The bus system and train system are really good.

　　公共交通系统和铁路系统非常发达。

　　A So the traffic situation in London is a little better than in Beijing?

　　A 这么说伦敦的交通比北京的状况要好一些了？

　　B Yes, it is better. London has a bigger underground, or metro system.

　　B 是的，好一些。伦敦的地铁系统要大一些。

　　A That must help. Less people in cars.

　　A 那会缓解交通问题。开车的人少了。

　　B Yes. And the bus system and train system are really good.

　　B 是的。公共交通系统和铁路系统非常发达。

　　A So I guess you have fewer cars, less traffic . . . and less pollution than Beijing.

　　A 所以我想你们的私家车少，车辆少…污染比北京小。

　　B Yes. I think Beijing needs more buses, trains and metro trains.

　　B 是的。我想北京需要更多的公共汽车、火车和地铁。

　　Notes 注释

　　1 Remember you can use comparative adjectives to compare things, e.g. The traffic situation is better in London than in Beijing. / The traffic situation is better in London than in Beijing; London has a bigger metro system. / London has a bigger metro system; You have fewer cars, less traffic and less pollution. / You have fewer cars, less traffic and less pollution.

　　记住你怎样用形容词的比较级比较不同的事物，例如：The traffic situation is better in London than Beijing /伦敦的交通状况要比北京好一些; London has a bigger metro system. /伦敦的地铁系统要大一些; You have fewer cars, less traffic and less pollution. /你们的私家车少，车辆少，污染小。

　　2 When you want to describe a need, use need/need or needs/needs, e.g. Beijing needs more buses and trains. / Beijing needs more buses and trains.

　　当你想描述某种需要时，用need/需要 或者 needs/需要,例如：Beijing needs more buses and trains. /北京需要更多的公共汽车和火车。

Key phrases and sentences   So the traffic situation in London is a little better than in Beijing? Yes, it is better.  London has a bigger underground, or metrosystem. That must help.  Less people in cars. Yes.  And the bus system and train system are really good. So I guess you have fewer cars, less traffic . . . and less pollution than Beijing. Yes.  I think Beijing needs more buses, trains and metro trains.

重要的短语和句子   这么说伦敦的交通状况要比北京好一些了？ 是的，好一些。 伦敦的地铁系统要大一些。 那会缓解交通问题。开车的人少了。 是的。公共交通系统和铁路系统非常发达。 所以我想你们的私家车少，车辆少…污染比北京小。 是的。我想北京需要更多的公共汽车、火车和地铁。