分词短语作状语时,其逻辑主语必须与句子的主语一致。如果与句子主语不一致,那么分词短语就需要有自己的逻辑主语,这就是独立主格结构形式。此结构通常在句中起方式、时间、条件等状语或状语从句的作用,一般由名词或代词+分词/不定式/形容词/副词/介词短语/名词等构成。下面分述如下:一、名词或代词+分词(doing或done)这种结构的功能相似于分词或分词短语作状语, When the participle phrase is an adverbial, its logical subject must be consistent with the subject of the sentence. If inconsistent with the subject of the sentence, then the participle phrase needs its own logical subject, which is the form of independent subject structure. This structure usually plays the role of adverbial or adverbial clauses, such as the way, time, condition, etc., in the sentence. It is usually composed of noun or pronoun + participle / infinitive / adjective / adverb / prepositional phrase / noun. The following is described as follows: First, the noun or pronoun + participle (doing or done) This structure functions similar to the participle or participle phrase as adverbial,