对于英语来说接不定式的单词多为“打算”“计划”“希望”“将要做某事”等表示未来的动词。同样与不定式表示不同的动词不定式表示正在进行,一般性或经常发生性的行为。下面小编告诉你初中英语中动词不定式的用法,大家一起来看看吧! 初中英语中动词不定式的用法: (1) 不定式作主语 To hear from you is good. 收到你的来信很好 To be a good student is not easy. 做一个好学生不容易 不定式作主语时,为了保持句子的平衡,往往以it作形式主语,不定式作为真正主语置于 谓语动词后。如: It’s good to hear from you. It’s not easy to be a good student.
(2) 不定式作宾语 通常用于want, hope, wish, like, need, hate, begin, start, remember, agree, learn, refuse, manage, help等词后。如: I forgot to close the door. 我忘记关门了 Please remember to write to me. 请记得给我写信 (3) 不定式作表语 My job is to pick up litters. 我的工作是捡起那些乱丢的垃圾 He seemed to have heard something. 他看起来似乎听说了一些事 (4) 不定式作定语 不定式作定语时,须放在它所修饰的名词或代词后。如: I have a lot of letters to write. 我有很多信要写 I have a lot of homework to do. 我有很多作业要做 (5) 不定式作宾补 通常用于want, wish, ask, order, tell, know, help, advise, allow, cause, force等词后。如: He ordered her to leave right away. 他命令她马上离开 He was forced to follow his order. 他被强迫遵守他的命令 (6) 不定式作状语 He got up early to catch the early bus. 他起得早是为了赶上早班车 He worked hard to catch up with the other classmates. 他努力学习是为了赶上班里其他同学 (7) 不定式作独立成分 To tell you the truth(to be honest), I told a lie. 说实话,我撒谎了 中考英语考查不定式用法的高频考点: 考点一 try doing sth与try to do sth try to do sth表示设法或尽力去做某事;try doing sth表示试着做某事看是否会有什么结果或效果。如: I’ll try to be more careful next time. 下次我要更小心一些。 Try holding your breath to stop sneezing. 试着屏住呼吸以止住打喷嚏。 考题实例: —I didn’t hear you come in just now. — That’s good. We tried ____any noise, for you were sleeping.(广东中考题) A. not make B. not to make C. to make D. making 分析:选B。根据后面说的“你在睡觉”可知,前面是说“尽量不要出声”,故用try not to do sth。
考点二 ask (tell…) sb to do sth 用于这类句式最常用的动词是ask和tell,ask (tell) sb to do sth的意思是“叫(告诉)某人做某事”。除ask, tell之外,以下动词也很重要:persuade, wish, invite等。如: He asked us to wait for him at the gate. 他叫我们在门口等他。 The teacher told the students to keep quiet. 老师叫学生安静。 They invited her to go for a walk. 他们请她一起去散步。 He persuaded his wife to change her mind. 他说服他妻子改变了主意。 考题实例: 1. Our teacher often asks us ________ questions in groups. (北京中考题) A. discuss B. to discuss C. discussing D. discussed 解析:B。考查ask sb to do sth的用法。句意为:我们老师经常要我们分组讨论问题。 2.—Mom, I am afraid that I can’t get through the hard time we’re having now. —My boy, be brave and tell yourself ________. (海南中考题) A. don’t give up B. not to give up C. not give up D. to give up 解析:B。考查tell sb to do sth的用法,但本题涉及的是不定式的否定式not to do sth。句意为:“妈妈,我恐怕我不能熬过我现在所处的困难时期。”“我的孩子,勇敢一点,告诉自己不要放弃。” 3. —What are you going to do when you grow up? —A singer, but my parents wish me _________ a teacher. (江苏扬州中考题) A. am B. to be C. will be D. be 解析:B。考查wish sb. to do sth(希望某人做某事)。句意为:“当你长大后,你打算做什么?”“我想当一名歌手,但是我的父母希望我成为一名老师。” 4. Lucy is shy. She would not invite her classmates _____dancing with her. (江西南昌中考题) A. practice B. practices C. practicing D. to practice 解析:D。考查invite sb to do sth(邀请某人做某事)的用法。句意为:露西非常害羞,她不会邀请她的同学和她练习跳舞。 考点三 enough to do sth enough to do sth通常用于形容词或副词的后面,表示“足够地……可以做某事”。如: He’s strong enough to lift it. 他壮得足以举起它来。 He didn’t jump high enough to win a prize. 他跳得不够高,没能得奖。 