove
olwoys
liad
to
mo/ce
ny
bed,
PROHIBITION
*
Ha
y/ng
to
ge?
up
eor/y
is
onnoying.
MUSTNT
*
Yau
mustn’t
smc/ce
atschool:
Yoo
can’?
sino/ce
otschool:
You
moy
no?
sino/ce
otschoo/

5. NO
OBLIGATION
bONT/
bQESNT
HAVE
TQ
NEEbNT
*
Vea
den’t
huye
fo
take
an
timbre//a,
It
isnt
ruin/ng.
t/vly
little
gis
ter
deesn
boye
te
do
the
washing
ap.
*
Yeu
needn
Y
taRe
en
timbre/la.
It
isn
‘t
raüv½g.
*
%ly
little
sister
needn
‘t
de
the
washing
ap.
10)
FuI
in
the
gaps
with
must,
mustn’t
needn’t
or
can’t.
TRIS
ISA
SMOKE
FREE
SCHOOLSMOKING
PROHIBITED
In
this
SChOOI
students
íYiksíILL./CÇaf2..k.
smoke.
They
con
dress
os
they
Iike,
they
weor
school
uniforms
but
they
cót..L/t
t’’keor
dirty
clothes.
Students
ccZ/o.1w.?.JItove
school
until
3
pm.
They
.EUQS&ta.’Zi........
forget
to
do
their
homework.
They
..a-i.c.rfr
P
DrIng
o
doctor
s
note
if
they
ore
sick,
their
porents
con
write
une.
Students
be
lote
for
closs
or
tolk
loudly
in
lessons.
5tudents
..pJa..t.....
follow
these
rules,
but
teochers
LICcdr.....L.....
obey
them
becouse
they
have
o
seporote
set
of
rules
to
follow.
11)
Choose
the
correct
meoning
for
each
sentence
L
bogs
can
t
come
in
here.
(Sbogs
oren’t
ollowed
in
here.
b)
Its
better
if
dogs
don’t
comen
here.
2.
It
can
t
be
John.
Hesatschoel.
,9)Its
possible
thot
it’s
John.
Çb)±ts
impossible
thot
its
John.
3.
It
might
ram
later.
¿cok
cf
those
b/ack
clouds.
o)
It
definitely
wont
ruin
loter.
j’its
possible
it
will
roin
loter.
4.
Lara
oaght
te
change
her
computer.
Its
necessory
for
Loro
to
chonge
her
computer.
(bYits
o
good
idea
for
Loro
to
chonge
her
computer.
5
Ypumastn
‘t
taRe
a
mobile
phene
te
schooí
its
ogoinst
the
rules
to
toke
o
mobile
phone
to
school.
b)
You
shouldn’t
take
o
mobile
phone
to
school,
but
you
con
it
you
wont
tu.
6.
Vea
needn
t
harry.
Wc
aren
t
late.
o)
It
isn’t
o
good
ideo
to
hurry.
(5”Tt
isnt
necessory
to
hurry.
7
Vea
have
te
be
se
venteen
te
apply
for
a
driving
licence
in
Gritamn,(oats
necessory
to
be
seventeen
before
you
con
opply
foro
driving
licence.
b)
You
con
opply
for
a
driving
licence
before
you
ore
17
12)
Rephrase
the
following
sentences
so
that
they
mean
the
sorne
1,
You
cant
toke
photogrophs
in
the
Reino
Sofío
Museum.
(be
ollowed
to)
X’
‘1
a
2.
Perhops
we9l
go
to
o
footboll
motch
ot
the
weekend.
(moy)
¿tE
F)t19
90
¿
O
a
3.
It’s
o
good
idea
for
you
to
listen
more
corefully.
(ought
tu)
j
bE’
LI.Sk’,7.
4.
1
con
borrow
my
porents’
cor
whenever
1
like.
(be
ollowed
to)
2
112cfCo&td
Cc’
5.
It
is
o
bod
idea
to
wear
o
coot
in
this
weother.
(shouldn’t)
hcudfl
1
LuÑIÍ
6.
When
1
wos
three
1
couldnt
ride
o
bike.
(be
oble
to)
2
n1
ÓéÚ
it’
It’s
my
birthdoy
but
it
isnt
necessory
for
you
to
buyo
present
(neednt),9ót
jxtcb/
hy
8.
The
students
con
use
dictionories
in
the
English
exom.
(be
ollowed
to)
510&»iS
OIt
9.
rm
sure
they
are
exhausted.
(must)
?tcy
/71031
be
C.kkrU.JC
.
.
10.
My
grondfother
wos
obliged
tu
do
militory
service
when
he
was
18.
