Unless
Study th is example situation:
  The club is for members only.
  You can,t go in unless you are a member.
  This means:
  You can,t go in except 1[you are a member.
  You can go in only if you are a member.
  Unless= except if.
Some more examples of unless:
   0 l,ll see you tomorrow unless I have to work Late. (=except if I have to work late)
   0 There are no buses to the beach. Unless you have a car, ifs difficult to get there.
       (=except if you have a car)
   C 'Shall I tell Liz what happenedt 'Not unless she asks you., (=only if she asks you)
   C Sally hates to complain. She wouldn't complain about something unless it was really bad.
       (= except if it was really bad)
   0 We can take a taxi to the restaurant- unless you'd prefer to walk. (=except if you,d prefer
      to walk)
Instead of unless it is often possible to say if ... not:
     0 Unless we Leave now, we,ll be late. or If we don't Leave now, we, ll ...
As long as I provided I providing
     as long as or so Long as                }                               ,   ,                ,
     prov1·de d (th at) or prov1.d.mg (th at) All t hese expressions mean 'if or on condition that .
For example:
    0    You can borrow my car { as Long
                                    L
                                         as }         .
                                              you prom1se not to d nve
                                                                    .
                                                                       too f ast.
                                 so ong as
         (=you can borrow my car, but you must promise not to drive too fast- th is is a condition)
               . by car .IS convenient
    0 Trave ll 1ng                .    { provided
                                              .d.
                                                  (that) }  h         h          k
                                                   ( h ) you ave somew ere to par .
                                         prov1 mg t at
         (=but on ly if you have somewhere to park)
    0    Providing (that) } h
         Provided (that)
                                     . l        d , · d h' h h l
                            t e room 1s c ean, I on t mm w 1c ote we stay at.
         (=the room must be clean - otherwise I don't mind)
Unless I as Long as etc. for the future
When you are talking about the future, do not use will after unless I as Long as I so Long as I
provided I providing. Use a present tense (see Unit 25):
    0 I'm not going out unless it stops raining. (not unless it wi ll stop)
    0 Providing the weather is good, we're going to have a picnic tomorrow.
         (not providing the weather will be good)
    __u__      zs_,_3_s_-_4_o___________________________________________________________)
         ni_ts__
                                                                                                                                                                                                           Unit
Exercises                                                                                                                                                                                                 ' 115
    • . , Write a new sentence with the same meaning. Use unless in your sentence.
          1 You must try a bit harder or you won't pass the exam .
             ..You .. w9.n.>.t- _trle ..   ..      you       .0:-- bLt.                                                no.xcler._, . ..... .. ....... . ...
          2 Listen carefully or you won't know what to do.
            You won't know what to do       ....... ..... .......
          3 She must apologise to me or I' ll never speak to her again.
          4 You have to speak very slowly or he won 't be able to understand you.
         5 Business must improve soon or the company will have to close.
         Write sentences with unless.
         1 The club isn't open to everyone. You 're allowed in only if you're a member.
                 ...      ..       ...    ...4ub ...        m..
                                                        ... !J0..0..l.re     ..·.. .............. .... _......... .
         2 I don't want to go to the party alone. I'm going only if you go too.
           I'm not going .... .. . ..... ... ........... ... .... . . .... . . .... .... ...... .. .. ....................... ..
         3 Don 't worry about the dog. lt will attack you only if you move suddenly.
           The dog .... .................. .... ....................... .... .. ........................... ...................................... ................................ ..................
         4 Ben isn't very talkative. He'll speak to you on ly if you ask him something.
           Ben ...       ... .......... .... ................ . ......... ... .. ............... ................... .............. ..
         5 Today is a public holiday. The doctor will see you only if it's an emergency.
           The doctor . . . ...... ...   ......... .... .... . .. .................................
-        Which is correct?
         1 You can borrow my car unless I as long as you promise not to drive too fast .
           (as long as is correct)
         2 I'm playing tennis tomorrow unless I providing it rains.
         3 I'm playing tennis tomorrow unless I provid ing it doesn't ra in .
         4 I don't mind if you come home late unless I as long as you come in quietly.
         5 I'm going now unless I provided you want me to stay.
         6 I don't watch TV unless I as long as I've got nothing else to do.
         7 Children are allowed to use the swimming pool unless I provided they are w ith an adult.
         8 Unless I Provided they are with an adult, children are not allowed to use the swimm ing pool.
         9 We can sit here in the corner unless I as long as you'd rather sit over there by the window.
        10 A: Our holiday cost a lot of money.
           B: Did it? Well, that doesn't matter unless I as long as you enjoyed yourselves.
         Use your own ideas to complete these sentences.
         1    We'll be late unless       ... get-.. Ov....             . ... .....                 ........ ...... ........... ....... ..                            ........ ........ ......... . .
         2    I like hot weather as long as ......... .... ... ....... ... . . . . .           ............. .... . ...... ... ................                       ............................... .
         3    lt takes about 20 minutes to drive to the airport provided .. ............ ....... ......... . .................. .. .......................
         4    I don't mind walking home as long as .. .                      .... .......... ........... ..             ........ . .......... .. . .. .......... .. .............. ..
         5    I like to walk to work in the morn ing unless .. ........... ........ ... ...... . ......................... ................................................................... .
         6    We ca n meet tomorrow unless                                    .............. .
         7    I can lend you the money providing ........................................................................................................................................ .
         8    You won't achieve anything unless                           .. ... ......... . ............ ... .......... ........ .....               .................................... .
-+ Additional exercise 32 (page 321)                                                                                                                                                                      231