一、~~~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：HelenisthemostbeautifulgirlthatIhaveeverseen.
二、Nothingis+~~~erthanto+VNothingis+more+形容词+thanto+V
例句：Nothingismoreimportantthantoreceiveeducation.
三、~~~cannotemphasizetheimportanceof~~~toomuch.(再怎么强调...的重要性也不为过。)
例句：Wecannotemphasizetheimportanceofprotectingoureyestoomuch.
四、Thereisnodenyingthat+S+V...(不可否认的...)
例句：Thereisnodenyingthatthequalitiesofourlivinghavegonefrombadtoworse.
五、Itisuniversallyacknowledgedthat+句子~~(全世界都知道...)
例句：Itisuniversallyacknowledgedthattreesareindispensabletous.
六、Thereisnodoubtthat+句子~~(毫无疑问的...)
例句：Thereisnodoubtthatoureducationalsystemleavessomethingtobedesired.
七、Anadvantageof~~~isthat+句子(...的优点是...)
例句：Anadvantageofusingthesolarenergyisthatitwon’tcreate(produce)anypollution.
八、Thereasonwhy+句子~~~isthat+句子(...的原因是...)
例句：Thereasonwhywehavetogrowtreesisthattheycanprovideuswithfreshair./Thereasonwhywehaveto
growtreesisthattheycansupplyfreshairforus.
九、So+形容词+be+主词+that+句子(如此...以致于...)
例句：Sopreciousistimethatwecan’taffordtowasteit.
十、Adj+as+Subject(主词)+be,S+V~~~(虽然...)
例句：Richasourcountryis,thequalitiesofourlivingarebynomeanssatisfactory.{bynomeans=innoway=onnoaccount一点也不}
十一、Onnoaccountcanwe+V~~~(我们绝对不能...)
例句：Onnoaccountcanweignorethevalueofknowledge.
十二、Itistime+S+过去式(该是...的时候了)
例句：Itistimetheauthoritiesconcernedtookproperstepstosolvethetrafficproblems.
十三、Thereisnoonebut~~~(没有人不...)
例句：Thereisnoonebutlongstogotocollege.
十四、be+forced/compelled/obliged+to+V(不得不...)
例句：Sincetheexaminationisaroundthecorner,Iamcompelledtogiveupdoingsports.
十五、Itpaysto+V~~~(...是值得的。)
十六、Sparenoeffortto+V(不遗余力的)
例句：Weshouldsparenoefforttobeautifyourenvironment.
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