Necessity Expressing a need I need to I have to I have got to no negative is used with this form I must not Expressing a need I need to I have to I have got to I must ID: 585484
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Slide1
Modals
NecessitySlide2
Expressing a need
I need to….
I have to…
I have got to…( no negative is used with this form)
I must (not)…Slide3
Expressing a need
I need to….
I have to…
I have got to…
I must …
I need to study.
I have to work tomorrow.
I have got to finish my project tonight. => I’ve
gotta
finish….
I must do better. I must work harder. I must succeed!Slide4
Needs in the past and future
I needed to… Last week, I needed to study for the midterms so I had not free time.
I had to… Last month, I had to work a lot.
I will need… Next year, I will need to find a job.
I will have to…Next month, I will have to start studying for final exams.
I must… Next week, I must visit my friend in Japan.Slide5
Practice
Page 164 Exercise 13
Write down 4 past needs.
Write down 4 future needs. Slide6
Lack of necessity or prohibition
When used in the negative must and have to have different meanings!
don’t have to… = lack of necessity
must not = prohibition (DO NOT DO THIS!)
You don’t have to go. Vs. You must not go.
You don’t have to eat it. VS. You must not eat it.
You don’t have to study. VS. You must not study. Slide7
Practice
Page 165-166 Exercise 15 & 16Slide8
Obligation – be supposed to
Expresses an expectation of an event or behavior
The movie is supposed to start at 8pm.
You are supposed to pour another persons cup of soju.
You are supposed to hand in your assignments on time.
He is supposed to meet me here at 11:30 for lunch.
Class is supposed to finish at 12:20. Slide9
Obligation – be (past) supposed to
Expresses an unfulfilled expectation of an event or behavior
The movie was supposed to start at 8pm.
You were supposed to pour their cup of soju.
You were supposed to hand in your assignments on time.
He was supposed to meet me here at 11:30 for lunch.
Class was supposed to finish at 12:20. Slide10
Negative Obligation – be not supposed to
Expresses an event or behavior tha
t is not expected or proper in action right now.
You are not supposed to write someone’s name in red.
You are not supposed to pour your own cup of soju.
You are not supposed to eat in class.
The movie is not supposed to start.Slide11
Negative Obligation – be (past) not supposed to
Expresses an event or behavior tha
t was not expected or proper in the past.
You were not supposed to write their name in red.
You were not supposed to pour your own cup of soju.
You were not supposed to eat in class.
The movie was not supposed to start.Slide12
Practice
Page 173 Exercise 31
Write down answers to the questions. Try to use both the positive and
the negative.