The world's best-selling grammar series for learners of English. A reference and practice book for learners of English at advanced (C1-C2) level. Perfect for self-study, but also ideal for ...
Connecting grammar and writing for academic success and beyond. A four-level course to help students learn the most useful grammar and academic writing, perfect for grammar classes with a strong focus ...
We use the present perfect continuous to talk about an activity that started in the past and is continuing now or has recently finished. Some verbs are almost never used in the present perfect ...