There is nothing wrong with mixing tenses in a sentence if the action is intended to take place at different times.

Question

Quizplus · Accepted Answer

Mixing tenses can be acceptable if the intended meaning is to convey actions taking place at different times. For example, "I was studying yesterday and will continue tomorrow" uses past and future tenses to differentiate between when the action occurred and when it will happen again. However, it is important to be consistent with tense usage within a sentence or paragraph for clarity and coherence.

There Is Nothing Wrong with Mixing Tenses in a Sentence