新概念四整理篇（语法）
1.身尾要平衡。当主宾语太长，或者某个词的定语修饰语太长，可以将它们后挪，这时候一定要注意判断句子的结构。
As a logical consequence of this development,separate journals have now appeared aimed mainly towards either professional or amateur readership.
2.动词不定式作表语时，若前面出现了明显的实意动词，则to 可以省略。
All I have to do is dream.
All I wanted was to help him.
3.if引导的不一定是条件状语从句，也可能是让步状语从句
But the first people who were like ourselves lived so long ago that even their sagas,if they had any,are forgotten.（即使他们有）
4.when 做让步状语从句的时候一般是放在句中
5.强调某个意思时可以把它放句首或者句尾，所以本来某个作为主语的成分并不重要时，可以把它转换为插入语，放中间，弱化它的意思。
Economic development,many of us believe ,is of paramount importance to China.
As a logical consequence of this development,separate journals have now appeared aimed mainly towards either professional or amateur readership.
2.动词不定式作表语时，若前面出现了明显的实意动词，则to 可以省略。
All I have to do is dream.
All I wanted was to help him.
3.if引导的不一定是条件状语从句，也可能是让步状语从句
But the first people who were like ourselves lived so long ago that even their sagas,if they had any,are forgotten.（即使他们有）
4.when 做让步状语从句的时候一般是放在句中
5.强调某个意思时可以把它放句首或者句尾，所以本来某个作为主语的成分并不重要时，可以把它转换为插入语，放中间，弱化它的意思。
Economic development,many of us believe ,is of paramount importance to China.
