I recently found this useful lesson in grammar from Pulitzer Prize winner William Safire.
It is worth remembering these rules when you write a CV and cover letter.
HOW TO AVOID GRAMMATICAL MISTAKES
1. Verbs has to agree with their subjects.
2. Prepositions are not words to end sentences with.
3. And don’t start a sentence with a conjunction.
4. It is wrong to ever split an infinitive.
5. Avoid clichés like the plague.
6. Also, always avoid annoying alliteration.
7. Be more or less specific.
8. Parenthetical remarks (however relevant) are (usually) unnecessary.
9. No sentence fragments.
10. Contractions aren’t necessary, and shouldn’t be used.
11. One should never generalise.
12. Don’t use no double negatives.
13. Eschew ampersands & abbreviations etc.
14. Eliminate commas, that are not necessary.
15. Never use a big word when a diminutive one would suffice.
16. Kill all exclamations!!
17. Use words correctly, irregardless of how others use them.
18. Use the apostrophe in it’s proper place and omit it when its not needed.
19. Puns are for children, not for groan readers.
20. Proofread carefully to see if you any words out.