写作提升练(六)概要写作
1
阅读下面短文,根据其内容写一篇60词左右的概要。
A new,first-of-its-kind study examines the connection between teacher burnout and students’ stress levels.Researchers from the University of British Columbia
collected saliva (唾液) samples from over 400 elementary school children,grades from four to seven,at 17 public schools.Cortisol (皮质醇) levels were then assessed from the samples as the hormone is commonly used as a biological indicator of
stress.Correspondingly,teacher burnout was determined through survey results.
Investigators found that in classrooms in which teachers experienced more burnout,or feelings of emotional exhaustion,students’ cortisol levels were elevated (提升).Higher cortisol levels in elementary school children have been linked to learning difficulties as well as mental health problems.The study appears in the journal Social Science&Medicine.“This suggests that stress contagion (蔓延) might be taking place in the classroom among students and their teachers,” said Eva Oberle,Ph.D.,the study’s lead aut hor.
Indeed,the relationship between student stress and teacher burnout is a chicken and egg question.“It is unknown what came first,elevated cortisol or teacher burnout.We consider the connection between student and teacher stress a cyclical problem in th e classroom.” Oberle said a stressful classroom climate could be a result of inadequate support for teachers,which may impact teachers’ ability to effectively manage their students.A poorly managed classroom can contribute to students’ needs not being met and increasing stress.This could be reflected in elevated cortisol levels in students.
Alternatively,stress could originate from students,who may be more challenging to teach because of increases in anxiety,behavioral problems,or special needs.In this case,teachers could feel overwhelmed and report higher levels of burnout.
“Our study is a reminder of the systemic issues facing teachers and educators as classroom sizes increase and supports for teachers are cut,” said Oberle.“It is clear from a number of recent research studies that teaching is one of the most stressful professions,and that teachers need adequate resources and support in their jobs in order to battle burnout and relieve stress in the classroom,” said
University of British Columbia education professor Kimberly Schonert Reichl,Ph.D.,the study’s co-author.“If we do not support teachers,we risk the damage of students.”
2
(2018·浙江新昌中学高三模拟)
阅读下面短文,根据其内容写一篇60词左右的内容概要。
According to most people,after a long period of studying or working,we need to have a rest to refresh ourselves.However,that may not be the case.According to a recent report,you don’t need the break as much as you may think that makes you feel less tired.
Scientists have long assumed that willpower is a limited resource,which is why you feel the need to have a rest,have a snack and then get back to task when you are feeling better.They argue that the only way it restores willpower is by rest,food or entertainment.
But psychologists have challenged this theory,saying weak willpower is all in your head.They have found that people’s belief in willpower determines how long and how well they’ll be able to work on tough mental exercise.“If you think of
willpower as something that is not really used up,you can go on and on,” said Professor Veronika Job.
The researchers designed four experiments to test students’ belief in willpower.After a tiring task,those who believed,or were led to believe that willpower is a limited resource,performed worse on standard concentration tests than those who thought of willpower as something they had more control over.They also found that leading up to the final exam week,students who believed the limited resource theory ate junk food 24 percent more often than those who believed they had more control in resisting the temptation.
Mr.Job said,“The theory that willpower is a limited resource is
interesting.Belief in willpower as a non-limited resource makes people stronger in their ability to work through challenges.”
The findings can help people who are battling aga inst temptation.Willpower isn’t driven by a biologically-based process as much as we used to think.The belief in it is what influences your behaviors.
