Have you ever done something that felt familiar, even though you knew you hadn’t? This feeling is known as déjà vu, a French term meaning “already seen”.
It is said that most people have experienced déjà vu at least once in their lives. But why does it happen? People have studied this fascinating question for over a century, and there are now a number of interesting theories about déjà vu. Some people believe the familiar scenes of déjà vu must come from past dreams.And some suggest that déjà vu might show we have a hidden power to see the future. Others even think there could be a link between déjà vu and parallel universes.However, most scientists say that déjà vu is just a mix – up in the brain, making us feel something is familiar when it is actually not.
Generally speaking, if you experience déjà vu from time to time, there is no need to worry about it. However, if it happens often, you might have a health problem, and you should see a doctor.
Déjà vu, whether it is a trick of the mind or a window into the past or future, remains one of the many fascinating unsolved mysteries of human experience.
参考译文
你今天想要观看什么？
你是否曾做过某件事，感觉很熟悉，即便你明知自己没做过？这种感觉被称为 “既视感”（déjà vu ），是个法语词汇，意思是 “似曾见过” 。
据说大多数人一生中至少经历过一次既视感。但它为何会发生呢？人们研究这个有趣的问题已有一个多世纪，如今关于既视感有不少有趣的理论。一些人认为，既视感中熟悉的场景一定来自过往的梦境。还有人认为，既视感或许表明我们有一种预见未来的隐藏能力。另一些人甚至觉得，既视感和平行宇宙之间可能存在关联。然而，大多数科学家表示，既视感只是大脑的一种混淆，让我们在事物实际并不熟悉时，感觉它是熟悉的 。
一般来说，如果你时不时经历既视感，无需为此担忧。但如果它频繁发生，你可能存在健康问题，应该去看医生 。
既视感，不管它是思维的一种错觉，还是通往过去或未来的一扇窗口，仍是人类体验中众多引人入胜的未解之谜之一 。
Key Words
sth. be familiar to … 某物为······熟悉，强调事物被人熟知
sb. be familiar with… 某人对······熟悉，强调人主动了解某物
- The smell of fresh bread is familiar to everyone in the neighborhood.
- The story of Mulan is familiar to most Chinese children.
- He is familiar with computer programming, so he can solve the problem easily.
- The guide is familiar with the mountain paths, so we don’t need to worry about getting lost.
be known as… “被称为；被认为是·····”，强调 “身份 / 称号”
- Confucius is known as one of the greatest thinkers in Chinese history.
- This kind of tea is known as “green gold” in the local area.
- Hard work is known as the key to success.
be known for… 强调 “因…… 而闻名”（原因）
Einstein is known for his theory of relativity.
a link between … and … “······和······之间的联系”
- Understanding the link between diet and health helps people make better lifestyle choices.
- Scientists have found a link between air pollution and lung diseases.
- Many studies show a link between regular exercise and good mental health.
- Language is a link between different cultures.
make + 宾语 + 宾语补足语，表示“使······”，其中宾语补足语可以由形容词、名词、不带 to 的不定式（do）、过去分词（done）等充当。
- Hard work makes you strong.
- His talent and efforts made him a successful writer.
- The teacher made the students finish their homework on time.
- The storm made the bridge destroyed.
- They made the old house into a library.
*常见搭配：make sb. happy（使某人开心）、make sth. clear（使某事清楚）、make sb. do sth.（使某人做某事）、make oneself understood（使自己被理
Generally speaking，意为“一般来说”，通常置于句首，用于对某类事物或现象进行概括性总结，语气较为客观。
- Generally speaking, reading regularly can improve your vocabulary.
- Generally speaking, plants need sunlight and water to grow.
- Generally speaking, people in this city are friendly to strangers.
Key Structures
there is no need (for sb.) to do sth. 表示“（某人）没必要做某事”。用于劝诫或说明某行为没有必要，语气委婉。
- There is no need for the children to worry about the exam results.
- There is absolutely no need to argue about such a small thing.
【同义表达】It’s not necessary (for sb.) to do sth.
It’s not necessary for you to come early.