Tham khảo tài liệu 'determining meaning from context 7', ngoại ngữ, anh ngữ phổ thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | --------------------- STRUCTURE GRAMMAR AND STYLE ---------------------------- The basic forms of these verbs can also be a bit tricky. The following table shows how each verb is conjugated. PRESENT PRESENT PARTICIPLE with am is are PAST PAST PARTICIPLE with have has had lie lies lying lay lain lay lays laying laid laid sit sits sitting sat sat set sets setting set set rise rises rising rose risen raise raises raising raised raised Consistent Tense To help make sure your readers are clear about when actions occur it s important to make sure your verbs are consistent in tense. A passage that begins in the present tense for example should stay in the present tense. Do not mix tenses as you write. Otherwise your readers will be confused about whether actions are taking place in the present or took place in the past. Incorrect The officer unlocked the trunk and searches for contraband. Correct The officer unlocked the trunk and searched for contraband. Incorrect When we increase advertising expenses we reduced profits. Correct When we increase advertising expenses we reduce profits. Agreement An important element of English grammar is agreement. In all sentences verbs should agree with their subjects. Singular subjects need singular verbs plural subjects need plural verbs. Incorrect He always do a very good job. singular subject plural verb Correct He always does a very good job. singular subject singular verb Incorrect Sally and Vladimir is going to the movies. plural subject singular verb Correct Sally and Vladimir are going to the movies. plural subject plural verb To make sure subjects and verbs agree you need to make sure you are clear about the subject of the sentence. One of the chairs is broken. 66 ---------------------------- STRUCTURE GRAMMAR AND STYLE --------------------------------------------- In this sentence the subject is one not chairs. Chairs is part of the prepositional phrase of the chairs and subjects are never found in prepositional phrases. Thus
