比较复杂的复合句最容易出现此类错误,因为句子较长,缺少了某个成分,如主语、谓语、宾语、连词等等。
考点例析:
例1: If his aim is inaccurate and he scores a goal, enjoys S3.____
the hunter’s triumph of killing his prey.
解析:这是由一个条件状语从句引导的复合句。但主句只有谓语动词enjoys,缺少主语,因此要步上主语。根据从句的his aim可推断应该加上主语he。
例2:Nuclear physicists who interested in the structure of 5._________
atoms cannot observe protons, electrons and neutrons
directly.
解析:如果将who后面的部分作定语从句,那么它绝少谓语,故将who去掉,此时分词短语interested in直接作定语修饰前面的physicists。或在who后加are,补全定语从句。
例3:This alliance guarantees that all leprosy patients, even they S6.______
are poor, have a right to the most modern treatment.
解析:even是副词,后面不能直接跟句子,根据句子的意思,应该在even后加if或though。