Modal auxiliaries

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• Secundair onderwijs

MODAL AUXILIARIES

OBLIGATION

Obligation (= moeten)

MUST:- obligation comes from the speaker

              - used for strong personal obligation

HAVE TO: - obligation comes from  somebody else
                    - It’s a law or a rule and the speaker can’t change it.
                    - daily routines and responsibilities

- should : moral obligation

   (= zou moeten)

Which modal is correct?
You ... stop.

1. have to
2. should
3. must
4. can

Your teacher: You ... hand in your homework tomorrow.

1. can
2. have to
3. must
4. should

You ... visit your aunt in hospital.

1. must
2. should
3. have to
4. can

Take Unit 4: Every end is ...

p. 18

ABSENCE OF OBLIGATION

LOGICAL DEDUCTION

POSSIBILITY

Unit 4: p. 19

All 8 situations from p. 19 will be discussed in a moment.

Choose the right modal auxiliary in the answer that appears.

First read the different situations at p. 19.

Situation 1:
You ... go to court tomorrow.
Which modal CAN'T be used?

1. don't have to
2. needn't
3. don't need to
4. shouldn't

Situation 2:
You ... talk about it at the trial.

1. don't have to
2. didn't have to
3. needn't have
4. needn't

Situation 3:
You ... go to the police station.
Which modal does NOT fit?

1. mustn't
2. don't need to
3. don't have to
4. needn't

Situation 4:
The police dropped the charges, so we...

1. didn't have to stand trial
2. couldn't have stood trial
3. shouldn't have stood trial
4. needn't have stood trial

Situation 5:
The burglars ... the school in those 15 minutes.

1. can't have broken into
2. must have broken into
3. shouldn't have broken into
4. needn't have broken into

Situation 6:
I was not chosen, so I ... be a juror in the case.

1. shouldn't
2. mustn't
3. can't
4. needn't

Situation 7:
So it ... the defendant who had stolen the examination papers.

1. needn't have been
2. should have been
3. must have been
4. can't have been

Situation 8:
The driver ... drunk or driven too fast.

1. needn't have
2. can't have been
3. may have been
4. must have been