英語考試多多少少總是會遇到幾個生單詞，那么怎樣根據(jù)上下文句子來猜詞呢?
    托福閱讀揣摩生詞法一、利用上下文線索猜測詞義
    1、根據(jù)同義、反義關系猜詞
    Today‘ s teenagers seem to be more liberal in their ideas than their _______ grandparents.
    A. freethinking B. traditional C. old D. happy
    traditional與liberal意思相反，故選B。
    2、根據(jù)句意或段落文章的上、下文猜測詞義
    Klebold and Harris felt _______ and wanted to revenge against those who disliked playing
    together with them or laughed at them.
    A. discouraged B. ashamed C. tired D. separated
    根據(jù)下文的disliked playing together with them判斷此處應為“感到孤立”，故選D。
    專家解讀托福閱讀揣摩生詞法二、利用構詞法猜測詞義(利用前、后綴及合成詞猜詞義)
    1、用前、后綴猜測詞義
    英語中的前綴、后綴構詞頗多，且特定的綴往往表示特定的含義，把握住這一點，可起到以不變應萬變的效果。
    1)He had been overworking and fell ill at last.
    overwork是由前綴over-加動詞構成，over有“超過、過于”之意，overwork意思是“工作過多，勞累過度”。再如，overburden負擔過重，overcharge要價過高，overdo做得過分。英語中常用的
    前綴還有：
    mis-錯，誤：misfortune不幸;mislead誤導;mismanage處理不當
    mid-中央：midnight半夜;midway半路
    under-低于：underdone半生不熟的;underestimate低估
    anti-反對：antibody抗體;anticyclone反氣旋;antifreeze防凍劑
    下面劃線單詞為常見后綴派生詞：
    1)You must stop dreaming and face reality.(-ty為名詞的標志)
    2)The country is trying to popularize education. (-ize為及物動詞的標志，再如realize， modernize)
    2、利用合成詞猜測詞義。
    Family members take turns choosing a special activity for the evening， and everyone partakes in for fun.
    根據(jù)短語構成及上下文意思看，此處partakes in相當于takes part in。再如break out-outbreak(名詞爆發(fā))，set out-outset(名詞起始)，come in-income(名詞收入) 。