冬天的时候，天黑得很早。

Dōngtiān de shíhou, tiān hēi de hěn zǎo.

In winter it gets dark very early.

冬天这里常常下雪。

Dōngtiān zhèlǐ chángcháng xiàxuě.

In winter it often snows here.

冬天要多穿一点衣服。

Dōngtiān yào duō chuān yìdiǎn yīfu.

In winter you should wear more clothes.