Englische Grammatik | English Grammar
A grammar for everyone who wants to improve her/his English skills. Clear structure, easy to understand, many practical examples.
Available here: Anaconda Verlag or Amazon.
Übungsbuch Teil 1
English to the point – contains explanations to all tenses + more than 1000 single exercise sentences – your daily manual (work with it). Available here: https://www.klhe.de/shop/
BIG 5 – most important grammar tenses