1
it is sunny
用于描述天气状况。
It is sunny today.
今天天气晴朗。
晴朗的；阳光充足的
先理解核心含义，再看它在真实句子里的用法。
晴朗的；阳光充足的
Full of or exposed to sunshine.
It is sunny today.
今天天气晴朗。
阳光充足的
Featuring a lot of sunshine.
向阳的；日照多的
Receiving a lot of sunshine.
开朗的；快乐的
Cheerful.
与太阳有关的；来自太阳的；像太阳的；明亮的；灿烂的。
Of or relating to the sun; proceeding from, or resembling the sun; shiny; radiant.
We decided to have a picnic because the weather was sunny.
因为天气晴朗，我们决定去野餐。
This is the sunniest room in the house, so I put my plants here.
这是整座房子里阳光最充足的房间，所以我把植物放在这里。
They moved to a sunnier city to enjoy more outdoor activities.
他们搬到了一座阳光更充足的城市，以便享受更多户外活动。
用于描述天气状况。
It is sunny today.
今天天气晴朗。
形容事物令人愉快或充满阳光。
She has a sunny smile.
她笑容灿烂。
表示逐渐变得更晴朗。
The weather got sunnier in the afternoon.
下午天气变得更晴朗了。
Not this
The sunny is very bright today.
Use this
The sun is very bright today.
sunny是形容词，不能用作名词表示太阳或阳光；应使用名词'sun'（太阳）或'sunshine'（阳光）。
Not this
Today is more sunny than yesterday.
Use this
Today is sunnier than yesterday.
sunny的比较级是sunnier（y变i加er），而不是加more；规则是单音节和部分双音节形容词（以y结尾）用-er形式。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
晴天
We spent a sunny day at the beach.
我们在海滩度过了一个晴天。
晴朗的天气
The forecast promises sunny weather for the weekend.
天气预报说周末是晴朗的天气。
开朗的性格
She is known for her sunny disposition.
她以开朗的性格而闻名。
阳光明媚的一侧
I prefer to sit on the sunny side of the room.
我更喜欢坐在房间阳光明媚的一侧。
阳光充足的地方
Find a sunny spot for the picnic.
找一个阳光充足的地方野餐。
乐观的看法
He always has a sunny outlook on life.
他对生活总是抱着乐观的看法。
单面煎的（鸡蛋）
I ordered my eggs sunny side up.
我点了单面煎的鸡蛋。
不到……岁（指年龄）
She's still on the sunny side of 30.
她还不到30岁。
开朗的性格
He is known for his sunny disposition.
他以开朗的性格著称。
阳光明媚，昨天我的生活充满了雨水。
On a sunny day, I feel happy.
在阳光明媚的日子里，我感到快乐。
阳光灿烂的日子，扫去乌云。
The children sang about sunny days on the show.
孩子们在节目中歌唱阳光灿烂的日子。
Use sunny naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
太阳（sun）出来，天气晴朗，心情自然 sunny（阳光的）。
通常用于中性语境，多用于描述天气或人的性格。
形容词，可作定语或表语；有比较级 sunnier 和最高级 sunniest。
Dictionary facts from ECDICT, WIKTIONARY.