If or Whether The words 'if' and 'whether' are sometimes interchangeable However, this is not always the case If 'If' is used to introduce a condition (i.e., in a conditional sentence) In a conditional sentence, a condition has to be satisfied before something occurs Peter will catch you if you fall Whether and If When reporting yes/no questions I am unsure whether I will be attending the party I am unsure if I will be attending the party In whether/if or constructions I would like to know whether it is a true story or fabricated I would like to know if it is a true story or fabricated Whether/ If Comment the usage Whether To present two alternatives (neither of which is a condition) Inform the clerk whether Mark needs a seat (In this example, the two alternatives are 'Mark needs a seat' and 'Mark does not need a seat' The clerk is to be informed in either case.) After prepositions would like to talk about whether you are going to California Before infinitive verbs starting 'to' I have been thinking whether to grow my own tomatoes this year When 'whether' starts a clause that is the sentence subject or object you sink or swim is not my concern 11.Whether _she fails, it will destroy her I can't decide to buy a 12 I am going to complain _the referee is right ('Whether you sink or swim' isagree the subject of this sentence.) 13 I don’t know _to bicycle 14 We need a decision on the second answer is also Tom asked Julie _ she'd like correct to go to the cinema 15 The game will be abandoned _it snows You've to go to school _ you like 16 Its longevity may depend on _it starts to lay eggs it or not! 17 _to run or hide is a dilemma I face on a daily basis Caroline might come 18 Go to the party you must It depends on _ she has a car or 19 I need to talk about the kids are old enough to not travel on their own We're not sure _ we're going 20 I go, you'll have to stay to change offices 21 I have been wondering _to build my own house _ I buy the cake or make it 22 I am not certain about he will go or not myself won't make it less fattening! 23 they say it or not, most teachers expect their I wonder I should students to study hard mention it to my boss 24 _students study hard, teachers will be happy He really doesn't care it 25 _ you sing, I'll pay you ten pounds suits everyone Answer key I'm not sure _ I'll have time to go to the hairdressers 10 The price doesn't change you travel Whether by car or by train If Whether 26 Please establish a committee to determine the proposed funding lines are appropriate 27 Let Anna know _the boss is able to go to London 28 Most of us carry a water bottle with us when we exercise, _it is going for a walk or working out in the gym 4 Whether Whether/ if If Whether Whether Whether/ if 10 Whether/ if 11 If 12 Whether 13 Whether 14 Whether 15 If 16 Whether 17 Whether 18 If 19 Whether 20 If 21 Whether 22 Whether 23 Whether 24 If 25 If 26 Whether 27 Whether 28 Whether