他本应发送报告，但完全忘了这回事。
He was supposed to send the report, but he forgot about it.
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was英 /wɒz/|美 /wɑz/
supposed英 /səˈpəʊzd/|美 /səˈpoʊzd/
to英 /tuː/|美 /tu/|英 /tə/|美 /tə/
解释
was supposed to + 动词原形，表示过去的义务或预期动作。was 是单数过去式，supposed to 后接动作原形，but 从句说明动作未被执行。
He was supposed to send the report, but he forgot about it.
was supposed to + 动词原形，表示过去的义务或预期动作。was 是单数过去式，supposed to 后接动作原形，but 从句说明动作未被执行。