①Winter comes after autumn and before spring. It brings snow and ice. Here are different ways to know it's winter:
②The days are short and the nights are cold. The winter solstice(冬至) is the start of the coldest days in winter, and it is the shortest day of the year!
③The sun isn't warm in winter. There is lots of snow in winter. People and animals don't like to go outside.
④In winter, when you look outside, you'll see a lot of brown things, not the green ones. There are no leaves on most of the trees.
⑤Some animals hibernate. They sleep in winter. But others keep food in autumn to eat in winter, because it is difficult to find food. Many birds fly from the north to warm places for the winter. They will come back when spring comes.