As clauses analysis
Yu Qiu · Journal of Shenyang College of Education · 2003
As used as relative pronouns can replace the whole main sentence as subject,object and predicative in the clauses.As can introduce the restributive attributive clauses,and non-restrictive attributive clauses.As used as relative adverbs,it can introduce adverbial clauses of time,adverbial clauses of cause,adverbial clauses of manner,adverbial clauses of comparison,adverbial clauses of concession and parenthesis.