2022年高考英语助动词与情态动词练习.docx
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1、精选学习资料 - - - - - - - - - 语法复习十一:助动词与情态动词(一)助动词有 be, have, do, will, shall ;它们本身没有词义,只和实义动词的肯定形式构成复合谓语,用来表示时态和语态,构成否定、疑问及加强语气等;1、be am, is, are, were, been l“ be + -ing” 构成进行时态;( 2)“ be + 过去分词”构成被动语态;(3)“ be + 动词不定式”构成复合谓语:表示按方案支配要发生的事;The prime minister is to visit Japan next year. 总理将于明年拜访日本; 用于命令;
2、 Youre to do your homework before you watch TV. 你得做完了作业才能看电视;2、have has, had1“ have+过去分词” 构成完成时态;如:Have you seen the film . 2 “ have been + -ing” 构成完成进行时态;如:What have you been doing these days. 这些日子你始终在干什么. 3、do does, did 1“ do not + 动词原形”构成行为动词的否定式;如:His brother doesnt like playing basket.2“ Do + 主
3、语 + 动词原形”构成行为动词的一般疑问句;Does he go to school by bike every day. 3“ do + 动词原形” 用于祈使句或陈述句中表示加强语气;如:I did go to see him, but he wasnin 我的确去探望他了,但他不在家;Do do some work. 请肯定做点什么;4代替前面刚显现的动词以防止重复;My mother told me to go to bed early. So I did. 4.will, shall would, should “ will shall+ 动词原形” 构成一般将来时,一般来说 shal
4、l 用于第一人称,will 用于其次人称或第三人称,口语中常用 will 代替 shll,如: We will have a meeting to discuss the problem. (二)情态动词情态动词表示说话人对某一动作或状态的态度,可以表示“ 可能”、“ 可以” 、“ 需要” 、“ 必需”或“ 应当” 等之意;情态动词没有人称和数的变化;但不能单独作谓语动词用,必需和不带 to的不定式连用构成谓语动词;只有情态动词 ought 要和带 to 的动词不定式连用, 在句中作谓语用;将情态动词置于主语之前即构成其疑问式,在情态动词之后加 情态动词的基本用法分述如下:1、can 和 co
5、uld could 为 can 的过去式 的基本用法not 既构成其否定式;现将各1 表示才能,如:He can speak English better than you. 2 在疑问句和否定句中表示“ 怀疑”、“ 推测” 或“ 可能性”,如: Can this green bike be Liu Dongs. 3 表示“ 许可” 时 can 可以和 may换用, 如:You can may go home now. 4 假如要表示语气动听,可用 could 代替 can,这时 could不再是 can 的过去式, 如:Could you come again tomorrow. 5can
6、和 be able to 都可表示才能, 两者在意思上没有什么区分;但是 can 只能有现在式和过去式,而 be able to 就有更多的形式,如:He will be able to do the work better. 2、may和might might为may的过去式的基本用法名师归纳总结 - - - - - - -第 1 页,共 7 页精选学习资料 - - - - - - - - - 1 表示答应或征询对方许可,有“ 可以” 之意,如:You may use my dictionary. 在回答对方说“ 可以做某事” 或“ 不行以做某事” 时,一般多不用may 或 may not,
7、以防止语气生硬或不容气;而用比较动听的说法进行回答;如:- May I use this dictionary. - Yes, please. 或 - Certainly. 在恳求对方许可时,假如 Might I . 就比用 May I . 语气更动听些,如:May I have a look at your new computer. 但是表示 “ 阻挡”或“ 禁止”对方做某事时, 要用 must not 代替 may not,如: - May we swim in this lake. - No, you mustnt. It oo dangerous. 2may 或 might 都可以表
8、示可能性,表示“ 或许”、“ 可能” 之意,假如用 might 表示可能性,就语气更加不愿定,如: They may might be in the library now . 3、must 的基本用法1must 表示“ 必需”、“ 应当” 之意,其否定式 must not,缩写形式为 mustnt,表示“ 不应该” ,“ 不准” 、“ 不许可”或“ 禁止”之意,如:We must study hard and make progress every day. You mustnt touch the fire. 2 对以 must 提出的疑问句, 如作否定回答时, 要用 neednt 或用
9、dont doesnt have to 不 必 来回答,而不用mustnt,由于 mustnt 表示的是“ 禁止” 或“ 不许可” 之意,如:- Must we finish the work tomorrow. - No, you neednt dont have to, but you must finish it in three days. 3在确定句中 must 可以表示估计, 表示“ 肯定”或“ 必定”之意, 如:- Whose new bike can it be. - It must be Liu Dongs. I know his father has just bought
10、 him a new one. 4、can, could, may, must 后接完成式的用法1can, could 后接完成式的用法:在否定句或疑问句中表示对过去发生过的事情的“ 怀疑”或“ 不愿定” 的态度,Could he have said so. 在确定句中,可以表示过去可能做到而实际并没做到的事情, 有“ 劝说” 或“ 批评” 的语气;如:- When did you answer her letter. - Only yesterday. - Its too late. You could have answered it earlier, I am sure. 2may, m
11、ight 后接完成式的用法 表示对过去某事的估计,认为某一件事情在过去可能发生了;假如使用 might ,语气就比较动听或更加不愿定,如:Mary might have learned some Chinese before. 可以表示过去原来可以做到而实 际没有做到的事情,有“ 劝说”或“ 批评”的语气, 如:You didnt do the work well that day. You might have done it better. 3must 后接完成式的用法:表示对过去某事的估计,认为某事在过去一定做到 了,如: Liu Dong isnt in the classroom.
