Topic sentence要点
Convenience
Employment
Economy
扩展：
What
How
办法
修饰性句子，A， 插入语， brings convenience to B under …
成句
For a community whose residents have to go to the town for daily shopping, a shopping center, without question, is a time saver and gas saver. Thousands of employers are expected to work for the proposed shopping
center, which is a good news for unemployed local citizens as well as for stranded government.
Great amount of turnover will contribute to the local economy making it a more prosperous place thus all residents benefit.
Topic sentence要点
Environment
Safety
How
What
Noise and light pollution are among the first undesirable effects a shopping center could bring to a community from which the students and senior citizens have to suffer a lot.
Safety problems always come together (with) with the large population crowding into an area, while construction and operation of a shopping center can not avoid this.
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