My mother (enjoy) ______ a better health since we came to live in this beautiful seaside city.

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问题 My mother (enjoy) ______ a better health since we came to live in this beautiful seaside city.

选项

答案has been enjoying

解析 时态。本句使用了现在完成进行时,表示动作开始于过去并一直在继续进行,结构为have/has been v-ing。句中给出since引导的表示过去时间点的从句,主句动作enjoy开始于从句动作“到海滨城市生活”之后,一直持续进行到现在,并继续下去。所以,空格处填has been enjoying。现在完成进行时,句中常有用for或since引导的表示一段时间的状语或从句。有时也包括现在时间在内的表示一段时间的状语。如all day,the whole morning等。【例句】:(1)The boys have been watching television since seven o’clock.(孩子们从七点起就一直在看电视。)    (2)I have been reading this book for two weeks but I have not finished it yet.(这本书我看了两周,但还没看完。)
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