外研版九年级英语知识点.docx

第 1 页 共 称状语从句)：“When the explorers climbed up the hill, they saw several boars/ several boars were seen.”
⒉垂悬副词短语，如：
After putting a shrimp on the hook, the fish began to bite.
这句的副词短语(adverb phrase)和主语“the fish”有什么逻辑关系呢?真正的逻辑主语应当是“the fisherman”或“the angler”才对。改正方法：
(a) After putting a shrimp on the hook, the fisherman found that the fish began to bite.
(b) After the fisherman had put a shrimp on the hook, the fish began to bite.
⒊垂悬不定式动词短语，如：










To write well, a lot of practice is needed.
To be a loyal employee, a sense of belonging is a must.
这两个句子的不定式动词短语(infinitive phrases)并不能修饰“practice”和“a sense of belonging”，真正的主语必需是“ 人”，如：
(a) To write well, one needs a lot of practice/a person has to practise a lot.
(b) To be a loyal employee, he or she must have a sense of belonging.
上述三类垂悬结构中，第一类发生的频率，必需留意。但是在下列三种状况下，分词短语是对的，它们并非垂悬结构：
第一，独立结构(The Absolute Construction，见3月7日《中英合谈》)中的分词短语有自己的主语，所以不是垂悬结构。例如：
Such being the case, we can go home now./……it is not wrong to call it a day.
其次，当分词含有介词或连词性质时，它不须要逻辑主语，所以没有垂悬问题存在。例如：
Owing to a lack of fu