I arrived home a moment ago. I have been at home for a moment

1. I arrived home a moment ago. • I have been at home for a moment • I have been at home since a moment ago. • A moment has passed since I arrived home. • It’s a moment since I arrived home.

2. 2. Mary borrowed this book last week. Mary _____ ______ this book ______ last week. ____ ____ _____ _____ _____ Mary borrowed this book. 3. He has had a new car since the year before last. ____ _____ _____ _____ he ______ a new car. He _____ a new car _____ _____ _____ _____. has kept since A week has passed since It’s two years since bought bought the year before last

3. 4. 电影已经开始十分钟了。 5. 自从1991，他祖父就去世了。 6. 自从我妈妈感冒一个星期已经过去了。 The film has been onforten minutes. His grandfather has been deadsince 1991. A week has passedsince my mother caught a cold.

4. 7.那个老人离开家乡许多年了。 8.自去年，格林一家就搬到无锡了。 The old man has been away from his hometown for many years. The Greens have been in Wuxi since last year.

5. green hills around • go to town by bicycle or on foot • a good environment • fresh air • cause many problems • a new tourist attraction • a modern life

6. 8. Things have changed a lot. 9. be in use be in service 10. as good as before 11.bing many good advantages 12.less development