By default Google Play is configured to display reviews only in my native language (not english). But there are a lot of reviews in other languages, especially in english and I want to see them also. As a workaround I can change language to english but it is not perfect solution. Can I see reviews both in my native language and in english?
Not with the regular Playstore app, AFAIK. If you want to do so using an app, you might want to take a look at Market Comments Reader. From within the web browser, AndroidPIT allows to show comments of all languages at once, i.e. without selecting each language separately.