(boye
to)
A7cntY/4//rf
/Yc%
¿o
do,
-
7.
lo
lake..

6. PERFECT
MObALS
Wc
can
use
sorne
modal
verbs
in
the
perfect
forrn
to
talk
abcut
past
events.
MQbAL
+
HAVE
+
PAST
PAflCIPLE
MAY
/
MIGHT
HAVE
÷
Post
Porticiple
--
possibility
in
the
past
51w
hosn’t
come
yet.
She
may
/m’qht
have
taken
the
wrong
bus.
COULb
HAVE
+
Post
Porticiple
--
alternative
post
action
We
ecuid
have
inviteS
her
te
the
part,
but
we
oíl
forgo
t.
MUST
HAVE
÷
Post
Participle
--
Certainty
that
samething
was
true.
Linda
has
arr/ved/ate.
She
must
have
been
ir
a
trafficjam.
CANT
HAVE
+
Post
Porticiple
--
rmpossibility
in
the
post
tshe
can’t
have
passed
the
exam
-
she
didn’t
study
at
a/li
SHOULb
/
SHQULbN’T
HAVE
--
Criticism
after
on
event
lshouldnt
have
sta
ved
out
so
late
last
n,ght.
1
feel
terrible.
13)
Chaose
the
correct
alternative.
1.
‘1
got
95%
in
my
history
exam.’
-
‘Itmihthave/€an’th
been
very
difficult!’
2.
‘Everywhere
is
very
wet.
-
‘Iitmyphai)i/can’thave
rair,ed
in
the
niyht.
3.
1
saw
your
brother
in
town
this
morning.’
-
‘Ycu
m%ht
have
/nt
havé
seen
him
because
hes
away.’
4.
‘1
phoned
yau
Iast
night
but
there
was
no
reply.’
-
‘tmiTJ
have
/
can
‘t
have
been
in
the
bathroarn.’
5.
‘Have
ycu
firiished
your
hornewark?’
-
No,
1
miqht
hayo
Cshouldhavedone
it
but
1
haven’t
hod
time.
6.
‘Angela
was
olways
laaking
forward
to
seeing
Maria.
-
Hejnust
have?can
‘t
have
really
liked
her
then.’
14)
Complete
the
sentences
with
the
perfect
forms
of
the
modals.
1.
‘Where’s
Adela?-
She
.flJM3
ch
(must
/
leave)
because
her
cor
isn’t
outside.’
2.
‘Oliver
passed
his
rnaths
exarn,’
-
‘HeCt?,
FI
(can’t
/
do).
He
didn’t
do
ony
work!’
3.
‘Where’s
Elena?
5he’s
really
late.’
-
‘She
.
.,2Ç4JiL/?C1ft.n7/S..CC(
(might
/
miss)
the
bus.’
4.
‘Poor
Maria.
She
feels
sick.’
-
‘She
.,,CÇLJC
*?Ct
V
Jet
(could
/
eat)
something
bad.’
5.
‘My
brother
¡s
13
tamorraw.’
-
‘5°
he
?.uf..J&k
¿2E.c.,
.
)
(must
/
be)
born
in
1991.
ó.
‘Oh
no.
I’ve
gone
the
viran9
way.’
-
‘You
....L?C1
/.q&.r.(hould
1
take)
the
lost
turning.’
1.
He
wasn’t
able
to
write
until
he
was
eight.
He
..Ç.&J.d.o..i’
¿
t.
•
/
/6
2.
Talking
is
not
permitted
during
the
test.
Ycu
,tin.YajjO,Lc(/
£L’
¿Ci
/s’s
3.
It
isn’t
right
to
speak
to
ycur
mother
like
that.
Yau6/u2L./dF/
/
pCa
‘
4.
1
advise
you
to
drive
more
slawly.
You
..hQ.flCL.d[L.C
5.
It
isn’t
necessory
to
buyo
ticket.
Ycu
.J.?CCdOJ/dM2.í½e
t,
fc’
6.
It
is
passible
that
he
will
vm
the
race.
He
n
llie
(O
CC
7.
I’m
sure
that
is
John’s
car.
That
it&2L.6e
.42ht)..S..1
of
8.
It
5
abligatary
to
wear
a
uniform
in
this
schoal.
You
.c1Or..’
%cr
Jo
/úcerL
T’r.
—
9.
I’m
sure
Jim
didn’t
mentian
the
matter
to
anyane.
Jim
CaO
Y
hok.zc
fflefl//Úøct!
10.
Perhaps
he
has
gane
home.
He
imp
L..h.?.W
)a12’
/oo2e
.-r
6%
15)
Rewríte
the
following
sentences
beginning
with
the
words
given.
ÑEVER
EVER
EVERSIVS
UF!1