详细解释
半
1、(会意。从八,从牛。“八”是分解的意思;牛大,易于分割,所以取“牛”会意。本义:一半,二分之一)。
2、同本义。
半,物中分也。---《说文》
今汉有天下太半。---《汉书·高帝纪上》
士卒食半。---《汉书·项籍传》
先帝创业未半而中道崩殂。---诸葛亮《出师表》
半匹红绡一丈绫。---唐·白居易《卖炭翁》
身已半入,只露尻尾。---《聊斋志异·狼三则》
太半：三分之二
半日;半工;半升
3、部分的,不完全的。
犹抱琵琶半遮面。---唐·白居易《琵琶行(并序)》
半自动;半老头;半工半读;半半拉拉;半死;半信半疑;一知半解
4、比喻极少的。
而侯生曾无一言半辞送我。---《史记·魏公子列传》
一星半点;半歇：一会儿
半星儿：半点儿
半丝麻线：些微私弊。
例句
最近的银行沿着这条路要走半英里。
The nearest bank is about half a mile down the road.
这条路横跨城外半英里处的那条河。
The road crosses the river half a mile outside the town.
彼得，你得一半的钱。明白吗？
Peter, you get half the fees. All right?
这儿只有一半的人有拿工资的工作。
Only half the people here are in paid employment.
一单位酒精等于半品脱啤酒。
One unit of alcohol is equal to half a pint of beer.
我忧心忡忡，半宿不能成眠。
I was awake half the night worrying.
从节食以来，我体重已减轻了六磅半。
I've lost six and a half pounds since I started my diet.
窗帘拉上了一半以遮挡阳光。
The curtains were half drawn to cut out the sunlight.
我的回答约有一半是正确的。
I got about half the answers right.
他拥有该公司的一半股份。
He has a half share in the company.
你要全食宿还是半食宿？
Do you require full or half board?
我们得把重量减轻一半。
We'll need to reduce the weight by half.
几乎一半学生来自海外。
Nearly half the students come from overseas.
我只做了一半，很遗憾。
I've only done half of it, I'm sorry to say.
他把那笔钱扣下了一半。
He kept back half the money for himself.
我把钱平均分成了两半。
I've divided the money in half.
她就住在半英里之外。
She lives just half a mile away.
工作已经完成了一半。
Half (of) the work is already finished.
剧场只坐了一半观众。
The theatre was half empty.
职工人数裁减了一半。
The workforce has been slashed by half.
那根蜡烛烧掉了一半。
Half the candle had burnt away.
那些钱有一半是我的。
Half of the money was mine.
地毯只够覆盖半间屋。
The carpet only reached halfway across the room.
那钟慢两分半左右。
The clock is about two and a half minutes slow.
他梯子上到了一半。
He was halfway up the ladder.
他的双眼半闭着。
His eyes were half closed.
水果坏了一半。
Half (of) the fruit was bad.
她是一半意大利一半英国血统。
She was half Italian and half English.
她用斧头把他的颅骨劈成两半。
She cleaved his skull (in two) with an axe.
农场被淹，收成损失了一大半。
The farm was flooded, with the result that most of the harvest was lost.
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