为什么这些动词后面要加ing?(英语)1.I'm visiting my friends.2.He isn't writing a postcard.3.Is she enjoying her visit?4.Are they buying postcards?这些句子是现在进行时吗?如果是,从哪里看得出来?如果不是,是根据什
来源:学生作业帮助网 编辑:作业帮 时间:2024/10/20 07:13:59
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