once upon a time从前no wonder难怪，怪不得decline with thanks婉言谢绝account for说明(原因等)allow for考虑到arrive at达成，得出ask for请求，要求begin with从开始break off断绝，结束break up中止，...
Better Control of TB Seen If a Faster Cure Is FoundThe World Health Organization1 estimates that about one-third of all people are infected with bacte...
Benefits of Educating GirlThe benefits of educating girls are numerous — to individual girls both when they are young and when they become adult women...
用法辨析：(1)“Why not+动词原形+…?”(干嘛不……?)是简略句，完全形式是：Why don't you +动词原形+…?如：Why not go and have a look?(干嘛不去看看?)/Why not try it once again?(为什么不再试试?)(2) seem...
答案在下一页One Good Reason to Let Smallpox LiveIt's now a fair bet that we will never see the total extinction of the smallpox virus.The idea was to cap t...
From Ponzi to MadofThe year was 1920. The country was the United States of America. The man's name was Charles Ponzi. Ponzi told people to stop depos...
come/go into effect生效，实施catch one eye引人注目make a face做鬼脸catch fire着火make friends交朋友，友好相处make fun of取笑，嘲弄lose heart丧失勇气，失去信心get hold of抓住，掌握throw/cast l...
Motoring Technology1.2 million road deaths worldwide occur each year,plus a further 50 million injuries.To reduce car crash rate,much research now is ...
be able to(do)能(做)，会(做)be absent from缺勤，缺课be accustomed to习惯于be active in积极于be alive to发觉，感觉，对…敏感be angry with对……发怒be anxious for急切盼望，渴望be about to(do...
Lead PollutionLead deposits, which accumulated in soil and snow during the 1960’s and 70’s, were primarily the result of leaded gasoline emissions ori...
名词：(一)英语名词可分专有名词和普通名词两大类：1.专有名词是个别的人、地、物、团体、机构等的专用名称。专有名词中实词的第一个字母要大写。如：Beijing, Tom, the People’s Republic of China(中华人民共和国)专有名词如果是含有普通名词的短语,则必须使用定冠词...
Investment and ConsumptionInvestment in the public sector,such as electricity,irrigation,public services and transport (excluding vehicles,ships and p...
Most Adults in US Have Low Risk of Heart DiseaseMore than 80 percent of US adults have a less than 10–percent risk of developing heart disease in the ...
and so on等等all at once突然;同时，一起once(and)for all一劳永逸，限此一次by oneself独自地，单独地other than不同于all right好，行ever since从那时起，自那时以来ever so非常，极其so…as to结果是;如此……以至于at...
The Effects of Global Warming on WeatherThere are hidden factors which scientists call "feedback mechanisms”。 No one knows quite how they will interac...
代词(一)代词的分类：英语中代词分为：人称代词、物主代词、反身代词、指示代词、关系代词、疑问代词、连接代词和不定代词等等。(二)人称代词：人称代词代替人和事物的名称,分为主格和宾格两种形式。1.主格用来作句子的主语、表语。如： I often go shopping on Sundays.(星期天我...
go before居前have to/have got t0不得不，必须help oneself自取所需(食物)keep out of躲开，置身…之外get out of逃避，改掉have get有give oneself up自首，投降，投案go along with陪同前往，随行g0 in fo...
Physical FitnessPhysical fitness is today’s hot topic. And wherever you turn, you hear something new. But is it all true?The more you sweat, the more ...
Britain’s Solo SailorEllen MacArthur started sailing when she was eight，going out on sailing trips with her aunt.She loved it so much that she saved h...
Gross National HappinessIn the last century, new technology improved the lives of many people in many countries. However, one country resisted these c...