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例:The lesson________,the students ran out of the classroom,laughing and talking.A.finishing B.being finished C.finished D.had been finished解答本题,我们可以用排除法尝试着从以下几点入手:Step 1:辨析“谓语”与“非谓语”。根据句式特点,逗号不连接两个句子,也就是说,所设空格处不可能是谓语动词,我们只能选择非谓语动词,因此排除D项。Step 2:找出非谓语动词的逻辑主语,确定非谓语动词与其自身的主语在逻辑关系上是主动关系
Example: The lesson ________, the students ran out of the classroom, laughing and talking. A.finishing B.being finished C.finished D.had been finished Answer this question, we can use the exclusion method to try from the following points: Step 1 : Discrimination “predicate ” and “non-predicate ”. According to the sentence features, the comma does not connect the two sentences, that is, the space can not set the predicate verb, we can only choose non-predicate verb, thus excluding the D item. Step 2: Find out the logical subject of the non-predicate verb, and confirm that the non-predicate verb is logically related to its own subject