Question

is the sentence Yo sabía quién era el presidente imperfect tense and how do you know?

Answer 1

are you trying to say you knew the president??

Answer 2

The sentence "I knew who the president was" is not in the imperfect tense. It is actually in the past simple tense. I can tell this because the verb "knew" is the past tense of "know." The imperfect tense is used to describe ongoing or repeated actions in the past, while the past simple tense describes a single completed action in the past.

Answer 3

the sentence in english is I knew who the president was, but is it in preterite tense or imperfect tense and how do you know?