Question

翻译并详细说出句子结构

The vehicles such as cars and buses you ride in must pass tests to make sure they don't cause too much pollution.Thanks to this law,cars today release about half as many bad chemicals as cars did back in 1970.As a result,the air we breathe is cleaner than it once was.

Answer 1

车辆，诸如你们乘坐的轿车和公共汽车，必须通过测试，确保它们不会造成严重的污染。幸亏有了这条法律，现今的轿车排放的有害化学物质大约只有1970年时的一半。结果，我们呼吸的空气比以前洁净多了。
句子结构：此短文共3个句子。第一个句子的主句是The vehicles must pass tests。属于“主谓宾”结构。句中such as cars and buses 是同位语。you ride in 是定语从句，修饰 cars and buses。to make sure 是动词不定式作目的状语。they don't cause too much pollution 是 make sure 的宾语从句。第二个句子的主句是 cars today release about half as many bad chemicals. 属于“主谓宾”结构。句首的 thanks to this law 是原因状语，句末的 as cars did back in 1970 是比较状语从句。第三个句子的主句是 the air is cleaner. 属于“主系表”结构。we breath 是定语从句，修饰the air。句末的than it once was 是比较状语从句。

Answer 2

你们乘坐的车辆，如小车及巴士，都必须通过测试，以证明其不会造成过多污染。幸亏有了这项法律，现在汽车排放的有害物质只有1970年的汽车排放的一半。所以，我们呼吸到的空气比以前洁净。

Answer 3

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