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In going down town, I met an old friend.(= Going down town,etc.)(到市中心商业区去时,我遇到一个老朋友。)
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After having finished my work, I went to bed.(= Having finished my work,etc.)(做完事,我就去睡了。)
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英文疑难详解 119.doubt 后的连词用 whether 或是 that
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在 doubt 后面接上子句( Clause)时,连词有时用 whether,有时用 that,不知有无规定?在动词或名词的 doubt 外,还有形容词的 doubtful.后接子句时,是否都可用 whether 作连词?
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【解答】基本原则是肯定句用 whether,if,when,what 等作连词,否定句或疑问句就用 that,but,but that 作连词,二者不可混乱。动词、名词、形容词,都是一样,例如:
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1.“我怀疑此事是否真确。”
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{ I doubt | It is doubtful | There is a doubt } whether it is true.
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2.“此事真确无疑。”
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{ I don’t doubt | I have no doubt | There is no doubt } that it is true.
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3.“谁会怀疑此事是否真确?”
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Who doubts that it is true?
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“你能怀疑他不会赢吗?”
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Can you doubt that he will win?
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连词 that 有时略去,whether 则应保留。在否定句的 no doubt 后面有时可再加 about it 的字样,但要不要意思一样,如:
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There is no doubt about it that he will win.= There is no doubt that he will win.
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比较:
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I doubt whether he will come soon.(我想他不会很快就来。)
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I doubt whether he will not come soon.(我想他很快就会来。)
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作名词用的 doubt,可说 a doubt 或 no doubt,如 I have no doubt about it.都是用的单数,但无冠词或否定字时,则必须用复数,如 I have doubts about it.又 in doubt 一个片语,有“怀疑”或“迷惑”二解,如:
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It was still in doubt.(那还是疑问。)
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I am in doubt what I ought to do.(我不晓得要怎样办。)
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这个动词 doubt 不作“怀疑”解,而用作“恐怕”(fear,be afraid)之意的,是古语的遗留,例如:
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I doubt we are late.(我们恐怕迟了。)
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