在英语中，表达“不应有”这个概念可以通过多种方式来完成，具体取决于你所要表达的具体情境和语气。以下是一些常用的表达方法：
1. Using “Should Not” or “Ought Not”
最直接的表达方式是使用“should not”或“ought not”，这两个短语都带有强烈的建议或命令的语气。
Should Not:
- We should not litter in public places.
- They should not have interrupted the meeting.
Ought Not:
- We ought not to eat too much sugar.
- You ought not to drive without a seatbelt.
2. Using “Must Not” or “Shouldn’t”
如果你想要表达的是绝对的禁止或强烈的反对，可以使用“must not”或“shouldn’t”。
Must Not:
- You must not enter the restricted area.
- Students must not use their phones during class.
Shouldn’t:
- You shouldn’t have told everyone about the surprise party.
- It’s not a good idea to shouldn’t swim in deep water without knowing how to.
3. Using “It Shouldn’t Be”
当表达某事不应该发生时，可以使用”It shouldn’t be…”的结构。
- It shouldn’t be this way.
- It shouldn’t be so difficult to get a ticket for the concert.
4. Using “There Should Not Be”
这个结构通常用来表达对现状的否定，或者指出某个不应存在的事物。
- There should not be any noise during the quiet hours.
- There should not be any discrimination in the workplace.
5. Using “No”
在某些情况下，简单的”No”就可以用来表达“不应有”的意思，尤其是在口语中。
- No smoking is allowed in this area.
- No children under 12 are allowed in the amusement park.
Example Sentences
- The manual clearly states that you should not remove the battery from the device while it is turned on.
- It is universally accepted that there should not be any form of violence against children.
- She thought it was absurd that there wasn’t a single library in the small town.
- They shouldn’t have been surprised by the bad weather; it was forecasted days in advance.
- We must not ignore the environmental impact of our actions; there should not be any plastic waste in our oceans.
通过上述方法，你可以根据不同的语境和需要表达的情感强度来选择合适的英语表达方式。记住，语境是关键，它决定了你如何更准确和有效地传达你的意思。