1
one and a half + [plural noun]
注意后面名词用复数形式。
I ate one and a half apples.
我吃了一个半苹果。
一个半；一又二分之一
先理解核心含义，再看它在真实句子里的用法。
一个半；一又二分之一
One and a half parts of anything that may be divided, or considered as divided.
I ate one and a half apples.
我吃了一个半苹果。
一又二分之一；可分割或视为分割之物的一个半部分。
One and a half parts of anything that may be divided, or considered as divided.
I need one and a half cups of flour for this recipe.
这个食谱需要一杯半面粉。
The movie lasted one and a half hours.
这部电影持续了一个半小时。
She has been waiting for one and a half years.
她已经等了一年半。
注意后面名词用复数形式。
I ate one and a half apples.
我吃了一个半苹果。
常用于时间、距离等度量单位。
The meeting lasted one and a half hours.
会议持续了一个半小时。
作主语时，谓语动词通常用单数。
One and a half is enough for me.
一个半对我来说足够了。
Not this
I waited for one and a half hour.
Use this
I waited for one and a half hours.
英语中，当数量超过一时，名词用复数形式。'one and a half' 表示一个半，超过一，所以后面应接复数名词。中文说'一个半小时'，名词'小时'不变，但英语需变为'hours'。
Not this
I need a one and a half hours to finish.
Use this
I need one and a half hours to finish.
'one and a half' 本身已包含冠词'a'（在'half'前），因此前面不能再加冠词。中文没有冠词概念，学习者容易加多余的'a'。
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Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
Use one and a half naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
名词用法表示数量“一个半”；复数形式 one and a halves 表示多个“一个半”的数量。
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from WIKTIONARY.