写作提升练(六) 概要写作
1
A new research shows that student strain often coexists with teacher
exhaustion.(要点1)Students,who find their requirements unsatisfied as a result of teachers’ low-level management over class,may feel overwhelmingly stressed.(要点2) Conversely,teachers,who encounter great teaching challenge from students,tend to be burned out.(要点3) Therefore,more sufficient resources and support to teachers should be guaranteed,or students are likely to be ruined.(要点4)
2
Based on a recent report,having a rest to refresh yourself is not so essential as some people think.(要点1)Willpower,assumed to be a limited resource by some scientists,is thought to be only regained by rest,food,as well as entertainment.(要点2)However,this theory has been challenged.Researchers,including Veronica
Jobs,conducted experiments and made some new discoveries.(要点3)If you believe that willpower is limitless,you will be more powerful,which is a potential help to resist temptation.(要点4)
高考试题 考点一记叙文 Cloze 1 (2013新课标全国Ⅰ) I went to a group activity,“Sensitivity Sunday”,which was to make us more 1 the problems faced by disabled people.We were asked to “ 2 a disability”for several hours one Sunday.Some members, 3 ,chose to use wheelchairs.Others wore sound-blocking earplugs(耳塞)or blindfolds(眼罩). Just sitting in the wheelchair was a 4 experience.I had never considered before how 5 it would be to use one.As soon as I sat down,my 6 made the chair begin to roll.Its wheels were not 7 .Then I wondered where to put my 8 .It took me quite a while to get the metal footrest into 9 .I took my first uneasy look at what was to be my only means of 10 for several hours.For disabled people,“adopting a wheelchair”is not a temporary(临时的) 11 . I tried to find a 12 position and thought it might be restful, 13 kind of nice,to be 14 around for a while.Looking around,I 15 I would have to handle the thing myself!My hands started to ache as I 16 the heavy metal wheels.I came to know that controlling the 17 of the wheelchair was not going to be a(n) 18 task. My wheelchair experiment was soon 19 .It made a deep impression on me.A few hours of “disability” gave me only a taste of the 20 ,both physical and mental,that disabled people must overcome. 1.A.curious about B.aware of C.interested in D.careful with 2.A.cure B.adopt C.prevent D.analyze 3.A.instead B.strangely C.as usual D.like me 4.A.learning B.working C.satisfying D.relaxing 5.A.convenient B.awkward C.boring D.exciting 6.A.height B.force C.skill D.weight 7.A.locked B.repaired C.powered D.grasped 8.A.hands B.feet C.keys D.handles 9.A.place B.action C.play D.effect
广东高考英语语法填空专题训练语法填空（每篇共10小题；每小题1.5分，每篇满分15分） 阅读下面短文，根据上下文填入适当的词语，或使用括号中的词语的适当形式填空， 并将答案填写在答题卡上标号为1—10的相应位置。 Passage (1) Cars are too expensive for many people around the world to own. Not only that, many cities are already full of traffic, and many country areas have rough roads. So 1 do people travel those distances that are too far to walk? They use public transportation. If you ride the subway or bus 2 you live, you can appreciate some of the benefits of public transportation. With many people 3 (share) one bus or train, there is less traffic and, more 4 （importance）, less pollution. Which of the types of mass transit 5 (describe) below are you familiar with? If a regular bus can hold dozens of people, imagine what a bus 6 (two) the size can hold! In Great Britain, there are many buses that are known as double-deckers (cars with two floors). Buses in Haiti are often very crowded. It’s not 7 (common) for passengers to actually sit on the rooftops. Buses are sometimes called “tap-taps”, because the 8 (ride) on the roof tap（敲击）when they want to be dropped off. Many large cities around the world take advantage of the space beneath the streets and run underground trains. People in Paris, Mexico City and Tokyo may use the subway system to get to school, to work, or to visit friends in other 9 (neighbor). Both the Japanese and French have developed High-speed trains to link various cities. While electric trains in North America average 130 kph, the French TGV (high-speed-train) is the world’s fastest, 10 (average) over 270 kph! Passage (2) Australia, the last continent, was discovered by ships 1 (belong) to some European nations in the seventeenth century. These nations were 2 (little) interested in changing it into a colony than in 3 (explore) it. As in the early history of the United States, it was the English 4 set up the settlements in Australia. This history and the geography of these two British colonies have some other things in common as well. Australia and the United States are about the same in size, and their western lands are both not rich 5 soil. It was on the eastern coast of Australia and America that the English first settled, and both colonies soon began to develop towards the west. However, this westward 6 (move) took place 7 because the English were searching for better land than the population was increasing. Settlements of the west part of both countries developed quickly after gold 8 (discover) in America in 1849 and in Australia two years later. Although the development of these two countries has a lot in common, there are some 9 (strike) differences as well. The United States gained its independence from England by revolution while Australia won its independence without having to go to war. Australia, 10 (like) the United States, was firstly turned into a colony by English prisoners and its economic development was in wheat growing and sheep raising. By 1922, for example, Australia had fifteen times more sheep than it had people or almost half as many sheep as there are people today in the United States. Australia and the United States have more in common with each other than either one has with most of the rest of the world.
