Suppose, supposing and what if
Suggestions
We use suppose, supposing and what if + present verb form to make suggestions about what might happen:
A:
What time shall we meet?
B:
Supposewe meet in the offices downstairs at four o’clock?
A:
That’s perfect. I’ll let the others know.
Supposing I don’t bring my car and you and I travel together. That would save us half the cost of petrol and parking.
A:
The electricity has gone. There must be a power cut.
B:
What ifwe find the candles and put them around the room?
A:
Okay. Good idea. Do you know where they are?
Possibility
When we are less certain, we use suppose, supposing and what if + past form to talk about future possibility: Suppose we asked Mary to baby-sit? Do you think she’d do it? (not as certain as Suppose we ask Mary to baby-sit?)
Supposing someone else wrote the essay. How would we know? (not as certain as Supposing someone else writes the essay …)
A:
What ifI gave up working full-time. I’d love that.
B:
You’re joking surely!!
When we refer to something that did not happen (something hypothetical), we use the past perfect: Suppose we hadn’t brought our umbrellas. (We did bring our umbrellas.)
Supposing they had closed the road. Would that have been a good idea? (They didn’t close the road.)
What if I had accidentally told Maria about the party! That would have ruined the surprise. (I didn’t tell Maria about the party.)
Warning:
We use be supposed to to talk about obligations and arrangements, not suggestions. You are supposed to put money in the parking meter!
See also:
Be supposed to
Suggestions
How
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