Tham khảo tài liệu 'sentce corres 2', ngoại ngữ, anh ngữ phổ thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | CHAPTER 9 Verb Forms Verbs are the heart of a sentence. They express the action or state of being of the subject and indicate what the subject is doing thinking or feeling She yelled out the window. action I am happy to be here. state of being We feel very lucky to be alive. state of being I should ask Winston what he thinks. action Verbs have five basic forms infinitive present tense present participle past tense and past participle. These five forms are used with other helping verbs to form other verb tenses including the future conditional and subjunctive mood see pages 150-151 . Infinitive base the base form of the verb plus the word to. to go to be to dream to admire 143 --------------------------------------- VERB FORMS -------------------------------------------- To indicate tenses of regular verbs when the action of the verb did occur is occurring or will occur use the base form of the verb and add the appropriate tense endings. Present tense the verb form that expresses what is happening now. I am sorry you do not play tennis. Jessica enjoys yoga every morning. The present tense of regular verbs is formed as follows SINGULAR PLURAL first person I we base form believe I believe base form believe we believe second person you base form believe you believe base form believe you believe third person he she it they base form -s -es believes she believes he believes base form believe they believe Present participle the verb form that describes what is happening now. It ends in -ing and is accompanied by a helping verb such as is. Jessica is doing a difficult yoga pose. The leaves are falling from the trees. NOTE Words that end in -ing don t always function as verbs. Sometimes they act as nouns called gerunds. They can also function as adjectives called participial phrases. Present participle verb He is loading the boxes into the car. Gerund noun This parking area is for loading only. Participial phrase adjective The loading dock is littered with paper. You will .
