题目内容
20.Terrible accidents happenconstantly (constant) in this area.分析 这个地区可怕的事故频繁发生.
解答 答案是constantly.本题考查词性转换;constant形容词,频繁的;句中需要的修饰动词happen的副词,故答案是constantly.
点评 本题是要求用所给词的适当形式填空,解题时首先考虑句中需要的词性;其次,如果是谓语动词关注时态、语态和数的变化;如果是非谓语动词要联系非谓语的基本用法判断非谓语的形式;如果是名词关注单复数.
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