Cleft sentence ( It  was yesterday that...)

Cleft sentence ( It was yesterday that…)

The construction It is... that is known as a cleft sentence, and it is often used to emphasize a specific part of a sentence. Cleft sentences are typically formed by splitting a sentence into two parts: the clause before it is and the clause after that. Here's the basic structure of a cleft sentence: It is [clause before it is] that [clause after that].

The Future Perfect tense

The Future Perfect tense

We use the Future Perfect to talk about an action that will be completed by a certain point in the future.   Example:  By the time you come back, I will have finished the report.