You should say:
what season it is
what the weather is like at this time
what people usually do at this time (or, what you usually do)
and explain what is special about that season.
口语素材(春夏秋冬)：
Spring:
My favourite is the end of Spring, it rejuvenating.
I like spring because grass grow up, flowers and trees flourish. Everything is 'mud-luscious' and 'puddle-wonderful'
My favorite is spring, autumn running a close second. I work in my yard frantically in the spring, then it gets too hot and I get lazy.
The snow melts, creeks unfreeze. Trees are green & the flowers are in full bloom.
I enjoy seeing flowers blooming, nature coming alive, and not having to wear heavy coats anymore.
I love to observe flowers blooming, butterflies and bees flying joyfully around the flowers for honey.
Summer:
School's finished. There's no class. Great holiday.
I can go with my friends to the beach to do surf, to take the sun, to take a walk by the sand or to go to the swimming pool.
You can go to the beach and you have sunbath.
I like spending much time hanging out with my friends, having fun together and eating a lot of ice-cream..
I enjoy looking up at the trees and seeing the birds singing and the leaves flapping in the wind
i love the summer because its so bright and cheerful and welcoming. you can do so much and wear so little like going to beaches and get tanned.
summer is bomb, the ladies look so nice.
Autumn:
It is a harvest season. No pain, No Gain!
Autumn is neither extremely hot nor extremely cold
the days are short and the nights are long. The sun rises late and sets early, So I can do my favourite things in the evening.
I can feel the crunchy leaves under my feet.
i like autumn and spring because its chilly outside.
People fly kites and walk on the esplanades; Youths have a camping trip at weekends.
Winter:
I prefer winter to summer because I hate heat, humidity, sweat and bugs. Also, there's always torrential downpours in summer..
I sleep a lot better in cool atmospheres. I feel it's a lot easier to get warm, than to cool down.
Snow is crunching under your feet. Trees are covered with the snow.
Looking out the window and see swirling snowflakes and a glistening white dreamscape.
Snowman building, snowball fights.
I like the oodles of booty that come in December-X'mas! Mistletoe!
Cramming some people on a sofa in front of a hot, crackling fireplace with steaming hot cocoa in hand.
Cuddling up on a verandah(balcony) with some you like at those cozy nights.
rejuvenating: 恢复活力，重焕青春的
flourish: 繁荣,茂盛,活跃
luscious: 浓厚的
frantically: 疯狂似地
melt: 熔化,溶解
unfreeze: 溶化,冻
in full bloom: 盛开
sunbath: 日光浴
flapping: 摇摆
cheerful: 高兴的
tan: 晒
harvest season: 收获季节
crunchy: 发嘎吱嘎吱声的
chilly: 寒冷的
camping trip: 野营
torrential downpours: 倾盆大雨
swirling snowflakes: 旋转的雪花
glistening white: 闪光的白色
oodles of booty: 许多礼物
Mistletoe: 一种常用作圣诞节室内悬挂的植物
crackling: 发劈啪声
cuddling up: 一起搂着坐(睡)
cozy: 温馨的