高考英语二轮复习策略 英语卷无论是考试形式、试题结构，坚持稳定为主，注重基础考查，重点考查考生“在特定语境中语言运用能力”，即运用英语获取信息、处理信息、分析问题和解决问题的能力.始终不变的重点知识，考生应该将其列为复习内容，同时抓牢基础知识，不要一味做偏、难、怪题.现提供以下三大点备考建议供参考： 一、回归基础，突出对主干知识的复习 高考英语改革虽然从强调知识考查向注重综合语言运用能力转变，但是还应认识到能力要有扎实的基础作为依托.尤其是到最后冲刺阶段更要重视基础知识的复习.一模后，一些考生普遍都有这样的感觉：很多题目“一看就会，一做就错”.造成这种现象的根本原因在于对基础知识的掌握不牢固.只有扎扎实实地从基础做起，才能“一看就会，一做就对”.英语基础知识包括词汇、语法、句型等.词汇复习应做到从不间断、反复巩固.除了记忆和理解之外，尤其要注意常用词汇的使用和辨析，以及一词多义的掌握.语法复习要理清基本概念，着重复习主干知识.比如，动词的时态、语态、语气，非谓语动词、情态动词等都是高考常涉及的知识点.但切记不要在钻研语法的难点上花过多时间，英语语法不是数学公式，在不同的语境中用法就不同. 二、查漏补缺，强化专题训练 一模结束后，复习的重点要放在查漏补缺上.将做过的试卷整理后，建立错题档案，弥补知识漏洞，进行强化记忆和训练.比如，在建立错题档案时发现在非谓语动词、从句方面出错率比较高，就应该重
点复习这方面的知识.不要注重记多少题，重要的是记住老师在课堂上对这些题的分析过程.抄录资料或刊物上的讲解也是值得推荐的方法.到考试前再回顾、反思、比较、消化，以期达到遇到同类试题不再出错的目的.复习中要加强题型专项训练，在训练中提高解题能力和解题速度；尤其要重视听力训练，所选听力材料不宜过难，语速要适中.复习中应适当加强对重点内容的强化训练和题后分析，提高“考点识别、寻找已知条件、排错求证”的思维能力.训练快速阅读的能力，提高带着问题快速搜索信息，根据上下文提示进行逻辑推断的能力.多读一些原汁原味的文章，通过广泛涉猎，培养英语语感，提高对词、句、篇的理解速度和准确度.专项训练要多、模拟测试要适当. 强调阅读语速是语言实际运用的主要特征之一，一般应保持在60wpm左右，按照“高中英语课程标准”要求，高中毕业时甚至应该达到70―80wpm.在平时训练中一定要注意坚持阅读速度的要求.在真实语言环境中，所接触材料的篇章结构和语句结构往往是丰富多样的，需要通过自己平时的大量阅读实践掌握熟悉它们，考试中能够迅速突破，克服障碍，把握大意.选材中出现生词完全正常，平时培养处理词汇的能力，考试中才能应对所出现的各种情况，也正是真实语言运用中所需要的一种能力.阅读选材往往具有一定思想内涵，阅读中需要保持头脑清醒，在所提供的思维空间中捕捉观点与抽象概念，理顺思路，加深理解.训练形式也应该是精读与泛读相结合.不能一味地做阅读理解题，这样不利于培养学生的阅读能力.高考中很多考查项目都是以选择题形式出现的，但很明显，如果只用选择题来训练是不科学的.而在我平时教学和视导过程中，用大量选择题来“培养”学生语言运用能力的现象很普遍，需特别关注.另外，从运用语言的角度来看，所读材料为自己所不熟悉是完全正常的，应该让学生有此心理准备.尤其是英语语言文化背景鲜明的内容，需要凭借自己的阅读能力，读懂材料获取信息，解决问题，也正是成功运用语言的具体体现. 语言的输入决定语言输出，想写出更为地道的英文，必须通过听
---------------------------------------------------------------最新资料推荐------------------------------------------------------ 高考英语语法总复习(共15个专题附练习及答案) 语法复习专题一——名词.①抽象名词表示具有某种特性、状态、感情情绪的人或事。 如：一、考点聚焦抽象名词（不可数）具体化（个体名词，可数名词）1.可数名词单、复数变化形式in surprise 惊讶地a surprise 一件令人惊讶的事（1）规则变化。 win success 获得成功a success 一个(件)成功的人(事)①单数名词词尾直接加-s。 如：boy — boys, pen — pens。 win honor 赢得荣誉an honor 一个(件)引以为荣的(事)①以 s、x 、ch 、sh 结尾的单词一般加-es。 如：glass —glasses,box—boxes,Failure(失败)is the mother of successa failure 失败者watch —watches, brush —brushes。 失败是成功之母。 特例：stomach — stomaches。 by experience 靠经验an experience 一次经历①以”辅音字母+ y”结尾的变“y”为“i”再加“-es”。 如：youth 青春a youth 一个青年人baby — babies, lady —ladies, fly — flies。 have pity on sb.怜悯某人a pity 可惜的事情①以“o”结尾的多数加-es。 1/ 146
全国卷高考英语语法填空专项训练 语法填空练习一 With the 1________ (develop) of industry, air pollution is getting more and more serious. In Beijing, many people suffer different kinds of illnesses because 2______ air pollution. Air pollution is caused by the following 3_____(reason): about half of the problem is caused by vehicles. There are more and more cars, buses on the roads, and they give off 4________ (poison) gases. 25% of air pollution is caused by factories. Another factor is the smokers. Smoking not only does harm to their health 5______ to others. 6_______ these, about 10%of air pollution is caused by other reasons. We should take some measures to fight 7______ pollution. New fuel can be used to take 8______place of gas. We can plant more trees. If everybody realizes the 9________ (important) of environment and does something to stop pollution, the problem will 10_________ (solve). 