背话题佳句：
1.With the development of economy, there are more and more private cars and traffic jams are getting heavier and heavier. As a result, traffic accidents occur frequently. Bear in mind that the traffic regulations are of great importance to road safety.
随着经济的发展，私人小汽车越来越多，交通拥堵越来越严重。因此，交通事故频频发生。记住，交通规则对道路安全至关重要。
2.The traffic issue is a hard nut to track.It not only affects our everyday life, but may also threaten people’s lives.
交通问题是一个棘手的问题。它不仅影响着我们的日常生活，而且还可能威胁到人们的生命。
3.As is known to us all, Mount Huashan is famous for its breathtaking cliffs and its unique characteristics.
正如大家 所知道的，华山以它险峻的悬崖和它独一无二的特征而出名。
4.It is aimed at stopping common traffic violations such as speeding, running a redlight, drunk driving, driving without license and so on.
其目的是阻止常见的交通违规，例如超速、闯红灯、酒后驾车以及无证驾驶等。
5.Located on Yangtze River, this beautiful old city hasa popular tourist attraction now.
坐落在长江之畔，这座美丽的古城现在成了受欢迎的旅游胜地。
背话题词块——有话可说
1.avoid traffic jams避免交通堵塞
2.traffic signal/light 交通信号灯
3.obey/observe traffic regulations 遵守交通规则
4.be aimed at 针对，旨在
5.be/ge tstuck in 被困在
7.hold up 耽搁，推迟
8.speed up 加速
9.slow down 放慢速度
10.set off 出发