1　On　no　account　can　we　　+　V　

　　例句：On　no　account　can　we　ignore　the　value　of　knowledge.

　　2　It　is　time　+　S　+　过去式　

　　例句：It　is　time　the　authorities　concerned　took　proper　steps　to　solve　the　traffic　problems.

　　3　There　is　no　one　but　

　　例句：There　is　no　one　but　longs　to　go　to　college.

　　4　be　+　forced/compelled/obliged　+　to　+　V　

　　例句：Since　the　examination　is　around　the　corner,　I　am　compelled　to　give　up　doing　sports.

　　5　It　pays　to　+　V　

　　例句：It　pays　to　help　others.

　　6　Spare　no　effort　to　+　V　

　　例句：We　should　spare　no　effort　to　beautify　our　environment.

　　7　~~~ the + ~ est + 名词 + + 主词 + have ever + seen

　　~~~ the most + 形容词 + 名词 + + 主词 + have ever + seen

　　例句：Helen is the most beautiful girl that I have ever seen.

　　8　Nothing is +er than to + V Nothing is + more + 形容词 + than to + V

　　例句：Nothing is more important than to receive education.

　　9 cannot emphasize the importance of too much.

　　例句：We cannot emphasize the importance of protecting our eyes too much.

　　10　There is no denying that + S + V ...

　　例句：There is no denying that the qualities of our living have gone from bad to worse.

　　11　It is universally acknowledged that + 句子

　　例句：It is universally acknowledged that trees are indispensable to us.

　　12　There is no doubt that + 句子

　　例句：There is no doubt that our educational system leaves something to be desired.

　　13　An advantage of is that + 句子

　　例句：An advantage of using the solar energy is that it wont create any pollution.

　　14　The reason why + 句子 is that + 句子

　　例句：The reason why we have to grow trees is that they can provide us with fresh air./ The reason why we have to grow trees is that they can supply fresh air for us.

　　15　So + 形容词 + be + 主词 + that + 句子

　　例句：So precious is time that we cant afford to waste it.

　　16　Adj + as + Subject+ be, S + V

　　例句：Rich as our country is, the qualities of our living are by no means satisfactory. {by no means = in no way = on no account 一点也不}

　　1　On　no　account　can　we　　+　V　

　　例句：On　no　account　can　we　ignore　the　value　of　knowledge.

　　2　It　is　time　+　S　+　过去式　

　　例句：It　is　time　the　authorities　concerned　took　proper　steps　to　solve　the　traffic　problems.

　　3　There　is　no　one　but　

　　例句：There　is　no　one　but　longs　to　go　to　college.

　　4　be　+　forced/compelled/obliged　+　to　+　V　

　　例句：Since　the　examination　is　around　the　corner,　I　am　compelled　to　give　up　doing　sports.

　　5　It　pays　to　+　V　

　　例句：It　pays　to　help　others.

　　6　Spare　no　effort　to　+　V　

　　例句：We　should　spare　no　effort　to　beautify　our　environment.

　　7　~~~ the + ~ est + 名词 + + 主词 + have ever + seen

　　~~~ the most + 形容词 + 名词 + + 主词 + have ever + seen

　　例句：Helen is the most beautiful girl that I have ever seen.

　　8　Nothing is +er than to + V Nothing is + more + 形容词 + than to + V

　　例句：Nothing is more important than to receive education.

　　9 cannot emphasize the importance of too much.

　　例句：We cannot emphasize the importance of protecting our eyes too much.

　　10　There is no denying that + S + V ...

　　例句：There is no denying that the qualities of our living have gone from bad to worse.

　　11　It is universally acknowledged that + 句子

　　例句：It is universally acknowledged that trees are indispensable to us.

　　12　There is no doubt that + 句子

　　例句：There is no doubt that our educational system leaves something to be desired.

　　13　An advantage of is that + 句子

　　例句：An advantage of using the solar energy is that it wont create any pollution.

　　14　The reason why + 句子 is that + 句子

　　例句：The reason why we have to grow trees is that they can provide us with fresh air./ The reason why we have to grow trees is that they can supply fresh air for us.

　　15　So + 形容词 + be + 主词 + that + 句子

　　例句：So precious is time that we cant afford to waste it.

　　16　Adj + as + Subject+ be, S + V

　　例句：Rich as our country is, the qualities of our living are by no means satisfactory. {by no means = in no way = on no account 一点也不}