Unit 3 The world onlineWelcome to the unit就各种话题搜索信息。
search verb1) [I or T] to look somewhere carefully in order to find sth.:The police searched the woods for the missing boy.She searched his face for some sign of forgiveness, but it remained expressionless.2) [I] to try to find the answer to a problem:Philosophers have searched for millennia but they haven't found the meaning of life.3) [T] A police officer who searches you or your possessions looks for sth. you might be hiding: The men were searched for drugs and then released.a variety of variety noun1) [C] a different type of sth.:The article was about the different varieties of Spanish spoken in South America.This variety of rose is especially hardy and drought-resistant.Our supermarket stocks apples in several different varieties.2) [S] many different types of things or people:She does a variety of fitness activities.The equipment could be used for a variety of educational purposes.Manufacturers need large sales to justify offering a big variety in export markets.2.Keep in touch with family members wherever you are in the world. (P33)无论你在世界的任何地方读可以与家人保持联系。
wherever1) adv., conj.to or in any or every place:We can go wherever you like.Wherever I go I always seem to bump into him.All across Europe, wherever you look, marriage is in decline and divorce rates are soaring.2) adverbused instead of 'where' to add emphasis to a phrase, usually expressing surprise:Wherever did you find that hat!Wherever did you get that idea!Wherever does he get the money from to go on all these exotic journeys?Readingare about different effects of the Internet on our lives.2. Two.3. Uncontrolled information and the change in✓The Internet is a great help to people who are in need of various information.✓People use the Internet to build social ties.✓The amount of false information on the Internet becomes more of a problemevery day.✓Spending too much time building relationships on the Internet can damagepeople’s abilities to live normal lives.也就是说，我相信因特网对我们的生活产生正面的影响。
effect1) the result of a particular influence: n. [C or U]The radiation leak has had a disastrous effect on/upon the environment.I tried taking tablets for the headache but they didn't have any effect.2) use: noun [U]The present system of payment will remain in effect (= be used) until the end of the rental agreement.When do the new driving laws come into effect?2.The first is its value for people who are looking for information. (P34)第一是因特网对于搜索信息的人具有的价值。
valuen. 1) [S or U] the importance or worth of something for someone:For them, the house's main value lay in its quiet country location.They are known to place/put/set a high value on good presentation.2) [U] how useful or important sth. is:The photos are of immense historical value.His contribution was of little or no practical value.3) the amount of money which can be received for sth.:She had already sold everything of value that she possessed.What is the value of the prize?3.These statistics prove that gathering information is the primary use for the Internet. primarya) [usually before noun] most important/mainOur primary concern is to provide the refugees with food and healthcare.primary purpose/aim/objectiveTheir primary objective is to make money.Personal safety is of primary importance=is primarily important[only before noun]primary educationteaching at primary level4.The second most common use of the internet, according to 79 percent of the surveyrespondents , is to advance knowledge about the hobbies. ( Line 19)advance vt. 推进,进展,提出n. 前进,预先advance the growth of industry 推进工业的增长advance a new plan 提出新计划make great advances (progress) 取得进步in advance 预先,提前in advance of 在—之前, 在—前面If you want to get the book, you must pay for it in advance. 如果你要买这本书，你得先付款He walked in advance of his wife. 他走在他妻子的前面5.Another truly wonderful aspect of the internet is the way people use it to build social ties. build social ties建立社会联系(Line23)tie n.We have established trade ties with these regions.我们和这些地区建立了贸易关系。
He was wearing a black tie. (领带)tie vt 绑,系tie to 把…栓在He tied his horse to the stick. 他把马栓在木桩上.6.benefitvt/vi. 对…有利; 从…得到利益The new hospital benefited us enormously.I benefited enormously from my father’s advice.n. 利益, 恩惠, 益处I got a lot of benefit from learning a foreign language.be of benefit to 对…有益for the benefit of 为了…的利益benefit from/by 得益于…That experience was of great benefit to me.The warning sign was put there for the benefit of the public.We can benefit from exercises.7.moreover adv. 而且,此外,再者(Line26) =What’s more=besides=in additionHe was, moreover, a poet of promise.此外,他还是一个有前途的诗人。