新东方网>BBC>BBC英语教学>视频英语>一分钟英语>正文

Not need to 和 needn’t 区别是什么?

2021-10-24 20:30

来源:BBC

作者:

一分钟英语

Not need to 和 needn’t 区别是什么?

内容简介

动词 “need” 的意思是 “需要,必须”。它的否定形式有两种:“not need to” 和 “needn’t”。它们有区别吗?现在时态和过去时态下的这两个否定形式在用法上一样吗?看视频讲解。

文字稿

Hi, everybody. I’m Sam, and in this lesson I’m going to talk about ‘need’. Do you know the difference between needn’t and not need to?

Look at these two sentences in the present – is the meaning the same or different?

You don’t need to worry about the exam, you’ve studied lots.
You needn’t worry about the exam, you’ve studied lots.

They’re the same, right? Maybe needn’t is a little bit more formal, but the meaning is that there is no necessity for you to worry.

Now look at these two sentences in the past:

He didn’t need to worry about the exam. He had already passed the course.
He needn’t have worried about the exam. It was really easy.

These are different! In the first sentence, he had already passed the course, so he knew he didn’t need to worry. In the second sentence, he didn’t know the exam was going to be easy, so he was worried but he needn’t have been.

用法总结

1. 在现在时态下,“(do) not need to” 和 “needn’t” 表达的意思通常是一样的,即 “不需要,用不着”。“Needn’t” 比 “not need to” 稍微更正式一点。

  • You don’t need to worry about the exam, you’ve studied lots. 
  • You needn’t worry about the exam, you’ve studied lots.
  • I don’t need to go to work tomorrow as it’s a holiday.
  • I needn’t go to work tomorrow as it’s a holiday.

2. 在过去时态下,“(did) not need to” 常用来表达我们之前没有做某事,因为 “不需要”。

  • He didn’t need to worry about the exam. He had already passed the course.
  • I didn’t need to go to work today, so I stayed in bed.

3. 在过去时态下,“needn’t + have + 动词过去分词” 常用来表达我们之前做了某事,但其实 “本不必” 做。

  • He needn’t have worried about the exam. It was really easy.
  • I needn’t have gone to work today. I didn’t realise it was a holiday. What a mistake!

资料下载

  • 七年级上、下册英语词汇

    3342次下载 点击下载
  • 八年级上、下册英语词汇

    2621次下载 点击下载
  • 九年级全册英语单词表

    4734次下载 点击下载
  • 中考英语1600个词汇手册

    1854次下载 点击下载
  • 高考英语词汇必备3500

    1391次下载 点击下载
  • 新概念英语1-4册全套教材

    1391次下载 点击下载
名称名称
300次下载

微信扫码关注"新东方网"服务号

回复""立刻获取!

猜你喜欢

  • 听力
  • 口语
  • 阅读
  • 娱乐
  • 词汇
  • 写作

            新东方英语辅导专区

            班级名称 上课地点 上课时间 费用 详细

            焦点推荐

            版权及免责声明

            凡本网注明"稿件来源:新东方"的所有文字、图片和音视频稿件,版权均属新东方教育科技集团(含本网和新东方网) 所有,任何媒体、网站或个人未经本网协议授权不得转载、链接、转贴或以其他任何方式复制、发表。已经本网协议授权的媒体、网站,在下载使用时必须注明"稿件来源:新东方",违者本网将依法追究法律责任。

            本网未注明"稿件来源:新东方"的文/图等稿件均为转载稿,本网转载仅基于传递更多信息之目的,并不意味着赞同转载稿的观点或证实其内容的真实性。如其他媒体、网站或个人从本网下载使用,必须保留本网注明的"稿件来源",并自负版权等法律责任。如擅自篡改为"稿件来源:新东方",本网将依法追究法律责任。

            如本网转载稿涉及版权等问题,请作者见稿后在两周内速来电与新东方网联系,电话:010-60908555。