语法填空练习二 We often think of future. We often wonder 1 the world will be like in a hundred years’ time. Think of space. Perhaps a permanent station on 2 moon will 3 (set) up. Perhaps people will be able to visit the moon as 4 _ (visit). Cheap rockets for space travel will have been developed, 5 in space and visiting 6 planets. Great progress will have been made 7 medicine, too. Pollution will have been controlled in a hundred years’ time. 8 the world will have been developed—even Antarctica. We will have used up most of the earth’s land to build our cities, 9 floating cities will have been built. The Japanese have already plans of this kind. And there will be cities 10 the sea. 语法填空练习三 In the United States, there were 222 people 1 (report) to be billionaires in 2003. The 2 (rich)of these is Bill Gates, worth at least $41 billion, who made his money 3 Mr Gates was only 21 years old 4 5 the time he was 31. 6 , there are still some other people who have made lots of money at even 7 (young) ages like Jackie Coogan and Shirley Temple. 8 of these child actors made over a million dollars 9 (act) in movies before they were 14. But 10 youngest billionaire is Albert von Thurn and Taxis of Germany, who, in 2001, inherited a billion dollars when he turned 18. 语法填空练习四 Most Americans don’t like to get advice 1 members of their family. They get advice from “ 2 (strange).” When they need advice, they don’t usually go to people they know. Instead，many of 3 write letters to newspapers and magazines 4 give advice on many different subjects 5 (include) family problems, the use of language, health, cooking, child care, clothes, 6 even on how to buy a house or a car. Most newspapers 7 (regular) print letters from readers with problems. Along with the letters there are 8 (answer)written by people who are supposed to know how to solve such problems. Some of these writers are doctors. 9 are lawyers or educators. But two of the most famous writers of advice are women without special 10 (train) for this kind of work. 语法填空练习五
2012届高考英语二轮专题复习词汇系列（一） 【必会词汇】 时刻：dawn, deadline, instant, moment, by the time, from now on, in time, on time 时段：age, century, decade, future, interval, period, stage; contemporary, permanent, temporary, forever, meanwhile, for a time/ while, for the time being 频度：annual, daily, frequent, occasional, regular, monthly, weekly, yearly, occasionally, once, seldom, twice, at a time, at times, time and time again, now and then 时序：final, former, previous, afterward(s), ago, eventually, ever, first, gradually, immediately, just, last, late, later, next, shortly, since, soon, then 相关：介词: after, at, before, by, during, for, in, on, since, throughout, until, upon 动词: last, pass, run, take 连词: after, as, as soon as, before, hardly…when, no sooner…than, once, since, till, until, when, whenever, while 天气：寒冷天气：frost, ice, snow, wind, freeze, cold, freezing, snowy, windy, 温热天气：heat, warmth, clear, dry, fine, fresh, hot, mild, sunny, warm 云雨天气：cloud, downpour, rain, rainbow, shower, storm, thunder, thunderstorm, lightning, pour, cloudy, cool, damp, rain, wet 雾：fog, mist, foggy 其他：climate, forecast, weather, changeable, terrible 自然灾害：名称：earthquake, fire, flood, hurricane, volcano, typhoon, 相关动词：blow, burn, burst, destroy, die, erupt, predict, rescue, ruin, shake, supply, survive 其他：ash, damage, danger, death, disaster, nature, survival, victim, dangerous, muddy, natural 天气(Weather) 相关话题 天气与人类的生活息息相关，谈论天气，是老百姓最关注的话题之一。