Identify the tense of the sentence "He has worked as a teacher for 10 years."

The tense of the sentence "He has worked as a teacher for 10 years" is Present Perfect. This tense is used to indicate an action that began in the past and has relevance or continuation into the present.

In this case, the use of "has worked" signifies that the person started working as a teacher 10 years ago and is still in that role or the experience is relevant to the present moment. The structure "has" + past participle ("worked") is characteristic of the Present Perfect tense. This construction effectively highlights the duration of the action, showcasing that it is ongoing and has implications in the current context, which aligns with the idea of perfect aspect in English grammar.

Understanding this aspect of the Present Perfect tense is crucial as it often contrasts with other tenses that might represent completed actions without current relevance, such as Past Simple, or ongoing actions, such as Present Continuous.