Danh mục ngữ pháp

Tenses

Verb tense forms, meanings and contrasts.

Past Perfect Continuous

Learn how to emphasize how long an activity continued before a past point. Understand the meaning, follow the form, study clear examples and avoid common mistakes.

Chủ đề

Future Perfect

Learn how to describe something that will be completed before a future deadline. Understand the meaning, follow the form, study clear examples and avoid common mistakes.