四、在复杂句里，把主句放在从句之后。
除了名词从句和形容词从句之外，因为它们位置较固定，副词从句中有几种的位置灵活，可以在主句之前出现，也可以跟在主句之后。通常我们就把这样的副词从句提前，重点则放在后头的主句，如(3b)：
(3a) I came upon an old classmate when I went to town yesterday.
(3b) When I went to town yesterday, I came upon an old classmate.
副词短语更是如此，如 (4b):
(4a) Steel is commonly used to make knives, razors and other useful toolsbecause of its
durability.
(4b) Beacuse of its durability, steel is commonly used to makeknives,razers and other useful tools.
五、 把较重要或有分量的词语放在后头，如(5b)和(6b)：
(5a) I was delighted and amused by the classical opera.
(5b) I was amused and delighted by the classical opera.
(6a) That singer's life was tragic and brief.
(6b) That singer's life was brief and tragic.
六、把句子中一系列的项目作逻辑性的排列。例如：
(7) Tony ate his dinner, watched TV, and then went to bed.
(8) Were you bored with years of study in elementary school, high schooland institute of
higher education?