任务一:请在横线处写出动词的正确形式。
任务二:根据短文内容,分析现在进行时的构成,并完成表格,总结现在进行时的用法及时间标志词。


任务三:根据短文内容,回答下列问题。
1. What are the vendors selling on Harbin's Central Street?

2. Why do tourists take photos of the buildings on the street?

3. What is the young guide doing for the visitors?

4. Do you think Harbin's Central Street is a good place to visit? Why or why not?

任务二 现在进行时构成表格填写
1. 肯定句部分：
结构横线依次填写：主语；am / is / are；动词的现在分词(doing)
补充例句：The tourists are walking happily on the street.
2. 否定句部分：
结构横线依次填写：主语；am / is / are；not；动词的现在分词(doing)
例句：The tourists are not running in the street.
3. 一般疑问句部分：
结构横线依次填写：Am / Is / Are；主语；动词的现在分词(doing)
肯定答语横线：主语；am / is / are
否定答语横线：主语；am / is / are；not
现在进行时用法表格填写
1. 表示此时此刻正在进行的动作 对应例句：Many visitors are enjoying the warm sunshine now.
2. 表示现阶段正在进行的动作 对应例句：Lots of visitors are coming to Harbin for the ice and snow tour these days.
任务三 问题回答
1. They are selling all kinds of local special snacks and small characteristic souvenirs.
2. Because the buildings on the street are very beautiful and have special Russian architectural features.
3. He is introducing the history and interesting stories of Harbin's Central Street for the visitors.
4. Yes, I think it is a very good place to visit. Because we can taste delicious local food, see beautiful old buildings and experience the special local culture there, we will have a great time.

本题考查七年级核心语法现在进行时的结构、用法，同时结合哈尔滨中央大街的主题场景完成相关问答：
1. 现在进行时表示此时此刻或者现阶段正在发生的动作，基础构成规则为“be动词(am/is/are)+动词现在分词”，不同句式的变形都围绕be动词调整即可。
2. 任务三的问题结合哈尔滨中央大街的实际特点和对应主题短文的常见内容作答即可。
注：本题未给出任务一的具体填空题干和依托的完整阅读短文，以下为符合七年级课标要求的标准作答内容。