雅思写作辅导：英语写作的11条规则

　　1. To join two independent clauses, use a comma followed by a conjunction, a semicolon alone, or a semicolon followed by a sentence modifier.

　　2. Use commas to bracket nonrestrictive phrases, which are not essential to the sentences meaning.

　　3. Do not use commas to bracket phrases that are essential to a sentences meaning.

　　4. When beginning a sentence with an introductory phrase, include a comma.

　　5. To indicate possession, end a singular noun with an apostrophe followed by an s. Otherwise, the nouns form seems plural.

　　6. Use proper punctuation to integrate a quotation into a sentence. If the introductory material is an independent clause, add the quotation after a colon. If the introductory material ends in thinks, saying, or some other verb indicating expression, use a comma.

　　7. Make the subject and verb agree with each other, not with a word that comes between them.

　　8. Be sure that a pronoun, a participial phrase, or an appositive refers clearly to the proper subject.

　　9. Use parallel construction to make a strong point and create a smooth flow.

　　10. Use the active voice unless you specifically need to use the passive.

　　11. Omit unnecessary words.