Grammar | LearnEnglish
https://learnenglish.britishcouncil.org/grammarPractise your English grammar with clear grammar explanations and practice exercises to test your understanding. All learners, whatever their level, have questions and doubts about grammar as they're learning English and this guide helps to explain the verb tenses and grammar rules in a clear and simple way. Choose your level, from beginner to advanced, and start learning today …
s apostrophe, genitive s - Englisch-Hilfen
https://www.englisch-hilfen.de/en/grammar/genitiv.htm2. Plural. Add the apostrophe ' to regular plural forms:. The girls' room is very nice.; The Smiths' car is black.; Add 's to irregular plural forms:. The children's books are over there.; Men's clothes are on the third floor.; If there are multiple nouns, add 's only to the last noun:. Peter and John's mother is a teacher.; If there are multiple nouns that refer to one person/thing – add 's ...