Can anyone give me some explanation about this sentence:
A more dramatic rise is predicted between 2030 and 2040 in Japan, by
which time it is thought that the proportion of elderly people will be
similar in the three countries.
What time does "by which time" refer to? 2030, 2040, or the whole period?
Best Answer
A sentence with "by which time" pretty much always is used along side a single point in time.
In these examples the phrase has been used with "One day", "November", "December", indicating a single point in time. The segment with "by which time" always comes with a comma(,) before and some scenario X after the phrase.
The use of the phrase "by which time" always means that
My understanding is that, the example "between 2030 and 2040" also means same thing i.e.
If the example was meant to indicate the period of time from 2030 to 2040, then the sentence would have been written(or the correct way to write it would be) as
Nevertheless the sentence "2030-40" could have been phrased better to avoid confusion.