初二下学期 Unit 20 Mainly revision
There comes the bus. We must go on the bus.
There goes the bell. Let’s go into the classroom.
词汇教学
开学以来,学生接触到的新单词大约有220个。平均每单元的词汇量在37个左右。如何有效地帮助学生记忆和运用所学的单词,是提高学生学习效果的一个重要环节。教材第80课第三部分介绍了运用字谜记忆单词的有趣方法。给学生一个规定的时间,看谁找的单词多。除此以外,教师还可以用一些别的方法帮助学生复习单词。
1.延伸(包括词性和组成短语)如:
care→careful→carefully→take care→take care of→lake good care of
cross→crossed→crossing→across→cross a bridge
take→taking→took→take sth. away→take sth. with sb. →take a seat
wait→waiting→waited→wait for→waiting room
2.快速反应(根据老师的要求,让学生抢答)如:
laugh laughed cry laugh at
stand stood standing sit stand in line (in a queue)
3.接龙游戏
教师先说一个单词,然后由学生接着传下去说,所说单词的第一个字母必须是上一个单词的最后一个字母。如:
garden→nice→empty→yourself→farm→must→tired…
老师可以预先准备一些小礼物,如橡皮、小刀、铅笔等。对优胜者给予一点奖励,提高他们的积极性。这种方法既能帮助他们记忆单词,又能训练他们快捷思维能力。
情态动词教学
前几个单元学生分别学习了情态动词can, may, must, mustn't, have to, need。在本单元第79课第二部分列为专项对上述情态动词进行复习。教师不必只枯燥无味地讲解其含义和语法功能,而应该把他们放在鲜活、生动的语言环境中去运用、体会。结合练习册第79课练习2,教师可以适当补充一些练习,帮助学生复习巩固。如:
根据句意选择适当的情态动词,用其适当的形式填空。
(can, may, must, have to, need)
1. ______we do eye exercises every day? Yes, we must.
2. ____you read the text in English? Yes, I can.
3. Li Ming ______reach the blackboard, when she was four years old. She was only 1.05 meter tall. She was too short to reach it.
4. _____ I use your new bike? No, you mustn't.
5. They got up too late. They ______ go to work by bus.
6. He ______stay here. He may go now.
7. The light is on my mother ______be home.
8. Could you wait for a while? No, I ______.
9. The apples are too high. He _____reach them.
10. Lucy's mother is ill in hospital. She ______ look after her.
keys: 1.Must 2.Can 3.couldn't 4.May 5.had to 6.needn't 7.must 8.can't 9.can't 10.has to
教学简单句的五种基本句型
在第15单元中学生已学过简单句的五种基本句型。学生如能识别简单句的五种基本句型,以后学习复合句、并列句等结构复杂的句子就不会感到太困难。本单元第80课的第一部分列出专项作为复习内容。教师在复习中不必过分强调句子成份和结构分析,而应把注意力放在理解句子的意义上。
教师可从本单元现成的对话和课文中挑出一些句子,让学生“对号入座”,增加学生英语句子的结构意识,以便更进一步理解英语句子结构与意义之间的关系。如:
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