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在英语中按句型来说可以分为陈述句、疑问句、祈使句和感叹句四种，从结构上来说又可以分为简单句、并列句和复合句三种。句子的结构错误是构成句子完整结构的某一成分用错或者缺少，或者使用了多于成分而造成句意不清的错误类型。由于英语语法和汉语语法特点在结构上表现得十分明显，主、谓、宾结构在数、格、人称上的一致、连接手段的正确使用以及词序安排等，都与汉语有着相当大的差异，因此在改错中也是一大难点。句子结构错误类型包括：句子类型使用错误、句子成分短缺、平行结构错误以及词组搭配使用错误。 Yt;.Z$i ,
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下面通过一些例题来进行具体讲解： jVu3 !{}
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例 1 ?wx|n_3<:
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Computer analyzed marketing reports can help ^T|~L<A3
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本句中三个平行成分 which products to emphasize now, which to develop for the future, and which to be dropped 结构模式应该一致，均采用不定式主动语态，因而 to be dropped 应改为 to drop 。 OE/O: F:1j
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例 2 m>' s M1s
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在该句中， working hours were from sunrise to sunset, pay was awful, and working conditions being poor and dangerous 三个小分句为并列结构关系，因此必须保持成分和结构上的一致性，故应该将 being 改为 were 。 yw2^kk93|
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more a question of civilized behavior as good 1.__________ iV[ g.sP-
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“ more…than… ”是固定搭配用法，在此句中表示“与其…不如…”的意思，而不是“比…多”的意思；没有“ more…as… ”的搭配用法，故应该将 as 改为 than 。 yv
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练习题 =O1N*'e
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living in which to expect and preparing for the real world. 1.__________ `Lb^!6 `)
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itself behind patches of clouds but it seemed a rain was 3.__________ (? j $n?p
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5 That is worthy of note about these two groups is that 5.__________ ZS& >%G
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8 It is just on that day when I bumped into Miss Helen 8.__________ -KzU''
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9 It is in the cinema not on the street where he lost his 9.__________ o;#{N~4[$
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10 In the future passengers ships will be built to travel 8ad
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答案解析： mB(*)Pw Z
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1.preparing→prepare。属于平行结构中的动词错误。在并列连词and前后显然要有形式一致的动词，但前面没有与preparing呼应的现在分词（注：同行中的living是in which中which的先行词，故一定是名词，而不是现在分词——这是词形表面上的干扰），故只能改动preparing使之与前面的动词不定式expect一致，这里也有考生将preparing改为prepares，用意是与句中谓语动词allows一致，但要注意，句中不定式expect是及物动词，它的宾语是“the real world”，必须与prepare for共享。 QN(f8t(
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2.so后面加is。该句是一个并列句，第一个分词结构是完整的，主语由动名词“going to school”担当，第二个分词表语部分与前面相同。为避免重复，而使用代词so，但是谓语不能省略，必须加上is才是完整的结构。 AK<ZP ?0
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3.but→and。 T
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4.when→than。“no sooner…than…”和“hardly…when…”是固顶结构，相互之间不能交换使用。 <YL\E v/[
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5.that→what。该句结构比较复杂，前面整个句子作为主语，但是that不能作为主语从句的主语成分，因此改成what。 IJ, ,aCj4g
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6.less→fewer。 D .C m&
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7.many前加as。 >mF`XbS
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8.when→that。因为该句是一个强调句，所强调成分的代词除了在所强调成分为“人”时使用who或者that的情况外，一律使用that。 aDZLabRu
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9.where→that。 xC;$/u%'
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10.删除to。
