很多同學都覺得托福閱讀考試中推斷題的難度是比較高的，中國考生在推斷題部分的正確率與得分也普遍比較低。那么如何才能?托福閱讀中難點題型的推斷題呢？下面小編就結合實例分析一下因果關系詞在托福閱讀中的運用技巧，一起來看。
托福閱讀因果關系詞介紹
托福閱讀中的因果關系詞其實有兩類，一個是表示原因的：as、since、thanks to、as result of、because of、owing to、result from、due to、on account of、by virtue of、in that、attribute to;另一個是表示結果的：as a consequence、thus、hence、so、as a result、result in、contribute to、lead to、cause、breed、trigger.
托福閱讀推斷題如何用因果關系來解題？
Paragraph 4: So, in another set of experiments, Kramer putidentical food boxes around the cage, with food in only one of the boxes. Theboxes were stationary, and the one containing food was always at the same pointof the compass. However, its position with respect to the surroundings could bechanged by revolving either the inner cage containing the birds or the outerwalls, which served as the background. As long as the birds could see the Sun,no matter how their surroundings were altered, they went directly to thecorrect food box. Whether the box appeared in front of the right wall or theleft wall, they showed no signs of confusion. On overcast days, however, thebirds were disoriented and had trouble locating their food box.
Which of the following can be inferred from paragraph 4 aboutKramer’s reason for filling one food box and leaving the rest empty?
A He believed the birds would eat food from only one box.
B He wanted to see whether the Sun alone controlled the birds'ability to navigate toward the box with food.
C He thought that if all the boxes contained food, this woulddistract the birds from following their migratory route.
D He needed to test whether the birds preferred having the food atany particular point of the compass.
首先，我們來明確一下推斷的定義(infer, imply, indicate)，縱使它是推斷題，也不是意味著這題是主觀臆斷，臆想或是聯想得出的。這道題也是要通過提取題干中的關鍵詞到文章中的明確位置，然后文中沒有平鋪直敘地告訴你答案，需要我們根據一些線索找到答案。
接下來我們來看一下這道題，題干中出現Kramer, filling one food box andleaving the rest empty定位在第四段第一句：with food in only one of the boxes，而解開這道題的重點就在于：reason。我們看到第一句話一開始說到，so, in another set of experiments，很明顯，答案并不在這一段，而是上一段的最后。所以答案是B。
以上就是托福閱讀中推斷題用因果關系來解題的具體方法，希望大家能夠通過本文內容學到高效解題技巧提升自身的實戰能力。
