Word
9
九
核心释义
the number nine; the cardinal number that is the sum of eight and one
- 1.
基数,八加一的和
the cardinal number that is the sum of eight and one
基数,八加一的和
用法In use
If you add 8 and 1, you get 9.
用法提示：“9”在这里作名词，表示八加一所得的数字九。
My little sister can count to 9 now.
用法提示：“9”作介词to的宾语，是名词，指数字九。
The number 9 is my lucky number.
用法提示：句中“9”作名词，与number同指，表示基数九。
nine of + plural noun
用于说明某一确定范围内的数量，后接带限定词或明确的复数名词、代词。
Nine of the twelve players were rested before the final.
十二名球员中有九人在决赛前得到了休息。
nine out of ten + plural noun
表示比例，也可说 nine in ten，多用于调查、统计类语境。
Nine out of ten customers said they would come back.
十位顾客中有九位表示他们会再来。
nine times out of ten
固定说法，意思是“十有八九”，用来表示某事几乎总是如此，通常置于句首并加逗号。
Nine times out of ten, the train is late on Monday mornings.
周一早上火车十有八九会晚点。
常见错误Common mistakes
易错句子She has a nine-years-old son.正确表达She has a nine-year-old son.
复合形容词放在名词前作定语时，中间的名词要用单数并加连字符，写成 nine-year-old，不能保留复数 -s；复数形式 years 只出现在作表语的句型里，如 Her son is nine years old.
易错句子There are nine hundreds students in the hall.正确表达There are nine hundred students in the hall.
hundred、thousand、million 前面有具体数字时要用单数，词尾不加 -s；只有表示不确切的数量时才用复数加 of，如 hundreds of students（成百上千的学生）。
易错句子This is my nine time to visit Beijing.正确表达This is my ninth time to visit Beijing.
表示“第几次”这样的次序要用序数词 ninth；nine 是基数词，只用来计数，不能修饰 time 表示顺序。
相关词与表达Connections
Dictionary facts from ECDICT, WIKTIONARY.