Foscari - Dipartimento di Scienze Ambientali, Informatica e Statistica

4 It could / will rain, so we should take our umbrellas.
B Complete these sentences about your work environment using can (not) and may / might not.
1 I _________________ get a rise in salary this year.
2 I _________________ eat while working.
3 I _________________ arrive and leave at a certain time.
4 I _________________ wear whatever I want.
5 I _________________ play music while I work.
6 I _________________ take frequent coffee breaks.
7 I _________________ play the piano.
8 I _________________ look for a new job in the next few years.
2 Advice and obligation: have to, must, need, and should
When we tell someone that we think something would be good or useful for them we use should, and
must when we want to give them a very strong recommendation.
You should try using another search engine - it would be much quicker. You must go and see
that mouse - you would love it.
We use should when ethics are involved.
I think the Third World debt should be cancelled.
Companies should give more of their profits to charity.
When talking about our general work responsibilities (to show that an obligation probably comes from
some one else) we use have to. When we want to say that something is not necessary or is not our
responsibility we use don't have to or don't need to.
We have to arrive before nine in the morning but we don't have to clock in.
Although I work in Finland I don't need / have to use Finnish in my job because everyone speaks
English.
We tend to use have to and not must when giving instructions - must sounds impolite.
Alternatively we use the imperative (with please). Please visit our website where you will find details
of all our prices.
We use must when we give ourselves orders. Must is also found in warnings and notices.
I must answer all those emails.
We must get ourselves a new filing system.
Helmets must be worn on the building site at all times.
We use must not to prohibit something.
You mustn't smoke in a non-smoking compartment.
A Underline the correct form in italics.
1 We don't have to / mustn't work tomorrow because it's a public holiday.
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