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Историческую версию Perfect English Grammar можно получить на Android
содержит часто задаваемые вопросы и изучающие языки всех возрастов и рода
Since you’re reading this, there’s a good chance you or someone you know needs help with their language. To help as many people as possible, I’ve written this app to be useful for a wide range of readers, writers, and learners: junior high, high school, and college students; graduate students who speak English as a second (or even third) language; or business professionals and community leaders who need a refresher on grammar points they last thought about decades ago.
This app does not cover all of English grammar. Instead, it contains frequently asked questions and language learners of all ages and kinds. It also includes facts that were eye-openers for me when I first started on my journey of communicating better. I hope this app will be your trusted companion as you express all that you have to say.