重点句型：
（1）It’s two years since Mr. and Mrs. Green came to China.
= Mr. and Mrs. Green have been in China for two years,
(1)They're the birthplaces of Chinese culture．她们是中国文化的发源地
(2)…，I can fetch you Guide to China．It’s a book which introduces China in detail．
(3)Tibet is in the southwest of China，isn't it?
(4)…they are well worth visiting．
(5)That’s the most fantastic place that I have ever heard of．
(6)The scenery is so attractive that visitors often lose themselves in it．
(7)Hong Kong is known as the Oriental Pearl and Shopping Heaven．
(8)People's way of life in the north is quite different from that in the south．
(9)…，but people in the south travel not only by land but also by water．