town何时可以省略冠词

town何时可以省略冠词
 
■特指某座城镇时，其前要用定冠词。如：
The town lies among the mountains. 这座城镇位于众山之中。http://yingyu.chazidian.com
All approaches to the town were blocked. 所有通向这座城市的道路都被封锁了。
■在讲到主语或说话人自己的城镇时，town前面的the可以省略：
Mary has also gone to town. 玛丽也进城了。
We go to town sometimes to buy clothes. 我们有时进城去买衣服。
We were in town last Monday. 上星期一我们在城里。
I returned to town by the midnight express train. 我坐午夜快车回到城里。
I’ve been down town all morning. 整个早上我都在城里（市中心区）。
I’m going into town to buy a dress. 我进城去买一件衣服。
■有时也可用冠词：
After tea I wandered about the town. 吃过下午茶我在城里转了转。
Then they took a bus into the town. 于是他们搭公共汽车进城。