Tham khảo tài liệu 'the gmat writing skill 4', ngoại ngữ, anh ngữ phổ thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | ------------------------------ GUIDE TO EFFECTIVE WRITING ------------------------------------------ 5. Use parallel structure for any series of actions or items or the not only but also construction. 6. Make sure verbs agree in number with their subjects. 7. Keep verb tenses consistent. 8. Use the correct subject or object form of personal pronouns. Determine whether a pronoun is functioning as a subject or object in the sentence. 9. Use apostrophes with pronouns to show contraction only. Pronouns do not need apostrophes to show possession. 10. Use who for people that for things and which for nonessential clauses that do not refer to people. 11. Pronouns must agree in number and person with their antecedents. 12. Be consistent in pronoun point of view. 13. Use less for singular nouns representing quantity or degree. Use fewer for plural nouns. 14. Use good and bad to describe nouns and pronouns use well and badly to describe verbs. 15. In comparisons add -er or -est for short modifiers. For longer words use more most or less least before the modifier. 16. Do not use double comparisons or double negatives. 17. Use idioms correctly. Punctuation Punctuation marks are the symbols used to separate sentences express emotions and show relationships between objects and ideas. Correct punctuation clarifies meaning and adds drama and style to sentences. Poor punctuation on the other hand can confuse your readers and distort your intended meaning. For example take a look at the following two versions of the same sentence Don t bother Xavier. Don t bother Xavier. The same words are used but the two sentences have very different meanings because of punctuation. In the first sentence the comma indicates that the speaker is telling us not to bother Xavier. In the second sentence the speaker is telling Xavier not to bother. Here is another example of how punctuation can drastically affect meaning You should eat Zak so you can think clearly during your interview. Because this .