A Complete Course Of English Grammar [repack] -

Emphasizes the duration or ongoing nature of an action that started in the past and continues now. Formula: Subject + have/has been + Verb-ing.

: Establishes sequence, showing an action that happened before another past action. ( The train had already left when I reached the station. ) a complete course of english grammar

English verbs change form to indicate when an action happens. Emphasizes the duration or ongoing nature of an

: Links two independent, closely related clauses without using a coordinating conjunction. ( The presentation was long; however, it was incredibly informative. ) a complete course of english grammar

Action words or states of being (e.g., run, think, is, become ).