in spring? or in the spring?

Question

please explain me the difference: my textbook offers two examples: 1. I wear a hat in spring. 2. a page about the preposition "in" proposes a little vocabulary where I see "in the spring, in the autumn" - does the latter mean some particular autumn... and what is the logic, please....

Answer 1

I don't see any objection to saying: "I wear a hat in the spring." I speak UK English and from the use of "autumn" instead of "fall" I assume that the author of your book does too.
I wonder if it is a question of where one comes from in the UK? Robert Louis Stevenson, a Scot, wrote the following poem:
I. Bed in Summer
In winter I get up at night
And dress by yellow candle-light.
In summer quite the other way,
I have to go to bed by day.
I have to go to bed and see
The birds still hopping on the tree,
Or hear the grown-up people’s feet
Still going past me in the street.
And does it not seem hard to you,
When all the sky is clear and blue,
And I should like so much to play,
To have to go to bed by day?

Perhaps the two chapters in your book were written by people from different parts of Britain?

Answer 2

Hey, this is English. We don't use logic. I don't see any difference between the two examples you have given. If a specific spring, such as spring of 1964, was wanted then you should use 'the'.