The next five years is/ are going to be the worst time of my life.
Which should be correct?
I think it denotes a period of time & therefore should be followed by 'is'.
I would say, "The next five years will be the worst time of my life," as the next five years haven't/hasn't happened yet. If I had to decide between treating "the next five years" as either a single unit/period of time or as separate things, well, I would probably opt for the latter.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
I would say, "The next five years will be the worst time of my life," as the next five years haven't/hasn't happened yet.
If I had to decide between treating "the next five years" as either a single unit/period of time or as separate things, well, I would probably opt for the latter.