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This experiment ought to______last week.
This experiment ought to______last week.
admin
2017-12-04
17
问题
This experiment ought to______last week.
选项
A、be done
B、have been done
C、have done
D、do
答案
B
解析
考查ought to的用法。根据时间状语last week可知,此处是在谈论过去的情况。“ought to+have+过去分词”表示过去应做某事而实际未做。此处应该是实验“被做”,所以用have been done。句意为“这个实验本应在上周做(实际上未做)”。“ought to+动词原形”用于谈论现在或将来的情况。
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中学英语题库教师公开招聘分类
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中学英语
教师公开招聘
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