Proofreading

1. articles -->a/an/the/some/any/singular/plural

2.subject-verb agreement-->e.g. I go /He goes

3.tenses-->active / passive

4.conjunction-->and (in addition, besides, furthermore, even, moreover)/but (although, however)/or (else, whereas) /when/since

5.preposition-->in/on/at/through/past/along/by

6.parts of speech-->noun/pronoun/adjective/adverb/verb/ conjunction

7.spelling

8.choice of vocabulary

9.phrasal verb

10. modal verbs-->shall/may/might/can/could/should/would/will

11. sentence structure --> subject +verb + object + adjunct (relative clause - who/ that)

12. present participle/ past participle ---> an interesting book, I'm interested in something