Please enable JavaScript.
Coggle requires JavaScript to display documents.
Modals of Necessity, Express strong obligation or necessity, To express…
Modals of Necessity
What are the modals of necessity?
Used to express:
Obligations, requirements
, and
necessities.
The most
common modals
are:
1. Have to
2. Need to
3. Must
1
HAVE TO
Subject +
have/has to
+
base verb form
+ complement.
I
have to
finish
my homework before I go out
NOT HAVE TO
DO YOU HAVE TO?
Do/does + subject +
have /has to
+
base verb form
+ complement.
Do they
have to
fill out
this form?
Subject +
do/does not
have/has to
+
base verb form
+ complement.
He
doesn't have to
call
her if he doesn't want to.
2
NEED TO
NOT NEED TO
DO THEY NEED TO?
Do/does + subject +
need to
+
base verb form
+ complement.
Do we
need to
attend
to the meeting?
Subject +
do/does not
need to
+
base verb form
+ complement.
She
doesn't
need to
worry about the presentation.
Subject +
need to
+
base verb form
+ complement.
She
needs to
see
a doctor immediately.
3
MUST
MUST NOT
Subject +
must not / mustn't
+
base verb form
+ complement.
You
must not
smoke
inside the building.
Subject +
must
+
base verb form
+ complement.
You
must
wear
a seatbelt while driving.
Express strong obligation or necessity
Used to rules and regulations
To express necessity or obligation
Something not necessary to do
Ask if it is an obligation
To express necessity or requirement
Not necessary or obligatory
Ask if it is an obligation
Indicates prohibition