拇指英语说，分享英语学习心得，技巧和方法。让英语学习变得更有趣，更简单。

在英语学习中，词汇量的大小是衡量英语水平的重要标志。通常词汇量越大，运用英语的能力就越强，反之亦然。许多英语偏弱的学生将词汇的学习与记忆比作“拦路虎”，以至谈虎色变，毫无信心。因此，有意识地学习词汇策略将可以帮助学生更科学，高效，简单地积累大量词汇，从而达到事半功倍的效果。本词汇积累策略系列，将会从近义词(synonyms)，反义词(antonyms)，前缀(prefixes)，后缀(suffixes)，同音异义词(homophones)等角度来探讨词汇的学习和积累。本系列，适合小学中高年级及初中学生学习。

The Root Words: nat/viv/bio/gen 词根： nat/viv/bio/gen

词根nat 有生命，出生的含义。词根viv(也可以写成vit)同样表示生命的含义。英语中，另外二个表示“生命”的词根为"bio"和"gen"。这些词根都分别可以和不同的前缀，后缀构成许多新的英语单词。

首先我们来学习下面方框中的单词，大家知道它们的意思吗？请运用你现有的知识把下面的这些单词和英语解释进行配对。

解析：

接下来，我们试着使用上面学过的单词来完成下面的篇目。请注意填入单词的正确形式。

News in Brief

Water supplies were shut off in a small coastal town yesterday after an environment scare.

It seems that a chemical powder which was thought to be 1). ____________ was buried in soil near the source of the town's water supply. Instead of breaking down into harmless particles, the powder leaked into the water supply and contaminated it. Scientists have warned everyone in the neighbourhood not to drink any tap water, especially pregnant women, as the side effects of drinking water containing the chemical can include stomach problems, skin complaints and, if consumed by pregnant women, 2). _____________ birth defects. On a lighter ntoe, a woman of Irish 3). __________ claims bo have researched her family name and 4). ____________ through 5). ______________ methods. The woman is reported to have contacted her deceased father, grandfather, great grandfather, and great-great grandfather by using her psychic powers. In a recent interview, she told us she had made discoveries about her family history, and about characteristics of the male family members she contacted, too. She revealed that while her great-great grandfather was a very kind, 6). _______________ man who loved to entertain, her great grandfather was the opposite-- a complete introvert. And although her grandfather was an energetic, 7). ____________ man, her father was renowned for being sickly and miserable. The woman concluded that this family characteristic explained her own son's great 8). _____________ and spirited nature--a trait he inherited from his grandfather.

Keys:

biodegradable;congenital;nationality;genealogy;supernatural;convivial;vivacious;vitality

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