Alternatives in dependent clauses

The idea

Use whether before the first alternative and or before the second. Keep corresponding structures parallel: two adjectives, two clauses or two infinitives.

Examples

• I wonder whether the bridge is open or closed.
• We must decide whether to walk or to cycle.
• The guide asked whether we wanted tea or coffee.
• Whether the parcel arrives today or tomorrow, someone will collect it.
• The report does not say whether the shop will expand or move.
• Please tell us whether the room is quiet or noisy.

Watch out

Do not mix an infinitive with a finite clause as if they were parallel choices. Whether can also introduce a clause without an explicit second alternative.

Try it yourself

1. Choose the correct option. We have not decided ___ to rent or to buy. (whether / that)

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   whether

   whether introduces the two choices after the decision.

2. Choose the correct option. I cannot tell whether the light is on ___ off. (or / and)

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   or

   or separates the opposite states of the light.

3. Choose the correct option. They discussed whether to stay or ___. (to leave / leaving)

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   to leave / leave

   to leave parallels to stay; the second to may also be omitted in natural English.

Use it today

Write an indirect question about two possible plans.