1.~~~the+~est+名词+(that)+主词+haveever+seen(known/heard/had/read,etc)~~~themost+形容词+名词+(that)+主词+haveever+seen(known/heard/had/read,etc)例句(lìjù)：HelenisthemostbeautifulgirlthatIhaveeverseen.海伦是我所看过最美丽的女孩。Mr.ChangisthekindestteacherthatIhaveeverhad.张老师是我曾经遇到最仁慈的教师。2.Nothingis+~~~erthanto+VNothingis+more+形容词+thanto+V例句：Nothingismoreimportantthantoreceiveeducation.没有(méiyǒu)比接受教育更重要的事。3.~~~cannotemphasizetheimportanceof~~~toomuch.（再怎么强调...的重要性也不为过。）例句：Wecannotemphasizetheimportanceofprotectingoureyestoomuch.我们再怎么强调保护(bǎohù)眼睛的重要性也不为过。4.Thereisnodenyingthat+S+V...（不可否认的...）例句：Thereisnodenyingthatthequalitiesofourlivinghavegonefrombadtoworse.不可否认的，我们(wǒmen)的生活品质已经每况愈下。5.Itisuniversallyacknowledgedthat+句子~~（全世界都知道(zhīdào)...）例句：Itisuniversallyacknowledgedthattreesareindispensabletous.全世界都知道(zhīdào)树木对我们是不可或缺的。6.Thereisnodoubtthat+句子~~（毫无疑问的...）例句：Thereisnodoubtthatoureducationalsystemleavessomethingtobedesired.毫无疑问的我们的教育(jiàoyù)制度令人不满意。7.Anadvantageof~~~isthat+句子（...的优点是...）例句：Anadvantageofusingthesolarenergyisthatitwon'tcreate(produce)anypollution.使用太阳能的优点是它不会制造任何(rènhé)污染。8.Thereasonwhy+句子~~~isthat+句子（...的原因(yuányīn)是...）例句：Thereasonwhywehavetogrowtreesisthattheycanprovideuswithfreshair./Thereasonwhywehavetogrowtreesisthattheycansupplyfreshairforus.我们必须种树的原因(yuányīn)是它们能供应我们新鲜的空气。9.So+形容词+be+主词+that+句子（如此...以致于...）例句：Sopreciousistimethatwecan'taffordtowasteit.时间是如此珍贵，我们(wǒmen)经不起浪费它。11.The+~er+S+V,~~~the+~er+S+V~~~The+more+Adj+S+V,~~~the+more+Adj+S+V~~~（愈...愈...）例句：Theharderyouwork,themoreprogressyoumake.你愈努力，你愈进步(jìnbù)。Themorebooksweread,themorelearnedwebecome.我们书读愈多，我们愈有学问。12.By+Ving,~~can~~（借着...，..能够..）例句(lìjù)：Bytakingexercise,wecanalwaysstayhealthy.借着做运动，我们能够始终保持健康。13.~~~enable+Object（受词(shòucí)）+to+V（..使..能够..）例句:Listeningtomusicenableustofeelrelaxed.听音乐使我们能够感觉轻松。14.Onnoaccountcanwe+V~~~（我们绝对(juéduì)不能...）例句：Onnoaccountcanweignorethevalueofknowledge.我们绝对(juéduì)不能忽略知识的价值。15.Itistime+S+过去式（该是...的时候了）例句：Itistimetheauthoritiesconcernedtookproperstepstosolveth