托福閱讀難除了有較大的詞匯量之外，復雜的句子結構也是其難點之一，今天小馬小編就為大家整理了托福閱讀考試中的絆腳石，希望能對大家的復習有所幫助。
要把握托福閱讀的難句的主干和重點，首先要弄清它們的類型。托福閱讀中的難句主要有定語從句、同位語、并列結構、倒裝句等等，對于不同類型的難句，把握主干的方法也不一樣。下面以倒裝句為例，為大家介紹一些把握倒裝句的方法。
托福閱讀中的倒裝句主要有下列情況：
1.方位副詞放在句首
Herein lay the beginning of what ultimately turned from ignorance to denial of the value of nutritional therapies in medicine。
2.介詞放在句首
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. 形容詞放在句首
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.過去分詞放在句首
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.現在分詞放在句首
Missing until recently were fossils clearly intermediate， or transitional， between land mammals and cetaceans。
托福閱讀中為了考試時能迅速把握句子的主干，大家備考時需要進行更多的閱讀和分析，每種托福閱讀難句類型都有一定的練習，在不斷的練習中自己總結不同類型考題的答題技巧。