1. 阿姆斯特丹人多年来享受骑自行车的益处。

2. 的确，多亏人们献计献策，就像20世纪60年代的自行车迷们那样，世界各地许多人多年以来能在市中心享受没有汽车的环境。

3. 你一直在雨中骑自行车吗？

4. 过去的两个月里我没有开车。

5. 阿姆斯特丹市中心车辆不多，因为当地人和旅游者一直骑白色自行车。

Keys:

1. People have been enjoying the benefits of cycling in Amsterdam for years.

2. Indeed, thanks to the good ideas of lots of people, like the cycling fans in the 1960s, many people around the world have been enjoying city centre streets without cars for many years.

3. Have you been cycling in the rain?

4. I haven't been using the car for the last two months.

5. There is already less traffic in central Amsterdam, because both locals and tourists have been using the white bikes.

Step III Presentation

Activity one: The structure of Present Perfect Continuous

T: Read the sentences above and work out what the italic words are about.

Let the Ss read the sentences above and know that Present Perfect Continuous refers to an action that is still going on.

T: Turn to page 37 and use the dialogues in Exercise 4 to complete the table.

The Ss read the dialogues and fill in correct words. Then let them check the answers with each other.

Activity two: Understand the form of Present Perfect Continuous

T: Read the sentences from above and decide what we use to express a continuous behavior.

Ss: Look at this table.

Present Perfect Continuous Affirmative Negative Question