动词
中文翻译：Unknown
同义词：
['should', 'ought to', 'be supposed to']
例句：
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1. 当……时；2. 应当；3. 适合；4. 在
某个时间点
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1. When the sun sets, it's time to go home.
太阳落山时，该回家了。
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2. He should have finished his homework by now.
他现在应该已经完成了作业。
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3. She ought to have arrived at the airport two hours earlier.
她本应该在两小时前到达机场的。
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4. It's supposed to rain tomorrow.
明天应该会下雨。