He failed to submit the report on time, and as a consequence, he lost his job.

as 在这里是连词，表示"作为"或"因为"的关系。 a 是不定冠词，表示"一个"或"某种"的意思。 consequence 是名词，来自拉丁语 consequentia，意思是"结果"或"后果"。 as a consequence 是一个固定短语，意思是"因此"或"结果"，用来表示前因后果的关系。