环球教育（原环球教育）提示，托福阅读长难句大概分三类，不同类型的句子对应不同的解题方法。因此，了解长难句的类型，对症下药尤为重要。

　　把句子的主干先抓出来，然后结合这些修饰成分有层次的理解句子。而抓住句子的核心主干的窍门往往在于找出句子的真正谓语，因为谓语是支撑整个句子的支点。

　　1.In many instances,spectators in the era before recorded sound experienced elaborate auralpresentations alongside movies' visual images, from the Japanese benshi(narrators) crafting multivoiced dialogue narratives to original musicalcompositions performed by symphony-size orchestras in Europe and the UnitedStates.

　　托福阅读难句类型：复杂修饰成分

　　本句主干结构是spectatorsexperienced elaborate aural presentations alongside movies' visual images，其实非常简单，就是说观众们既看到影像也欣赏到了音效。但是从句子一开头的状语In many instances开始，作者用in the era beforerecorded sound 修饰主语spectators，割裂了谓语 experienced和主语之间的关系，然后宾语是 elaborate auralpresentations alongside movies' visual images倒不难，但是随后用一个 from the Japanese benshi (narrators) crafting multivoiced dialoguenarratives to original musical compositions performed by symphony-sizeorchestras in Europe and the United States.来解释这个主干成分的句子。就使句子变得很复杂了。

　　译文：

　　很多时候，在有声时代之前，观众们在观看影像的同时也欣赏到了精心制作的音效，从日本多人对话式叙事到欧美交响乐团的原声乐，无不体现这一点。

　　训练：

　　In many instances,spectators in the era before recorded sound experienced elaborate auralpresentations alongside movies' visual images, from the Japanese benshi(narrators) crafting multivoiced dialogue narratives to original musicalcompositions performed by symphony-size orchestras in Europe and the UnitedStates.

　　2.Though it may bedifficult to imagine from a later perspective, a strain of critical opinion inthe 1920 s predicted that sound film would be a technical novelty that wouldsoon fade from sight, just as had many previous attempts, dating well backbefore the First World War, to link images with recorded sound.

　　托福阅读难句类型：层层追加的复杂修饰+插入成分

　　本句也是ETS的老套路了，为了把句子变长，就层层追加修饰成分，先又Though it may be difficult to imagine from a later perspective所谓一个转折的分句，然后主句是a strain of critical opinion in the 1920 s predicted that sound filmwould be a technical novelty ，接着用that引导 would soon fade from sight, just as had many previous attempts,dating well back before the First World War, to link images with recorded sound的长句嵌套插入成分，来修饰novelty,但是实际上这些都不是什么重要的成分，大家只要读出来主句结构和句子的核心意思就是以前有一种预言认为有声电影很快就会消失就行了。

　　译文：

　　尽管后来人很难理解，但在20世纪20年代，一种批判性的意见预言：有声电影是一种将很快淡出公众视线的科技新事物，就像的许多先前把图像和声音结合起来的尝试，这些尝试可以追溯到第一次世界大战。

　　训练：

　　Though it may be difficultto imagine from a later perspective, a strain of critical opinion in the 1920 spredicted that sound film would be a technical novelty that would soon fadefrom sight, just as had many previous attempts, dating well back before theFirst World War, to link images with recorded sound.

　　3.Indeed, stability of thebiological clock's period is one of its major features, even when theorganism's environment is subjected to considerable changes in factors, such astemperature, that would be expected to affect biological activity strongly.

　　托福阅读难句类型：复杂修饰+插入成分

　　本句的主句结构其实特别简单就是 stabilityis one of its major features, even when 引导的状语从句theorganism's environment is subjected to considerable changes in factors,然后用 such as引导了列举temperature,之后再用 that引导从句来说明temperature would be expected toaffect biological activity strongly.

　　译文：

　　事实上，即使有机体受到外界因素，如温度，强烈改变的影响，有机体内生物钟的稳定性是影响生物活动的一个主要因素。

　　训练：

　　Indeed, stability of thebiological clock's period is one of its major features, even when theorganism's environment is subjected to considerable changes in factors, such astemperature, that would be expected to affect biological activity strongly.