•The children are supposed to be at school by 8.45 a.m.孩子们应该在早上8：45之前到校。

•What are you doing out of bed - you're supposed to be asleep.你不睡觉起来干甚么——你早该睡着了。

•You're not supposed (= allowed) to park here.你不能把车停在这里。

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•These batteries are supposed to last for a year.这些电池应该能用一年。

•We were supposed to have gone away this week, but Debbie's ill so we couldn't go.这周我们本该要走，但是戴比病了，所以我们走不了。

•How am I supposed to (= How can I) find that much money by the end of the week?我怎么可能在周末之前筹到那么多钱呢?

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•a supposed genius所谓的天才

•The costs of the scheme outweigh its supposed benefits.这个方案的成本超出了它可能会带来的收益。