WRITTEN EXPRESSION Tip

1. Learn about verb tense and agreement. Each verb must agree (in tense, form, number)
   with the noun it references.
2. Observe whether a noun is singular or plural. Learn the most common 'collective' nouns (such as money, or audience, or amount) that refer to a group or quantity of things or people.
3. Learn about pronouns. They must agree with the noun they replace in number, case, and gender.
4. Recognize when a pronoun is required in a sentence.
   Missing pronouns are a common error that may be seen in questions.
5. Learn also when a pronoun is not necessary.
   Extra pronouns are often added after a noun in a sentence, as they sometimes are in other languages.
6. Be wary of questions that use a noun in place of a verb form; many words look very close to one another.
7. Be wary of questions that confuse an adjective for an adverb, or a noun for an adjective.
8. Items in a list or series must be in the same grammatical form.
   This usually appears as a series of sentence elements separated by commas.
9. When a sentence indicates a quantity of a countable noun, you should use words like fewer or many or number.
10. When a sentence indicates a quantity of a noncountable noun, you should use words like much, amount, or less.
11. When comparing two items, use the -er ending for comparisons.
12. When comparing three or more items, use the -est ending for comparisons.

adapted from: http://www.testinfo.net/toefl/toefl-tips.htm