学生们必须在周五中午前提交作业。
The students are to submit their assignments by Friday noon.
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are英 /ɑː/|美 /ɑr/
to英 /tuː/|美 /tu/|英 /tə/|美 /tə/
submit英 /səbˈmɪt/|美 /səbˈmɪt/
解释
"are to" 将复数群体责任与截止时间联结，用于正式规定语境。
The students are to submit their assignments by Friday noon.
"are to" 将复数群体责任与截止时间联结，用于正式规定语境。