Please double-click on the English subtitles below to play the video.
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Hi, everybody. I'm Sam, and in this lesson
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I'm going to talk about 'need'. Do you know
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the difference between 'needn't' and 'not need to'?
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Look at these two sentences in the present - is the
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meaning the same or different?
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'You don't need to worry about the exam,
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you've studied lots.'
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'You needn't worry about the exam,
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you've studied lots.'
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They're the same right? Maybe 'needn't'
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is a little bit more formal, but the meaning
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is that there is 'no necessity for you to worry'.
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Now look at these two sentences in the past:
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'He didn't need to worry about the exam.
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He had already passed the course.'
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'He needn't have worried about the exam.
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It was really easy.'
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These are different! In the first sentence,
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he had already passed the course, so he knew
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he 'didn’t need to' worry.
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In the second sentence, he didn't know the
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exam was going to be easy, so he was worried,
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but he 'needn't have been'.
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