Explain the meaning of the tag questions.
Step 4 Presentation
Tell the Ss to look at the map if the world(See page 67 of SB2). Ask What countries can you see? Help the Ss to answer.
Ask a Student to come to the front. Point to him and say This is Bruce. He’s from Australia. Present this dialogue (help the student to answer)
T: Your name’s Bruce, isn’t it?
B: Yes, it is.
T: You’re from Australia, aren’t you?
www.89xue.com B: Yes, I am.
Ask more Ss to come to the front. (Sue from England; Li Ning from China, etc.) Ask them similar questions, then ask the class: He’s from China, isn’t he? Etc.
Get the Ss to give negative answers too: She’s from the USA, isn’t she?------No, she isn’t1 Get a student to ask the questions, then the Ss can ask and answer (both in affirmative and negative ways ) in pairs.
Step 5 Explanation
1. It’s very cold today, isn’t it?
在称述句后加上一个意思与之相反的简短问句，这种句子叫反意疑问句, 表示说话人对所陈述的事情不肯定，想通过对方的回答来判断。 构成分为两类：
（1）前一部分为肯定式，后一部分为否定式。
（2）前一部分为否定式，后一部分为肯定式。两部分的时态要一致。
对于第一种句型的回答与一般疑问句的回答方式一样。对于第二种句型的回答方法则同中文表达方法不同，关于回答 "Yes"，还是 "No" ,英语取决于后面的答句是肯定还是否定，后面的答句是肯定的句子，选用 "Yes" ,后面的答句是否定的句子，
2 why don’t you ? "你为何不？” 表示一种建议，简略的说法为：why not+动词原形。