题目内容
4．I usuallyupdate（更新） the operating system of my computer once a week．分析 我经常一周更新一次我的电脑运行系统．
解答 答案是update．句意是"我经常一周更新一次我的电脑运行系统．"用动词update表示"更新"．句子陈述的是规律性的动作，所以用一般现在时态．主语I是第一人称，动词update用原形．故答案是update．
点评 本题考查翻译填空．首先要判断填写的单词及固定搭配，然后根据句意和相关语法填写正确的答案．
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