nine of + plural noun/pronoun
表示某个整体中的九个，后面接复数名词或代词。
Nine of the ten students passed the exam.
十个学生中有九个通过了考试。
九点牌；九点的扑克牌；九毫米口径的半自动手枪；9毫米手枪；棒球队；九人棒球队；数字9；基数九
the number 9; the digit or figure 9
数字9
The digit or figure 9.
基数九
the cardinal number that is the sum of eight and one
有九个点的扑克牌
A playing card with nine pips.
职业棒球队
a team of professional baseball players who play and travel together
九毫米半自动手枪
A nine-millimeter semi-automatic pistol.
九点纸牌
one of four playing cards in a deck with nine pips on the face
棒球队(由九名球员组成)
A baseball club, team, or lineup (composed of nine players).
Nine is the number that comes right after eight.
九是紧跟在八后面的数字。
用法提示：nine 作名词，在句中作主语，表示数字九。
She rolled a nine with the dice and moved her piece forward.
她掷出了一个九，把棋子向前移动了。
用法提示：nine 作名词，作 rolled 的宾语，指掷出的点数九。
The last digit of my phone number is a nine.
我电话号码的最后一位数字是九。
用法提示：nine 作名词，在句中作表语，指数字九。
表示某个整体中的九个，后面接复数名词或代词。
Nine of the ten students passed the exam.
十个学生中有九个通过了考试。
作可数名词，指一张九点的牌；也可指九毫米口径的手枪。
She drew a nine from the deck.
她从牌堆里抽出一张九点的牌。
用于表示比例，结构为“数字 + out of + 数字”。
Nine out of ten people agreed with the plan.
十个人中有九个人同意这个计划。
grammar · medium
易错句子My birthday is on May nine.
正确表达My birthday is on May ninth.
英语中具体日期要用序数词，如 May ninth（五月九日）。基数词 nine 不能用来表示日期中的“第几”，因此应改为序数词 ninth。
grammar · medium
易错句子I have nine years old.
正确表达I am nine years old.
英语中表示年龄用 be 动词，如 I am nine years old。汉语“我有九岁了”直译成 have 是常见错误，应改为 am。
grammar · medium
易错句子My phone number has three nine.
正确表达My phone number has three nines.
nine 作名词表示数字9时是可数名词，复数形式为 nines。基数词 nine 本身不能表示多个数字9，需用复数形式。
十有八九
Nine times out of ten, he arrives late.
十有八九，他都会迟到。
非常高兴
She was on cloud nine after winning the award.
她获奖后高兴极了。
朝九晚五的工作
He works a nine-to-five job at the office.
他在办公室做朝九晚五的工作。
穿着华丽
They were all dressed to the nines for the party.
他们都穿着华丽去参加派对。
棒球队由九名队员组成。
nine 可指一支职业棒球队。
扑克牌中九点牌为 nine。
纸牌上的九点标记。
nine 是基数词，表示数字9。
十之八九
Nine times out of ten, he forgets his keys.
十之八九，他会忘记带钥匙。
非常高兴
She was on cloud nine after receiving the job offer.
收到工作offer后，她高兴极了。
穿着华丽
Everyone was dressed to the nines at the gala.
晚会上每个人都衣着华丽。
我飘飘欲仙。
After hearing the good news, she said, 'I'm on cloud nine!'
听到好消息后，她说：‘我飘飘欲仙！’
朝九晚五地工作
Dolly Parton's song '9 to 5' popularized the phrase 'workin' nine to five' to describe routine office jobs.
多莉·帕顿的歌曲《9 to 5》使‘朝九晚五地工作’这一说法流行起来，用来描述常规的办公室工作。
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Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.