in vs. within?

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1 2
Hello! Could someone else explain the difference between 'in' and 'within' about time?

eg1 This is the worst water shortage in 4 years.

eg2 This is the worst water shortage within 4 years.

Thanks in advance!
Full Member155
Hello,

Ther eis not much difference between within and in but within implies more restriction. Errm, to understand better, make a search on the search box right above.
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In this case, only 'in' makes sense to me. I wonder what native speakers think.
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"In."
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florazheng1015Hello! Could someone else explain the difference between 'in' and 'within' about time?

eg1 This is the worst water shortage in 4 years.

eg2 This is the worst water shortage within 4 years.

Thanks in advance!

This is the worst water shortage in 4 years.

There has not been a water shortage as bad as this for four years.

I will finish it within the month = I will finish it before the end of the month.
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Within can work in the future tense. I totally agree with you, Optilang. However, in the context provided by the poster, the period spans back in time and I feel only 'in' sounds right. Would you use within? If so, does the meaning still remain the same?
For the sentence posted here I would only use 'in'.
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# 1 is the correct usage
# 2 is understood but sounds incorrect.

George Bush has managed to allow oil prices to rise from $25 a barrel when he took office to $148 In less than 8 years.

Within his 2 terms, his approval rating dropped sharply, along with the economy and quality of life.
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florazheng1015This is the worst water shortage in 4 years.
during the four-year period ending today
florazheng1015This is the worst water shortage within 4 years.
Anomalous. Here's a better use of "within".

This is the worst water shortage recorded within/in the four-year period from 1992 to 1996.
CJ
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