英:/''ʃʊdnt/ 美:/''ʃudnt/
不应该，不应（等于should not）
You shouldn't do that.
你不该那么做
You shouldn't knock the food. After all, it's free!
你不应该批评这个食物。毕竟，这是免费的！
Life is full of challenges. Being happy shouldn't be one of them.
生活充满挑战。快乐不应是挑战。
You shouldn't put off until tomorrow the things that you can do today.
今天该做完的事不能拖到明天。
We shouldn't be surprised to hear these big bosses have mistresses on the side.
这些大佬有情妇的消息不足为奇。
You really shouldn't mess around with fire. Someone could get hurt!
你真的不应该乱玩火。有人会受伤的！
Clothes shouldn't define a person. Actions should define people.
衣服不能定义一个人，行为才能定义人。
You shouldn't get angry with your daughter. Extreme fluctuations in mood are normal for teenagers.
你别跟你女儿生气。青少年情绪极度波动是正常的。
I don't agree with the regulations governing income taxes. People shouldn't have to give away their hard-earned money.
我不赞同个人所得税的管理办法。人们不应该把辛苦所得的钱散出去。
I had some pretty restless sleep last night. I knew I shouldn't have drank that coffee in the afternoon!
昨晚我睡得非常不安稳，我就知道下午我不该喝咖啡的。
As long as we leave before 3:00 traffic shouldn't be a problem.
只要我们在3:00前离开，应该不至于堵车。
You really shouldn't be playing on your phone during company meetings.
你真的不应该在开公司会议的时候玩手机。
Kids nowadays shouldn't even have a smartphone in the first place.
今天的孩子本来就不该拿手机。
You shouldn't drink and drive.
你不该酒后驾车。
You shouldn't drive so fast.
你不应该把车开得这么快。
Oops, I shouldn't have said that.
哎哟，我不应该说那些。
You shouldn't exercise on a full stomach.
你不应该吃饱了就运动。
They shouldn't be striking for more money.
他们不该为更多的钱而罢工。
“shouldn't”的详细解释
“shouldn't”是英语中“should not”的缩写形式，属于情态动词的否定结构，主要用于表达建议、义务或推测的否定含义。其核心含义为“不应该”“不应当”或“不太可能”。以下是具体分析：
基本定义与用法
“shouldn't”表示在特定情境下不适宜、不被允许或不符合预期的行为。例如：
You shouldn't touch the hot stove.（你不应该碰热炉子。）
此处强调对危险行为的劝阻。
牛津词典指出，“shouldn't”常用于口语和书面语中，语气比“must not”更委婉，但比“don't have to”更具建议性（来源：Oxford Learner's Dictionaries）。
语法结构与语境
He shouldn't eat junk food every day.（他不该每天吃垃圾食品。）
It shouldn't rain tomorrow according to the forecast.（根据预报，明天不太可能下雨。）
If I were you, I shouldn't ignore the warning.（如果我是你，我不会忽视这个警告。）
常见错误与辨析
“shouldn't”强调义务或合理性，而“wouldn't”侧重于意愿或习惯性拒绝。
错误：He shouldn't answer the phone.（应修正为“wouldn't”表示“他不愿接电话”。）
剑桥英语语法指南提到，正式写作中需避免过度使用缩写形式，应优先使用“should not”（来源：Cambridge Dictionary）。
权威例句参考
"You shouldn't drive so fast," she said nervously.（“你不该开这么快。”她紧张地说。）
The instructions say we shouldn't mix these chemicals.（说明书指出我们不应混合这些化学品。）
通过以上分析可见，“shouldn't”在英语中承担多重功能，需结合语境准确理解其否定含义。
音标：
全称：should not
词性：情态动词否定式（Modal Verb Negative），由情态动词should 和否定词not 缩合而成。
基本定义：
Youshouldn't eat expired food.（你不该吃过期食品。）
Heshouldn't be careless next time.（他下次不该粗心。）
语法规则：
Sheshouldn't open the windows.（她不该开窗。）
Should Linda wash the shoes? – No, sheshouldn't.
使用场景：
Youshouldn't work all day without moving.（你不该整天坐着不动。）
Studentsshouldn't use phones in class.（学生不该在课堂上用手机。）
The trainshouldn't be delayed.（火车按理不该晚点。）
语气强度：
Youmustn't smoke here.（禁止吸烟） vs. Youshouldn't eat junk food.（建议少吃垃圾食品）
委婉表达：
原句：Youshouldn’t leave your stuff here.
替换：Let’s not leave our stuff here.
虚拟语气与过去时态：
Ishouldn’t have said that.（我不该说那些话。）
shouldn't vs. oughtn't to：
Youshouldn’t lie.（你不该撒谎。）→ 主观建议
Yououghtn’t to break the law.（你不该违法。）→ 强调责任
shouldn't vs. don't have to：
Youshouldn’t skip breakfast.（不该不吃早餐） vs. Youdon’t have to pay now.（不必现在付款）
shouldn't 是英语中表达否定建议、义务或逻辑判断的核心情态动词，需注意其与mustn't、oughtn’t to 等词的语气差异，并在实际使用中根据语境调整表达方式以避免生硬。通过例句练习和场景模拟，可有效掌握其灵活用法。
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