现在完成时是初中英语中重要的语法内容之一,现将现在完成时常见用法归纳如下:一、概念:现在完成时表示过去发生的某一动作或行为对现在产生的影 Completion is now one of the most important grammar contents in junior high school English. We now summarize the common usages we have now when we finish. First, the concept: when it is completed, it means that an action or behavior that happened in the past has had an impact on the present.