在写作中weather涉及的主要内容有：a. Describing weather ( sunny, cloudy, windy, rainy, hot, warm, cold, cool, etc.) b. Understanding weather reports (conditions, temperature, rain, snow, wind, sun, cloud) c. Dressing for the weather (coat, hat, umbrella, raincoat, windbreaker, etc.) d. Extreme weather (storms, gales, hurricanes, etc.) 1. 常见描述天气状况的词汇有： rainfall(降雨), snowfall(降雪), storm(暴风雨), sandstorm(沙尘暴 ), temperature(气温 ), bright, clear, fine, sunny, windy, cloudy, rainy, snowy, foggy(有雾的 ), cool, hot, dry, wet, warm, cold, chilly（寒冷的）, freezing, frost(霜冻)etc. 2. 谈论天气常用的句型： 1). Asking about the weather(询问天气情况) a). What’s the weather like today?/How is the weather today?/How is it today?今天的天气怎么样？ b) How do you like our weather? 你知道我们这儿的天气怎么样？ c). Is the weather always like this? 天气总是这样吗？ d). Is it always as cold as this? 天气总是这样冷吗？
2012届高三英语二轮专题复习----七选五根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 （1） Are you truly happy? 1 These are important questions for anyone who is seeking happiness to ask themselves．The following are a few tips that I follow to create happiness in my life． ● Make a plan for attaining goals that you believe will make you h appy．Your moods will very likely increase if you are going after something you value． ●Surround yourself with happy people． 2 On the contrary, if you are around people who are happy, their emotional state will be infectious． ●When something goes wro ng, try to figure out a solution instead of being absorbed in self pity．Truly happy people don’t allow setbacks to affect their mood because they know that with a little thought they can turn the circumstances back to their favor． ● 3 These few minutes will give you the opportunity to focus on the positive things in your life and will lead you to continuous happiness． ● 4 You can treat yourself to lunch, take a long, relaxing bath or simply spend a few extra minutes on your appearance．Then you will be subconsciously（下意识地）putting yourself in a better mood． ●Finding the humor in situations can also lead to happiness．Find a way to make light of a situation that would otherwise make you happy． ●Keeping healthy is another way to achieve happiness． 5 A．It is easy to begin to think negatively when you are surrounded by people who think that way．B．Being overweight or not eating nutritious foods can have a negative effect on your mood． C．Do you ever know what it means to be happy and what it takes to achieve happiness? D．It’s also important to take some time each day to do something nice for yourself． E．Is true happiness hard to reach for most of us? F．Spend a few minutes each day thinking about the things that make you happy． G．Speak your trouble out to your close friends openly． （2） You can never be too sure these days in the United States of your neighbours or even your customers!
