do Learn Unstarted Summary The Czech translation for “by” is do. Examples of "by" in use There are 2 examples of the Czech word for "by" being used: Recording English Czech Learn I’ll be back by nine. Vrátím se do devíti. Learn The assignments must be completed by the end of the week. Úkoly musí být hotové do konce týdne. Learn Practice Lesson "by" Practice (2) Lesson Learn Lesson words by etc. View all lesson words Lesson phrases I’ll be back by nine. etc. View all lesson phrases Acknowledgements Audio Google text-to-speech