作业帮几道单选（希望老师能详细解答原因）
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/17 03:28:35
1.Since you ______the task , you should stick to until it is finished. A.accepted B.have accepted C.accept D.had accepted 2.If you_______the last paragraph of your essay,it sounds much better. A.put out B.leave out C.point out D.make out 3.______the quality of their service, the workers in the hotel spent a lot of time learning English. A.Improving B.Improve C.To improve D.Having improved 老师，第三题的逗号对选择究竟有无影响？
解题思路： 如下
解题过程：
1.Since you ______the task , you should stick to until it is finished. A.accepted B.have accepted C.accept D.had accepted 选B。since引导原因状语从句，意为“既然”，根据句意可知，“接受任务”的动作已经发生，并对现在造成影响，故用现在完成时。 2.If you_______the last paragraph of your essay,it sounds much better. A.put out B.leave out C.point out D.make out 选B。leave out 忽略 ; 遗漏 3.______the quality of their service, the workers in the hotel spent a lot of time learning English. A.Improving B.Improve C.To improve D.Having improved 选C。动词不定式做目的状语，表示“为了”之意。逗号表示前一分句是主句的一部分，需要填非谓语动词。
最终答案：略
解题过程：
1.Since you ______the task , you should stick to until it is finished. A.accepted B.have accepted C.accept D.had accepted 选B。since引导原因状语从句，意为“既然”，根据句意可知，“接受任务”的动作已经发生，并对现在造成影响，故用现在完成时。 2.If you_______the last paragraph of your essay,it sounds much better. A.put out B.leave out C.point out D.make out 选B。leave out 忽略 ; 遗漏 3.______the quality of their service, the workers in the hotel spent a lot of time learning English. A.Improving B.Improve C.To improve D.Having improved 选C。动词不定式做目的状语，表示“为了”之意。逗号表示前一分句是主句的一部分，需要填非谓语动词。
最终答案：略