He said that someone might be spying on the station and the pilot was ordered tokeep track of the strange object．题目和参考答案——青夏教育精英家教网——

题目内容

19．He said that someone might be spying on the station and the pilot was ordered tokeep track of the strange object．

分析他说可能有人对基地进行侦察，飞行员奉命跟踪那个奇怪的物体．

解答 keep track of 考查动词短语．根据空前的不定式符合to可知，此处的动词短语中的动词应用原形．结合语境"可能有人对基地进行侦察"，所以飞行员应该是奉命"跟踪"那个奇怪的物体，keep track of意为"跟踪"，故填keep track of．

点评英语中的固定短语，既不能添词，也不能少词，是固定的，要求同学们在平时记忆准确，然后根据句意找出记忆中的固定搭配，做出正确的答案．

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