as与which引导非限定性定语从句用法浅谈（Elementary introduction to the use of non restrictive attributive clauses by as and which）.docVIP

as与which引导非限定性定语从句用法浅谈（Elementary introduction to the use of non restrictive attributive clauses by as and which） As and which guide the non restrictive attributive clause usage on as and which guidance on the usage of non restrictive attributive clauses Back Over the years from the NMET test, the attributive clause is one of the compulsory grammar. Especially in as and which Non restrictive attributive clauses of the subject, students are at a loss what to do, the author in the usual teaching, collecting some of this material, in order to master the use of the use of test summary and examples. The first, as and which can be expressed in the main sense of coherence in the clause as the subject, or as the object of a transitive verb, such as, The He married her, which / as was natural. The I was very useful to him, which as he realized. But the following conditions as and which are generally not interchangeable: The 1.as can refer to the facts or circumstances mentioned above, so as can be at the beginning and at the end of the sentence, can also be inserted in the main clause, while which refers to the facts or circumstances mentioned above, generally placed in others (sometimes used as as): The As our teacher points out, that book is of benefit to everyone. The Heat is a form of energy, as is known to all of us. The This machine as might, be expected, has stopped operating. The 2.as contains, in accordance with the meaning, just as as, generally used in affirmative sentences, while which is used for containing the meaning of negative sentences, such as: The He failed in the exam again, as was expected. He failed in the exam Again, which was unexpected. 3. when the attributive clause modifies the main clause is the verb object, such as the commonly used as: The Jack was admitted into the University, as we had expected. The 4. of the following fixed structure, generally can not use which, such as: The as has been said before as mentioned before The as often happens