考题实例: She’s not strong enough _________ walking up mountains. (浙江杭州中考题) A. to go B. going C. go D. went 解析:A。考查“形容词+enough to do”。句意为:她不够强壮能走着去爬山。 考点四 used to do sth与be used to doing sth used to do sth指过去经常做某事;be used to doing sth指习惯于做某事。如: He is used to working at night. 他习惯在夜里工作。 He often used to work late in the evening. 他过去经常工作到深夜。 考题实例: The Greens used to live in London and now they _________ in Beijing. (江苏扬州中考题) A. used to live B. are used to live C. are used to living D. are used for living 分析:C。根据句意可知,此处是进行前后对比,即格林一家过去住在伦敦,现在他们已经习惯于住在北京。故选are used to living(习惯于住在)。 两种不同性质的“be +不定式”结构: 【问题】以下两组句子,be之后都是动词不定式,请问它们有何区别? 第一组: Her job is to look after the children. 她的工作是照顾这些孩子。 My aim is to start up my own company. 我的目标是开办一家我自己的公司。 His ambition was to meet his favourite pop star face to face. 他的心愿是,要面对面地见到他所喜爱的流行歌星。 第二组: He is to stay here until we return. 在我们回来之前他必须呆在这里。 Such people are to be pitied. 这种人应受到怜悯。 If we are to succeed, we must rely on the masses. 我们要成功必须依靠群众。 英语中,“不定式作表语”和表将来的“be +不定式”结构,是两个不同的概念。第一组是“不定式作表语”; 第一组是表将来的“be +不定式”结构。我们用最简单的方法做一区别,请看这两个句子: Her job is to look after the children. 她的工作是照料这些孩子。 She is to look after the children. 她将要照料这些孩子。(表将来,可能是安排的任务) 这两句话只是主语不同,其他部分看起来完全一样,意思却大不相同,这是为什么? 它们看起来太相似了,以至于有时难以区别,这确实是一个很有意思的问题。 Her job is to look after the children. 意为 “她的工作是照料孩子的。” 本句中,is 是系动词,to look after children是不定式作表语。主语和表语可以互换而意思保持不变:To look after the children is her job. (照料孩子是她的工作。) She is to look after the children. 意为“她将要照料孩子。”本句中,is是助动词,跟不定式to look一起,表示将来。因为不是主系表关系,所以is前后两部分不能颠倒,不可以说:To look after the children is she. 问题中的第一组都可以“主表颠倒”,变成: To look after the children is her work. 照顾这些孩子是她的工作。 To start up my own company is my aim. 开办一家我自己的公司是我的目标。 To meet his favourite pop star face to face was her ambition. 面对面地见到他所喜爱的流行歌星是他的心愿。 第二组则不可以颠倒,因为颠倒后句意逻辑不成立。 【判断规则】A代表“主语”,B代表“不定式”: “主系表结构”:A is B. 可以说:B is A. (is意为“是”) “将来时结构”:A is B. 不可以说:B is A. (is to do意为“将要做”) 习惯上接不定式作宾语的动词: 英语中有些动词后接另一个动词作宾语时,用作宾语的动词习惯要用不定式,而不用动名词,这类动词主要afford(负担得起), agree(同意), apply(申请), arrange(安排), ask(要求), care(想要), choose(决定), decide(决定), demand(要求), determine(决心), expect(期待), help(帮助), hope(希望), manage(设法), offer(主动提出), plan(计划), prepare(准备), pretend(假装), promise(答应), refuse(拒绝), want(想要), wish(希望)等。如: Less and less people can afford to go abroad for their holidays. 花得起钱去国外度假的人越来越少了。 He agreed to help but backed out when he found how difficult it was. 他本来同意给予帮助的,但在发现事情有多么困难之后就打退堂鼓了。 Bill applied to join the police last week, but he wasn’t tall enough. 比尔上星期申请参加警察部队,但是他不够高。 We arranged to meet at the station but she didn’t turn up. 我们商量好在车站见面,可是她没有露面。 There have been fewer problems for travellers who chose to fly. 对于选择乘飞机旅游的人来说问题更少。 He decided to put an advertisement in the newspapers. 他决定在报上登一份广告。 He was very ill for a time, but he managed to pull through. 有一段时间他病得很重,但他最后痊愈了。 She pretended to be angry, but she was not. 她假装生气,却并未生气。
写人工智能的英语作文
如今人工智能影响着我们生活的方方面面,在英语中也有关于人工智能的作文题材,那你想知道写人工智能的英语作文怎么写吗?下面是小编收集整理的一些写人工智能的英语作文,大家一起来看看吧! 写人工智能的英语作文篇一:
英语学习
2020-10-22