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Unit 12 The Internet Warnings with must/must not, should/should not

Where might you see these warnings?

1. Never give out your home address or phone number.

2. This appliance must be earthed.

3. Avoid turning off main power while computer is running.

4. It is an offence to make unauthorised access to computer material.

5. No smoking, eating or drinking at the computer.

6. A machine which has been exposed to a moist atmosphere should be given time to dry out before being put into use.

Warnings are used to ensure safety, to prevent damage to equipment and breaches of security, and to ensure the law is not broken. The simplest warnings are basic instructions NOT to do something:

Don't do X. Avoid Xing.

No Xing. Never do X.

Sometimes the warning is twinned with matching good practice:

Always do Y; never do X.

Do Y rather than doing X.

Warnings may be made stronger by using must/must not and in some cases should/should not. For example:

The wire linking a static earthing band to earth must contain a resistor of at least 1 megohm.

If there is any reason to fear the warning may not be understood, a reason for the warning may be added. For example:

Never remove ICs with a screwdriver. The pins are very fragile.

I Rewrite each of these warnings according to the prompt.

1. Avoid giving access to PCs because you may get viruses.

Don’t …

2. Never use your floppies on these machines.

You must not …

3. Don’t give financial information in a chat room.

Avoid …

4. Always keep your password secret. Someone may try to hack into your system.

Never …

5. You must not work on a computer with the power on because you may be electrocuted.

Always ensure …

II Restore the original sentences.

1. earthed / this / must / appliance / be

2. removed / from/ cards / required / packing / until / must not / their / be / anti-

static

3. you / files / back up / to / losing / regularly / data / avoid / should / your

4. screwdriver / integrated circuit / should / you / than / a / you / use / an /

extraction tool / rather

5. each / know / Internet / they / other’s / addresses / must

III Correct mistakes.

1. Don’t use up-to-date anti-virus software.

2. Always wait until a computer reached normal room temperature before using it.

3. Any free ISP that changes an initial set-up or administration fee should not be avoided.

4. Web-based mail allow users to access their email from any computer with

Internet access.

5. Computer-Mediated Communication is a term using to describe systems that allow users to communicate using a computer network.

IV Fill in the gaps with the appropriate modal verb (should, can, have to).

1. Although using the isp (Internet Service Provider) is free, you still …. Pay for your online time.

2. Any free ISP that charges an initial set-up or administration fee … be avoided.

3. Having several email accounts is very useful – you … separate business and

personal email or provide an address for each member of the family.

4. Internet addresses … be written as a series of numbers that identify the major network.

5. To avoid losing data, you …. back up your files regularly.

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