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我不能确定他在哪儿。用英语怎么说？

我不能确定他在哪儿。

I'm not quite sure where he is.

相关词汇
not quite sure where he is

not

adv. 不，[用以表示否定、否认、拒绝、禁止等]不是，几乎不，未必，没有[用于否定后面的词或短语]；

quite

adv. 相当，很，非常，确实如此；

sure

adj. 确信的，确实的，有把握的，无疑的，一定的；adv. 当然，确实地，无疑地；

where

adv. 哪里，在哪里，到哪里，某种情势或位置；conj. 在…的地方；n. 地方，场所；pron. 哪

he

pron. 他，它，一个人；n. 雄性动物；

is

vt.& vi. 是（be的三单形式；n. 存在；
热门例句
He acknowledged publicly that he might have made a mistake.
他当众承认自己可能犯了个错误。
...the spiralling vortex airflow that slows the plane.
使飞机减速的螺旋形气流涡旋
You just go on ahead. I'll come by later...
你只管先往前走。我随后就来。
He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打儿子的,是恨恶他;疼爱儿子的, 趁早管教.
For further information, please contact 414 3925, extension 2253.
详情请致电414 3925,转分机2253。
He sat there while I made the case for his dismissal...
他坐在那儿，听我陈述解雇他的理由。
Baroness Thatcher's claims seem credible to many.
撒切尔女男爵的主张在很多人看来是可信的。
Nothing to be got without pains but poverty.
一份耕耘，一份收获。
This decree obliges unions to delay strikes.
该法令迫使工会推迟罢工。
The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索权当有支付义务的第一方不能支付时，可以向商业票据的背书人要求支付的权力。
相关例句
He will approve such steps.
他会同意这些措施的。
As we have been practising regularly, we are sure of winning the game this time.
因为我们一直在训练, 所以这次比赛有把握赢。
I had a wonderful supper yesterday.
昨天我吃了一顿很棒的晚饭。
He is at supper.
他正在吃晚饭。
His theory is perfectly sound.
他的理论完全正确。
The slope is too steep for us to climb.
这斜坡太陡, 我们爬不上去。
I sniffed the medicine before taking a spoon of it.
我闻了闻药, 然后服了一匙。
He went straight from school to university.
他中学一毕业就马上进了大学。
I can't stick her.
我不能忍受她了。
Keep still while I fasten shoe.
站着别动, 我给你系鞋带。
The heavy rain has spoilt the flowers in the park.
这阵大雨把公园里的花全浇坏了。
It was a warm sunny day.
那是个温暖的阳光明媚的日子。
She stepped briskly out of the club.
她快步走出了夜总会。
This is a book on the subject of love.
这是一部以爱情为主题的书。