我本该为这次考试更努力学习的。
I ought to have studied harder for the exam.
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ought英 /ɔːt/|美 /ɔt/
to英 /tuː/|美 /tu/|英 /tə/|美 /tə/
解释
ought to have studied 表示过去应该更努力学习但实际没有，ought to 无时态变化，用 have + 过去分词标记过去。
I ought to have studied harder for the exam.
ought to have studied 表示过去应该更努力学习但实际没有，ought to 无时态变化，用 have + 过去分词标记过去。