C教案及板书设计

Unit4 Then and now 一、教学目标

知识与技能：通过阅读对三种时态一般过去时、一般现在时、一般将来时能更好的理解并区分。

过程与方法：通过自主探究和小组合作让学生在轻松的氛围中理解故事内容，对比三种时态。

情感与态度：培养学生热爱自然保护环境的意识。

二、教学重点及难点

理解一般现在时、一般过去时、一般将来时的构成及区别。

三、教学准备

PPT，单词卡片，三种时态图

四、教学过程

Step1.Greeting and lead-in T：How are you? How did you come to school? S: I’m fine. I came to school by car. T:Look!This is my family photo.Its took by my father 15 years age.I was very younger.Now I am older.In 2050,I will be 50 years old.Time flys quickly. T:Do you want to know what happened in the past and what will happen in the future.Let’s see a movie. Step2.Watch a movie.

Step3.Match the pictures. ①

组织学生观察第一组图片，小组讨论第一组图片的内容，并区分过去时、现在时、将来时，了解人类生活方式的变化，并引导小组围绕图片运用过去时、现在时和将来时进行对话。

②

将课文图片第一组顺序打乱，发给每小组，并组织学生排序，然后小组派代表介绍图片内容，介绍地球的变化，可以找自己的组员饰演tree，river，building bird。如：Many years ago， there are many green trees and clean rivers. Our hometown is beautiful. Now，

there are more and more buildings. Then more and more green trees are disappearing. So，…

第二、三组图片也采用第一组图片的方法进行学习。

③

最后要呼吁学生爱护花草树木，爱护动植物，爱护大自然。

Step4.Grammar practice

时态

一般现在时

频度副词：

1、主语+系动词1、 be 放1、 be + not

例：always, usually, be( am, is, 主语前

2、

动词前加

often,sometimes, are) 2、

主语前don’t 或every day(week、2、主语+行为动词加do doesn’t (动Sunday …)、never 原形；

或does 词还原) 3、主语为第三人称(动词还单数时V + s, 原) 或

es 标志词

谓语形式

疑问形式

否定式

一般将来时

一般过去时

1、 tomorrow, the next day,this evening this afternoon, soon 2、 the day after tomorrow, next ～(week,term,month,year…)

1、 in +未到年份，如in 2015

1、yesterday, last～

(week,year,month…)the day before yesterday,just now等

2、two years ago/ at that time/ before等

3、in +过去年份

1、

主语+be going to + V 原形

2、

主语+will + V 原形

3、 go, come, leave 等用现在进行时表示将来

4、 want 用一般现在时表将来

be 或will 放主语前

be 或

will 后加

not

will not = won’t

主语+动词be 的过1、 was / 1、 was/ were 去时（was, were）

were + not

2、主语+行为动词放主语2、

动词前加的过去式

前

didn’t (动2、

主语前词还原) 加did (动词还原) 用括号内动词的适当形式填空。

1.He often ________(have) dinner at home. 2.We _______(not watch) TV on Monday. 3.Nick _______(not go) to the zoo on Sunday. 4.______ they ________(like) the World Cup? 5.What _______they often _______(do) on Saturdays? 6._______ your parents _______(read) newspapers every day? 7.The girl _______(teach) us English on Sundays. 8.She and I ________(take) a walk together every evening. 9.There ________(be) some water in the bottle. 五、板书设计

Unit4 Then and now 一般过去时 一般现在时 一般将来时 Cavemen often ate Now there are many In 2050,there will be house raw meat. things help you cook. Robots.