2020;2020届高考英语专题总复习写作习语 碍于情面 for fear of hurting sb’s feelings 居安思危 be mindful of possible danger in time of peace 安分守己 act proper to one’s status 安于现状 be content with things as they are 循序渐进 learn to walk before you run 班门弄斧 teach a dog to bark 本末倒置 put the cart before the horse 闭门造车 work on some project without reference to what the world requires 避重就轻 avoid the crucial point and take the minor 标本兼治 put things right once and for all 表里如一 one’s outer and inner selves are in harmony 冰冻三尺非一日之寒 a tree will not fall at one blow 病急乱投医 a drowning man will catch at a straw 不得要领 be beside the point 不分轻重缓急 have no sense of priority 不顾大局 be regardless of the whole situation 不顾事实 have no regard for the truth 不经灾难不知福 misfortune tells us what fortune is 不经一事不长一智 experience is the best teacher 不破不立 there is no making without breaking 不求甚解 be content with a superficial understanding 不以规矩不能成方圆 rules and regulations must be adhered to in handling affairs 操之过急 catch the ball before the bound 差之毫厘谬以千里 one false step will make a great difference
高考英语语法填空专题训练答案及解析 一、语法填空 1．阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。 A few months ________(early), Stephanie Heller, had finished her workout in the gym when she ________(notice)a woman in the parking lot struggling to bend down. Ms. Heller offered to help her. The woman blamed old age for her incapacity, ________(explain)that she was 70. But Ms. Heller was 71. "This woman felt every bit her age." she recalled. "I don't let age stop me. I need a good mood, really. I love singing and dancing with all the young friends I ________ (make)over the years. I'm only as old as I feel." Each of us has ________actual age, the number we celebrate on birthdays. But some 50-, 60-and 70-year-olds look and feel ________(youth), while others do not. Scientists measure these differences by looking at age-related things like skin elasticity, blood pressure and so on, finding some ________(connect)among them. People ________a healthy lifestyle and a fortunate genetic inheritance(继承)tend ________(score) "younger" on these assessments. When scientists ask, "How old do you feel, most of the time?" the answer can reflect the state of people's physical and mental health. The age given is a virtual one, ________is called "subjective age". 【答案】earlier；noticed；explaining；have made；an；youthful/young；connection/connections；with；to score；which 【解析】【分析】本文是一篇说明文，有的人看起来比实际年龄小，是因为健康的生活方 式，好的遗传基因让人看起来更年轻，研究发现一个人的心态可以反应他的主观年龄。 （1）考查形容词。根据后文的had finished过去完成时，可判断事情发生在过去之前， a 几个月之前”，可以和过去完成时连用，故填earlier。 few months earlier“ （2）考查时态。根系句子可知此处是从句谓语动词，此处考查固定句型had done…when(从句用一般过去时)刚做完某事突然就……，故填noticed。 （3）考查非谓语动词。分析句子可知此处是非谓语动词作状语，逻辑主语the woman和explain（解释）之间是主动关系，应用现在分词，故填explaining。 （4）考查时态。分析句子可知此处是定语从句谓语动词，根据下文的over the years(在过去几年里)判断该句为现在完成时，主语为I，故填have made。 （5）考查冠词。age的可数名词，此处是泛指，应用不定冠词，又actual是元音音素开头，故填an。 （6）考查形容词。此处应填形容词作为feel的表语，youth的形容词是young和youthful，故填young/youthful。 （7）考查名词。此处应填名词作为finding的宾语，connect的名词形式connection为可数名词，some可以理解为“一些/某个”，故此处可以用名词单数形式，也可用复数形式， 故填connection/connections。 （8）考查介词。句意：拥有健康生活方式和好的遗传基因的人倾向于在这些评价中获得 高分。分析句子可知此处应填介词，再结合句意表示“有”的介词是with，故填with。 （9）考查非谓语动词。tend to do sth固定短语，“倾向于做某事”，故填to score。
2018届高考英语二轮复习专题 mother died ____ hungry and cold Afrom,of Bof,from Cfrom,from Dofof 6 If you run ____ two hares you will catch neither Ainto Bafter Coff D out of 7 This is a mon mistake ____ students A between Bover C among D about 8 My father began to work ____ a bus driver when he was twenty years old Afor Bto Cat Das 9 _____ hearing the news, I was wild ____ joy A At, in B On, with C After, by D /, over 10I don’ t think Xiao Li is ____ the other students ____ mathematics A after, on B after, with C behind, in D behind, at 11 Nobody knows it ____ me A except for B except that C besides D but 12 The windois never opened ____ in summer A but B except C except for D but for 13 It happened ____ the Long March A during Bin Cat Dfor 14 We go to school ____ a bike Ain Bon Cby Dove 15 It’s very kind____ you to repair the bike ____ me Aforfor Bof,of Cof,forDfor,of 16 Fresh air is good ____ your health Aat Bfor Cof Dto 17The boy is waiting ____ his sister and they will go to