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.（5）How much do you know about the traffic in New York?
（6）.Do you have any ideas about the streets there?
3.Use the Present Perfect Tense with for and since
（1）.You have been in New York for a long time
（2）.The city has improved a lot since i came here a few years ago.
二．Teaching Plan 教学方案
Step 1 Review 第一步 引导学生用现在完成时谈论北京的变化，引出for和since的用法及部分短语，并导入新课。
用多媒体或图片展示几组北京过去和现在的画面，让学生观看、讨论北京的变化，引出纽约的变化。
Have you ever been to Beijing?
How much do you know about Beijing?
Do you have any ideas about Beijing?
T: Beijing has changed a lot. Who can describe it?出示过去北京城的图片
S1: The houses were small and the streets were narrow in the past.
T: You’re right. Who can describe this picture?
出示现在北京城的图片。
S2: There are lots of tall buildings in Beijing now.
S3: More ring roads.
S4: People can enjoy more sorts of leisure activities.…
T: Well done! The changes have taken place not only in China but also in the world. Now let’s listen to the tape to know about the changes in New York.
Step 2. 第二步。Presentation
1.听录音后，回答教师的问题。
Is New York a wonderful place to live?
Yes, it is.
Has Helen ever been to New York?
No, she hasn't.
T:Is New York a dangerous place now?
S3: No, it isn’t. It was dangerous in the past.
T:Is New York a wonderful place to live now?
S4: Yes, it is.
T: Good. As a matter of fact, there are beautiful parks, good schools, famous museums and excellent restaurants now. And you can go to plays, concerts and operas every day if you like. If you want to know more about New York, you must come for a visit there. Do you want to go there?