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以第三人称作主语实义动词的用法大神们帮帮忙

来源:学生作业帮 编辑:神马作文网作业帮 分类:英语作业 时间:2024/11/13 20:39:50
以第三人称作主语实义动词的用法大神们帮帮忙
英语的12种时态中,他们的主动语态和被动语态中 助动词、实义动词的变化
以第三人称作主语实义动词的用法大神们帮帮忙
动词时态共有12种,那是指主动语态的时态.在被动语态,动词的时态只有8种. 动词短语含助动词时如句式所示无论是主动语态或被动语态都置于动词短语之首,并应注意助动词之后的“be”只可用原形.,“be”的时态遵照主动语态的“vt.”的时态.一般动词的否定在主动语态是使用“do/does/did not…”,在被动语态则可就“be + p.p.”的句式,把“not”接用在“be”之后就可以. 现以“do”为例,把主动语态和被动语态的两种时态形式对照列表如下.同时观察助动词be和实义动词do的变化: (1)一般现在时 She is often seen with Jack by her classmates. (她常被她的同班同学看到和杰克在一起.) (2)一般过去时 That beautiful bridge was built by Chinese engineers. (那座美丽的桥是由中国工程师建造的.) (3)一般将来时 You will be punished if you do that again. (如果你再犯,你将受到处罚.) (4)现在进行时 He is being watched by the police. (他正受到警方的监视.) (5)过去进行时 He was being questioned by a policeman when I arrived. (我到达时他正在受一位警察的询问.) (6)现在完成时 My bicycle has been stolen (so I have no bicycle now.) (我的自行车被偷了.)(……失窃了.) (7)过去完成时 All the tickets had been sold out by 5:00 p.m. yesterday. (昨天下午五时以前所有的票都售完了.) (8)将来完成时 The cake will have been eaten up by the time you come back. (你回来时蛋糕将已被吃光了)