Present Perfect and Past Tenses
This section covers the formation and usage of present perfect simple, present perfect continuous, and past tenses including past continuous.
Definition: Present Perfect Simple connects past actions to the present moment.
Example: Time expressions include never, already, yet, still, just, ever, before.
Vocabulary: "For" is used to indicate a period, while "Since" specifies the starting point.
Highlight: The past continuous is used with "while" to describe two simultaneous actions in the past.




