都說托福閱讀部分文章有難度，其實這種難度很多時候來自于文章中的長難句。這些句子結構復雜內容繁多，考生如果無法快速正確地看懂它們必然會影響對文章的理解和解題效率。所以下面小編就為大家帶來托福閱讀100個長難句的精選匯總和深度解析，為大家提供學習指點和啟發。

托福閱讀100個長難句實例分析

原句案例：

Successin colonization depends to a great extent on there being a site available for colonization ---- a safe site where disturbance by fire or by cutting down of trees has either removed competing species or reduced levels of competition and other negative interactions to a level at which the invading species can become established.

結構劃分：

Success in colonization depends to a great extent on there being a site available for colonization ---- (a safe site) (where disturbance by fire or by cutting down of trees has either removed competing species or reduced levels of competition and other negative interactions to a level) (at which the invading species can become established.)

深度分析：

這個句子的主干就是：

Success in colonization depends (to a great extent) on there being a site (available for colonization)

注意depend on被短語to a great extent(很大程度)隔開了，斷句不要出現問題，后面還有一個放在后面的形容詞短語(available for colonization)修飾a site

修飾一：(a safe site) ，同位語，解說說明前面的a site

中文：一個安全的地點

修飾二：(where disturbance by fire or bycutting down of trees has either removed competing species or reduced levels of competition and other negative interactions to a level) ，從句

這個從句有點復雜：

where disturbance (by fire or by cutting down of trees) has either removed competing species or reduced levels of competition and other negative interactions to a level

(by fire or by cutting down oftrees)，介詞修飾放在后面disturbance

注意這里有一個并列結構，either or

either removed competing species

or reduced levels of competition and other negative interactions to a level

中文：在那里由于焚燒或伐木要么移除了競爭物種，要么減低了競爭水平和其它負面的物種間相互影響的水平

修飾三：(at which the invading species can become established.) ，從句

中文：入侵物種能夠定居下來。

參考翻譯：

成功的移居很大程度上依賴于有一個可用的移居的地點，即一個安全的地點，在那里由于焚燒或伐木要么移除了競爭物種，要么把物種間的競爭和其他負面的物種間相互影響減少到讓入侵物種能夠定居下來。

托福閱讀中的長難句雖然會對考生造成一定的干擾，但只要考生具備了快速看懂理解它們的能力，其實長難句也并非難以應對，希望本文內容能夠幫助大家提升閱讀實力拿到高分好成績。