haveto/must
Which one should I use and why?
Europe has therefore to assume a positive role to be master of its future.
Europe must therefore assume a positive role to be master of its future.
I would use the second becaues it sounds much more natural. Although you could get away with the first sentence so long as you were writing in a fairly elevated style.
2JW
so you assume that in present-day English 'have to' sounds a bit less colloquial than 'must' does? It's strange. I have always thought the opposite.
It's more the splitting of 'have to' with 'therefore' which makes it seem elevated. You could say:
Europe therefore has to assume a positive role to be master of its future.
Yes. "Have to" is never split in normal speech, so doing it makes you sound really formal...
<Yes. "Have to" is never split in normal speech, so doing it makes you sound really formal...>
As would be expected in certain comments about European politics. Use formality where necessary.