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cheery + noun
形容词修饰名词，位于名词前。
She had a cheery smile.
她露出了愉快的微笑。
愉快的；高兴的
cheerier — comparative of cheery
先理解核心含义，再看它在真实句子里的用法。
愉快的；高兴的
bright and pleasant; making you feel cheerful
She had a cheery smile.
她露出了愉快的微笑。
心情好,快乐,愉快
In a good mood, happy, cheerful.
A cheery waiter brought us our breakfast with a smile.
一位愉快的服务员面带微笑给我们端来早餐。
The room feels much cheerier with the new paint and fresh flowers.
有了新油漆和鲜花，这个房间感觉明亮愉快多了。
They painted the front door a cheery red to welcome visitors.
他们把前门漆成明快的红色来欢迎来客。
形容词修饰名词，位于名词前。
She had a cheery smile.
她露出了愉快的微笑。
系表结构，描述主语的状态。
The children were cheery despite the rain.
尽管下雨，孩子们还是很快乐。
比较级或最高级形式用于比较或强调。
This room looks cheerier with the new curtains.
这个房间挂了新窗帘后看起来更令人愉快了。
Not this
He greeted us cheery.
Use this
He greeted us cheerily.
cheery是形容词，不能修饰动词。此处需要副词cheerily来修饰greeted。
Not this
She spread cheery everywhere.
Use this
She spread cheer everywhere.
cheery是形容词，不能作名词。表示欢乐的名词是cheer，spread cheer是固定搭配。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
愉快的微笑
She greeted us with a cheery smile.
她带着愉快的微笑迎接我们。
愉快的语气
His cheery tone lifted everyone's spirits.
他愉快的语气让大家精神一振。
开朗的性格
Despite the setbacks, she kept a cheery disposition.
尽管遇到挫折，她仍保持开朗的性格。
愉快的问候
He gave us a cheery greeting at the door.
他在门口愉快地向我们打了招呼。
高兴的挥手
She gave a cheery wave as the train left.
火车开走时她高兴地挥了挥手。
令人愉快的氛围
The café has a cheery atmosphere in the morning.
这家咖啡馆早上有一种令人愉快的氛围。
Use cheerier naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 cheery 拆成 cheer（欢呼）+ y，记住：心情愉快得像在欢呼，就是 cheery。
语域：informal 常见场景：casual conversation、friendly greetings、informal writing cheery 通常带有轻松友好的语气，多用于日常对话和非正式写作；正式文体中使用较少，正式场合可考虑用更中性的 cheerful。
与 cheery（/ˈtʃiəri/）押韵的词：beery、leery、dreary、weary、eerie（/ˈbɪəri/、/ˈlɪəri/、/ˈdrɪəri/、/ˈwɪəri/、/ˈɪəri/）。注意 cherry（/ˈtʃeri/）拼写相似，但读音不同。
Dictionary facts from ECDICT, WIKTIONARY.