1
should + base verb
表示建议或轻微义务。
You should study harder.
你应该更努力学习。
应该；应当；可能会
先理解核心含义，再看它在真实句子里的用法。
应该；应当；可能会
used for advice, mild obligation, or an expected result
You should study harder.
你应该更努力学习。
可表示建议或责任，也可表示按预期应该发生的事。
应该；应当；可能会
used for advice, mild obligation, or an expected result
should
Base
原形
should
3rd person
第三人称单数
should
Past
过去式
情态动词 should 没有 -ing 形式或过去分词，也不使用普通的第三人称单数 -s 变化。
You should get some rest tonight.
你今晚应该休息一下。
The bus should arrive in ten minutes.
公交车应该会在十分钟后到达。
We should keep our promises.
我们应该信守承诺。
表示建议或轻微义务。
You should study harder.
你应该更努力学习。
表示预期或被动义务。
The package should be delivered today.
包裹今天应该送达。
表示过去未完成的义务或遗憾。
You should have called me.
你本应该给我打电话的。
Not this
You should to study hard.
Use this
You should study hard.
should 是情态动词，后直接接动词原形，不能接 to。
Not this
I should go to the meeting yesterday.
Use this
I should have gone to the meeting yesterday.
表示过去本应做而没做，需要用 should have + 过去分词。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
应该是；应当在
The package should be here by tomorrow.
包裹明天应该到了。
本应该（过去未做）
You should have told me earlier.
你本应该早点告诉我的。
不应该
Children should not play with matches.
小孩子不应该玩火柴。
应该做
What should I do now?
我现在应该做什么？
应该知道
He should know the answer.
他应该知道答案。
应该去
I think we should go now.
我想我们现在应该走了。
本应更明智/本应知道不该做
You should have known better than to trust him.
你本应更明智，不该相信他。
本以为/原以为
I should have thought he would have called by now.
我本以为他现在已经打电话了。
本应预料到
With all the signs, I should have seen it coming.
有那么多迹象，我本应预料到的。
我该留下还是该走？
Should I stay or should I go?
我该留下还是该走？
老朋友应该被遗忘吗？
Should old acquaintance be forgot
老朋友应该被遗忘吗？
Use should naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
想象你耸肩说'Sh'（嘘），然后'ould'像'ould能'，表示'应该能'但不确定，对比'must'更弱。
neutral; contexts: advice, obligation; note: 用于表达义务或建议，语气委婉，常用于日常和正式场合。
should 后接不带 to 的动词原形；语气通常比 must 弱，更常表示建议或合理预期。
Dictionary facts from AI_FALLBACK, BRIDGEDICT_CURATED_MODAL, CEFR_J, DICTIONARY_API_DEV.