托福新学期备考之：阅读长难句把握

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句子结构复杂是托福阅读的障碍之一。面对难句，必须*把握其主干和重点，因为考试时涉及答案的主要是句子的主干和重点。要把握难句的主干和重点，首先要弄清它们的类型。简而言之，托福中的难句主要包括下列类型： 句子结构复杂是托福阅读的障碍之一。面对难句，必须*把握其主干和重点，因为考试时涉及答案的主要是句子的主干和重点。要把握难句的主干和重点，首先要弄清它们的类型。简而言之，托福中的难句主要包括下列类型：1. 定语（包含后置定语与定语从句）；2. 同位语；3. 并列结构；4. that引导的各种从句；5. 插入结构；6. 独立主格；7. 倒装句；8. 强调句；9. 虚拟语气对于不同类型的难句，把握主干的方法也不一样。以倒装句为例，主要有下列情况：1. 方位副词放在句首Herein lay the beginning of what ultimately turned from ignorance to denial of the value of nutritional therapies in medicine.2. 介词放在句首Among the species of seabirds that use the windswept cliffs of the Atlantic coast of Canada in the summer to mate, lay eggs, and rear their young are common murres, Atlantic puffins, black-legged kittiwakes, and northern gannets.3. 形容词放在句首Implicit in it is an aesthetic principle as well: that the medium has certain qualities of beauty and expressiveness with which sculptors must bring own aesthetic sensibilities into harmony.4. 过去分词放在句首Accustomed though we are to speaking of the films made before 1927 as “silent”, the film has never been, in the full sense of the word, silent.5. 现在分词放在句首Missing until recently were fossils clearly intermediate, or transitional, between land mammals and cetaceans.句子倒装的目的主要有两个：l首先是被提前的部分被强调，如上述的第四句：Accustomed though we are to speaking of the films made before 1927 as “silent”, 其中的accustomed按照正常语序应该放在are之后：Though we are accustomed to speaking of the films made before 1927 as “silent”. 之所以将accustomed提前，是为了强调它。l其次是为了句子的平衡，否则将导致头重脚轻的效果，如上述的句、第三句和第五句。以第五句为例，按照正常语序应该是：Fossils clearly intermediate, or transitional, between land mammals and cetaceans were missing until recently. 但是这种句子结构比较糟糕，因为主语及其修饰语过长（从句首直到cetaceans），而谓语部分were missing until recently较短，容易造成头重脚轻的效果。第五句将missing提前，避免了这一现象。为了考试时能*把握句子的主干，需要较多的阅读和分析。易伯华海外考试研究中心建议考生们把托福考试中已经出现过的经典难句进行分类，弄懂它们的结构和意思，反复分析，考试时就能做到驾轻就熟了。