我正舒服地坐在沙发上看电视,突然所有的灯都灭了,一切都变得寂静。

I was sitting comfortably on the couch watching TV when suddenly all the lights went out, [and] everything became silent.

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I was sitting comfortably on the couch watching TV when suddenly all the lights went out, [and] everything became silent.

comfortably 是形容词 comfortable(舒适的)的副词形式,表示"舒适地、舒服地",描述坐着的状态。 and 是连词,在这里连接两个并列的句子成分,表示"并且、而且"的意思,用于连接前后两个同时发生的动作或状态。

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