Lots of people in urban areas are now concerned about the quality of the air they________(breath).breath为什么不是:breathing?

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Lots of people in urban areas are now concerned about the quality of the air they________(breath).breath为什么不是:breathing?
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Lots of people in urban areas are now concerned about the quality of the air they________(breath).breath为什么不是:breathing?
Lots of people in urban areas are now concerned about the quality of the air they________(breath).
breath
为什么不是:breathing?

Lots of people in urban areas are now concerned about the quality of the air they________(breath).breath为什么不是:breathing?
这句话的翻译是:大城市里面的人们现在关心的是他们呼吸的空气的质量.breath是名词.
注意:now及这句话的意思说明时态是一般现在时,而非现在进行时,所以应该用breathe,一般现在时,说明这种事实.你想的breathing,考虑成了现在进行时,注意他们时刻都在呼吸空气,而不仅仅是现在,所以用动词breathe.

答案错了,应该是breathe,这是动词
如果用进行时的话,那就应该是 are breathing

这里是定语从句 the air 作先行词 that 引导定从作宾语可省去
the quality of the air that they__breath___(breath).
这句话的意思说明时态是一般现在时,而非现在进行时 所以应用动词原形

答案应该是:breathe
breath 是名词型。此句中,(that)they breathe是修饰air的定语从句, 应该用动词型

这是一个定语从句,先行词是air ,省略了连接词that ,意思是他们呼吸的空气,句子中要用动词的谓语形式,而breathing 相当于一名词,又因为主语是复数,且全句为一般现在时所以用breath. 如果觉得明白请采纳啊