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教 学 教 程教 师 活 动学生活动Step 1.Greetings.
设计意图：让学生做好上课的准备。
Step 2. Lead in.
设计意图：与学生进行一个简短的对话，进入本课主题。
Shen Wei used to be a vagrant(流浪汉) . He made his living by picking up rubbish.Shen Wei is famous for his profound(渊博的)
knowledge and concept (理念)of sorting out the rubbish. He is a web star(网红) now .What will Shen Wei do in the future ?
Step 3. Show the pictures.
Show the students two pictures to let them know the Present Indefinite Tense,the Past Indefinite Tense and the Future Indefinite Tense.
设计意图：通过展示图片让学生理解3种时态的含义。
Step4.
Read the sentences and answer the following the table:
1、Shen Wei used to be a vagrant(流浪汉) .He made his living by picking up rubbish.2、Shen Wei is famous for his profound(渊博的)knowledge and concept (理念)of sorting out the rubbish. He is a web star(网红) now .
设计意图：让学生辨析一般现在时和一般过去时。
Step5 Read the sentences and complete the following the table:
Look ,Shen Wei is picking up rubbish. Shen Wei was picking up the rubbish at this time yesterday .
设计意图：让学生辨析现在进行时和过去进行时
Step6 Read the sentences and answer the following the table:
Shen Wei has made a contribution to protecting the environment .
Shen Wei said that he had sorted out the rubbish for twenty-six years .
设计意图：让学生辨析现在完成时和过去完成时。
Step7 Read the sentences and answer the following the table:
What will Shen Wei do in the future ?
.Shen Wei said that he had sorted out the rubbish for twenty-six years .
设计意图：让学生辨析现在一般将来时时和过去将来时。
Step8拓展延伸：
一般过去时与现在完成时之比较
一般过去时表示过去某时发生的动作或单纯叙述过去的事情，强调动作，和现在不发生关系。而现在完成时表示过去发生的某一动作对现在造成的影响或结果，强调的是现在的情况。
现在完成时表示过去已经开始，持续到现在,也许还会持续下去的动作或状态。可以和表示延续的时间状语连用。 如for、since 等引导的时间状语。（注意：句中谓语动词要用延续性动词）
2、现在进行时表示安排和计划或即将发生的动作。
go, come, leave, start, arrive, stay, fly, land, take off等动词可用现在进行时表示安排和计划或即将发生的动作。