12、He must have gone to the library. 5、have to 的基本用法:have to 和 must 的意义相近,只是 must 侧重表示说话人的主观看法,而 have to 就表示客观需要,如:6、ought to 的基本用法I must study hard. I had to give it up because of illness. l 表示依据某种义务或必要“ 应当”做某事, 语气比 should 强,例如:Everyone ought to obey the traffic regulations. 2 表示估计,留意与 must 表示估计时的区分:H
13、e must be home by now . 断定他已到家 ,He ought to be home by now . 不非常确定 ,This is where the oil must be. 比较直率 ,名师归纳总结 - - - - - - -This is where the oil ought to be. 比较含蓄 ;3“ ought + have+ 过去分词”表示过去应做某事而实际未做;例如:You ought to have helped him. but you didn这时, ought 与 should 可以相互换用;留意,在美国英语中ought to 用于否定和疑问句时
14、to 可以省略; 例如:Ought you smoke so 第 2 页,共 7 页精选学习资料 - - - - - - - - - much. You oughtnt smoke so much.7、dare 的基本用法ldare dared 为其过去式 作情态动词用时,主要用于否定句,疑问句和条件从句中,如:Dared he bread the traffic regulations again. 2 在现代英语中dare 常用作行为动词,其变化与一般行为动词相同,如:She dares to stay at home alone at night. 8、need 的基本用法1need 作
15、情态动词用时,主要用于否定句和疑问句中,如:He neednt worry about us now. 2need 也可作为行为动词用,可用于确定句,否定句和疑问句中,其后可接名词、代词、动名词或带to 的动词不定式为其宾语;如:You need to practise reading aloud every day. 3neednt 后接完成式可以表示过去做了一件原来不必要做的事情,如:- Did you answer the letter yesterday. - Yes, I did. - But you neednt have answered it.9、shall 的基本用法1sha
16、ll 用作情态动词时,用于其次、 三人称, 表示说活人的意愿,可表示 “ 命令” 、“ 警告” 、“ 强制” 、“ 威逼” 或“ 承诺” 等意,如:He shall go first, whether he wants to or not. 2 在疑问句中, shall 用于第一、三人称,表示说话人的征询对方看法或恳求指示,如:Shall I open the door. 10、should 的基本用法1should 作为情态动词可以表示“ 建议” 或“ 劝说”,有“ 应当” 之意,如:You should learn from each other. 2should 后接完成式表示过去没有做
17、到原来应当做的事情,或是做了原来不应当做的事情;如:You should have give him more help. 11、will 的基本用法1用于各人称, 可以表示“ 意志” 或“ 决心” ,如:I have told him again and again to stop smoking, but he will not listen. 2在疑问句中用于其次人称,表示说话人向对方提出恳求或询问对方的意愿,如: Will you please tell me how to get to the Capital Gymnasium. 3will 可以表示一种习惯性的动作,有“ 总是”
18、或“ 会要” 之意,如:12、would 的基本用法Every morning he will have a walk along this river. 1would 作为 will 的过去式,可用于各人称,表示过去时间的“ 意志” 或“ 决心”,如: He promised he would never smoke again. 2 在疑问句中, 用于其次人称, 表示说话人向对方提出请求或许问对方的意愿时,比用 will 的气更加动听,如:Would you like some more coffee. 3 在日常生活中, 学用“ I would like to ” 表示“ 我想要”或“
19、我情愿”之意,以使语气动听, 如:I would like to do Ex.2 first. 4would 可以表示过去的习惯动作,比 used to 正式, 并没有 “ 现已无此习惯”的含义;如: Last year our English teacher would sometimes tell us stories in English after class. / During the vacation he would visit me every week. 5表料想或猜想,如:It would be about ten when he left home./ What woul
20、d she be doing there./ I thought he would have told you about it. 13、used to, had better, would rather 的用法1used to 表示过去的习惯动作或状态,现在已不存在,在间接引语中,其形式可不变,例名师归纳总结 - - - - - - -第 3 页,共 7 页精选学习资料 - - - - - - - - - 如:He told us he used to play foot ball when he was young. 在疑问句、 否定句、 否定疑问句或强调句中,可有两种形式; 疑问句:Di
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