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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。
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。
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。
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
The heavy rain has spoilt the flowers in the park.
这阵大雨把公园里的花全浇坏了。
Some kinds of food soon spoil.
有些食物易变质。
I spirited him with a cup of coffee.
我用一杯咖啡让他清醒起来。
The room is square.
房间是正方形的。
The bugle sounded as the troops advanced.
军号吹响前进的号令。
A colonel is three steps above a captain.
上校比上尉的级别高三级。
Not being sure of the word, he turned it up in the dictionary.
他对那个词没有把握, 于是就查字典。
He supposed himself doing the best thing.
他以为他做得最好。
Will you sound John as to whether he would accept the post when offered?
你试探一下约翰的意见, 如果让他干的话, 他是否会接受这个职位。
His accent is quite special.
他的口音非常特别。
This soup is too bland for me.
这汤我喝起来偏淡。
I'm sure that she will like this book.
我确信她喜欢这本书。
There was a steep rise in prices.
价格暴涨。
She steered the car skilfully through the narrow streets.
她熟练地驾驶着汽车穿过狭窄的街道。