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,...2015-09-29
Can Buildings Be Designed to Resist Terrorist Attack?In the aftermath of the terrorist attack on the World Trade Center, structural engineers are try...2015-09-29
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...2015-09-29
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 ...2015-09-29
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...2015-09-29
名词或代词作主语时和谓语之间的单复数的一致问题:1.谓语和谓语基本保持单复数的一致,即:主语是可数名词单数或不可数名词时,谓语动词用单数形式:如:The computer was a great invention.(计算机是个了不起的发明)The water in the glass is ver...2015-09-29
动词不定式可以在句子中用作状语,有下列几种情况:[A] 放在不及物动词(come,go,stop,finish,wait等词)的后面。如:He came to see her yesterday.(他昨天来看望她)(表示来的目的)/ I stopped to have a rest.(我停下来休息一...2015-09-29
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...2015-09-29
Are You Just Not Ill or Excellent in Health?As we have seen, the focus of medical care in our society has been shifting from curing disease to prevent...2015-09-29
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...2015-09-29
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...2015-09-29
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...2015-09-29
Eiffel Is an EyefulSome 300 meters up,near the Eiffel Tower's wind-whipped summit the world comes to scribble.Japanese,Brazilians.Americans-they graf...2015-09-29
The Effects of Global Warming on WeatherThere are hidden factors which scientists call "feedback mechanisms”。 No one knows quite how they will interac...2015-09-29
Benefits of Educating GirlThe benefits of educating girls are numerous — to individual girls both when they are young and when they become adult women...2015-09-29
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...2015-09-29
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...2015-09-29
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 ...2015-09-29
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 ...2015-09-29
add up to合计,总计break away(from)脱离,逃跑come true实现,达到come up with提出,提供do away with废除,去掉have nothing to do with和…毫无关系make believe假装catch up with追上,赶上come u...2015-09-29