Tham khảo tài liệu 'writting toefl detail 6', ngoại ngữ, anh ngữ phổ thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | STRUCTURE 67 Practice Circle the correct modifier in each sentence. Find the answers on page 83. 18. The judge looked skeptical skeptically at the attorney. 19. Pasta does not taste as good well if it is overcooked. 20. Pleasant Lake is the best better trout lake around. ACTION WORDS Verbs form the heart of a sentence they express the action or state of being of the subject. The tense of the verb tells readers when the action happens happened or will happen. Verbs have five basic forms 1. The infinitive is the base form of the verb plus the word to. to swim to hope to be 2. The present tense expresses action that happens now or happens routinely. The baby smiles a lot. 3. The present participle describes what is happening now. A helping verb am is are precedes the -ing form of the verb. The baby is smiling again. 4. The past tense shows an action that happened in the past. School officials warned the students last fall. 5. The past participle expresses an action that happened in the past. It uses a helping verb such as has have or had. The reporter has followed the story since it broke. REGULAR VERBS Regular verbs follow a standard set of rules for forming the present participle past tense and past participle forms. The 68 TOEFL EXAM ESSENTIALS present participle is formed by adding -ing. The past and past participle are formed by adding -ed. If the verb ends with the letter e just add d. If the verb ends with the letter y for the past tense change they to an i and add -ed. Here are some examples Present Present Participle talk talking exercise exercising multiply multiplying notice noticing Past talked exercised multiplied noticed Past Participle talked exercised multiplied noticed IRREGULAR VERBS Approximately 150 verbs in English are irregular. They do not follow the standard rules for changing tense. Irregular verbs fall into three categories irregular verbs with the same past and past participle forms irregular verbs with three distinct forms irregular verbs .
