"我们夏天不上学。"

Translation: We do not go to school in the summer.

[OKAMOTO_Yusuke]

"in summer" is also correct. "We do not go to school in summer" should be accepted. Reported on Nov. 19, 2017.

[Hedwigechouette]

"we don't go to school in summer" is what I had also. Agree it should be accepted

[Rumi904395]

during the summer, we do not attend school should be accepted (jan 4th 2018)

[Hsn626796]

Why is 夏 by itself summer but we still have to write 夏天 ?

[Denis.nkn]

I suppose is to avoid misunderstandings with many other homophones in Chinese. There are a lot of examples like this: 干燥，衣服，付款，计算，洗澡 ecc.

[DevonLoughran]

Last question ”这里在冬天下雪吗“ uses 在 before the season. Can this be omitted as is the case for this question?

[DuaneBeye]

The, is not needed in this sentence and is awkward when used.

[Nanani6]

Why is it not 在夏？ would that mean the same thing?