This is a quick overview of points of grammar that are particularly relevant to job applications. If you need more help with grammar, you may find the following books useful:
- Raymond Murphy, English Grammar in Use, Cambridge University Press/Klett
- Michael Swan, Practical English Usage, Oxford University Press/Cornelsen
- Michael Swan, Catherine Walter, How English Works, Oxford University Press
These and other grammar books for learners should be available in your university library.