4. 平行結構

　　在英語中，當兩個或兩個以上的同等成分(主語，謂語，賓語，表語，定語，狀語，賓語補足語等)并列時，要求它們的詞性或結構相同，即名詞對名詞，介詞短語對介詞短語，分詞對分詞，句子對句子等等。這就是英語的平行結構準則。一般在使用并列連詞如and, but, or, neither … nor, either … or, not only .. but also, both … and, more(less) … than, as well as，rather… than等時，要注意不要違反平行結構準則。

　　He likes watching TV more than reading books.

　　The soldier preferred to die rather than surrender.

　　We saw Tom walking towards the river, taking off his clothes and plunging into the water.

　　Censorship prevents a movie from being shown or a book being sold.

　　5. 反意疑問句

　　在具體運用反意疑問句時應注意以下幾點：

　　1) 如果陳述句部分是一個含有賓語從句的復雜句，則反意疑問部分的謂語動詞和主語代詞要與主句的謂語動詞和主語相對應。

　　He never said she would come, did he?

　　You told me I had passed the exam, didn’t you?

　　但是如果陳述句部分是 “I (don’t) think, believe, suppose, imagine, expect, fancy, reckon等+賓語從句”的結構時，反意疑問部分的謂語動詞和主語代詞要與賓語從句的謂語動詞和主語相對應，并且要注意否定的轉移。