三、一致验证法

所谓一致验证法，即指在补充省略成分时，要注意考虑句子结构的前后一致性，此法尤其适合于做因承前省略而拟编的试题。如：

1. I think I can fix it tomorrow. If ______, you’ll have to wait till Friday.

A. not              B. can’t              C. don’t              D. won’t

分析：答案应选A。if not为if I can’t fix it tomorrow 之省略。其中的if I can’t fix it tomorrow与前面的 I can fix it tomorrow一致。注意，此题不能选B，因为句子已省略了主语。下面请再看一个类似的例子：

If the weather is fine, we’ll go. If _____, _____.

A. not, not         B. no, no            C. not, no             D. no, not

此题应选A。If not, not. 为 If the weather is NOT fine, we will NOT go. 全句意为“如果天气好, 我们就去；如果天气不好，我们就不去”。该句的特点是：后句与前句的用词和句式完全相同, 只是前句为肯定，后句为否定，为了简洁起见, 于是将后句与前句相同部分省略，只保留否定词 not。

2. They are different in form but _____ in meaning.

A. not       B. no        C. aren’t         D. don’t

分析：答案选A，but not in meaning为 but they are not different in meaning 之省略。又如：

(1) In the accident the child was hurt, but the mother _____.

A. killing       B. to kill         C. killed       D. kill

答案选C，but the mother killed 为 but the mother was killed 之省略。

(2) The apartment’s fine for two people, but _____.

A. no more        B. no any        C. not more       D. not any

答案选C，but not more 为 but it is not fine for more than two people 之省略。