gasoline
汽油
/ˈɡæsəliːn/
a liquid obtained from petroleum that is used as fuel
Cars run on gasoline.
natural gas
天然气
/ˈnætʃrəl ɡæs/
gas that is found under the ground or the sea and that is used as a fuel
Natural gas heats many homes.
electric car
电动汽车
/ɪˈlektrɪk kɑːr/
an automobile powered by electricity, instead of gasoline
Electric cars do not pollute.
pollution
污染
/pəˈluːʃn/
substances that make air, water, soil, etc. dirty
coal
煤
/koʊl/
a hard black mineral that is found below the ground and burnt to produce heat
Burning coal causes pollution.
I commute 50 kilometers a day.
我每天上下班50公里。
I care about the environment.
我关注环境。
People charge electric cars at charging stations.
人们在充电站为电动汽车充电。
Natural gas powers all city buildings.
城市中所有的建筑物都用上了天然气。
We've stopped using coal.
我们已不用煤炭。
If we use electricity for cars, pollution decreases.
如果汽车用电作为动力,污染就会减轻。
使用第一条件陈述句来表示如果某一事情发生而将引起的结果。第一条件句由两个分句组成。一个使用 if + 一种条件,另一个是结果从句,句中动词为将来时态,使用情态动词 will。
If we buy an electric car, it will help the environment. 如果我们购买电动汽车,这样将会对环境有益。
If the city changes to natural gas, air quality will improve. 如果城市转用天然气,空气质量将会改善。
你也可以在结果从句中使用诸如 can 之类的情态动词。
If I save my money, I can buy an electric car next year. 如果我现在省钱,明年就能买一辆电动汽车。
词尾为 -ion 的单词重音中在倒数第二个音节上。听下面单词的发音,注意粗体标出的重读音节。
pollution 污染
transportation 交通
information 信息
tradition 传统
education 教育
transportation
运输
information
信息
tradition
传统
pollution
污染
education
教育
使用进行时表示一段时间内的变化。现在进行时是指现在一个正在发生的变化。
Opinions about electric cars are changing. 人们对电动汽车的看法正在改变。
现在完成进行时表示一个过去发生、现在仍在延续的变化。
Air quality has been improving for several years. 空气质量几年来一直在改善。
Get + 形容词常用于进行时,表示一段时间内的变化。其意义与 become 类似。
Commuting is getting more irritating. 通勤更加令人气愤了。
The city has been getting serious about using natural gas. 这座城市日益重视天然气的使用。
It's getting better all the time. 一直在变好。