专题技能突破(46) 词汇之派生【技能讲解】　有人说：“得单词者得天下。”在英语学习中对于单词的学习尤为重要。首先，掌握单词的第一个层面是认识单词的含义。构词法的学习将帮助知道更多单词的含义，有效的扩大词汇量。,英语的构词法主要有：派生法、合成法和转化法。派生法——词根加前缀或后缀构成一个新词的方法。典例剖析(5)变动词

　　adj.前＋en或后＋en(或n)

　　(6)变否定

　　技能演练The virus can move to and affect every part of the body causing direct damage to organs as well as internal bleeding and cause multi­system organ ________ (fail)．

　　答案：failure

　　2．I was ________ (deep) touched that words I wrote to help make sense of my dark days could lighten the dark days of someone across the world.

　　答案：deeply

　　3．Do not carry too much money or ________ (necessary) credit cards.

　　答案：unnecessary

　　4．If what I was about to say was wrong, the ________ (possible) of our team winning would be destroyed ________ (complete)．

　　答案：possibility; completely

　　5．I was supposed to arrive at the airport on time. ________ (fortunate), I was held up by the heavy traffic jam.

　　答案：Unfortunately

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