内容正文:
【词类精讲】谓语篇
句子的心脏,思想的引擎
谓语是句子中表达动作、状态或存在的关键部分,通常由动词或动词短语构成。它是构成完整句子的核心成分之一,与主语一起,提供了句子的基本意义。谓语的主要功能是描述或说明主语执行的动作、所处的状态,或者存在的情况。
什么是谓语?
谓语可以是一个单一的动词或一个包含助动词和主动词的短语。
谓词的特点和作用
动作或状态的表达:
谓语通过其时态(如现在时、过去时、将来时)表明动作发生的时间。
时间和态的指示:
单一的动词
如“run”, “is”
包含助动词和主动词的短语
如“has been running”
谓语与主语紧密相关,描述主语的行为或状态。
主语的行为或状态:
谓语可以通过不同的形式表达陈述、疑问、命令或感叹等不同语气。
语气的体现:
行为
她笑了
状态
天空晴朗
谓语必须在人称和数上与主语保持一致。
主谓一致:
谓语通常承担句子的主要语义负载,传达核心意义。
语义负载:
谓语的分类
用途:
动词时态
一般现在时(Simple Present)
描述习惯性动作、普遍真理、或当前不变的状态。
She eats breakfast every morning.
Water boils at 100°C.
He speaks three languages.
她每天早上吃早餐。
水在100°C沸腾。
他会说三种语言。
一般过去时(Simple Past)
用途:
表达过去某个特定时间发生的动作或状态。
I lived in London for two years.
It rained yesterday.
他们昨晚去看电影了。
我在伦敦住了两年。
昨天下雨了。
They went to the movies last night.
一般将来时(Simple Future)
用途:
预测未来的事件或表示未来某时会发生的动作。
She will graduate next year.
It is going to rain tomorrow.
They will meet us at the airport.
她明年将毕业。
明天会下雨。
他们将在机场和我们见面。
现在进行时(Present Continuous)
用途:
表达正在进行的动作或近期的计划。
She is reading a book.
They are traveling to Japan next week.
I am studying now.
我现在正在学习。
她正在读一本书。
他们下周将去日本旅行。
过去进行时(Past Continuous)
用途:
描述过去某一时刻正在进行的动作。
We were eating dinner at 8 PM last night.
She was writing an email when the power went out.
He was sleeping when I called.
我打电话时他正在睡觉。
我们昨晚8点正在吃晚餐。
电断了时她正在写电子邮件。
现在完成时(Present Perfect)
用途:
描述过去发生且对现在有影响的动作,或者至今仍在持续的动作。
I have finished my work.
She has lived in New York since 2010.
They have not decided yet.
我完成了我的工作。
她从2010年起就住在纽约。
他们还没有决定。
过去完成时(Past Perfect)
He had left the office before the rain began.
They had been friends for years before they became business partners.
雨开始前他已离开办公室。
在成为生意伙伴之前,他们已是多年的朋友。
用途:
表达在过去某个时间点之前已经完成的动作。
I had finished my homework before the movie started.
电影开始前我已经完成了我的家庭作业。
将来完成时(Future Perfect)
用途:
预测在未来某个时间点之前将已经完成的动作。
They will have finished the project by the end of this month.
She will have worked here for ten years by 2025.
By next year, I will have graduated from university.
到明年,我将已经从大学毕业。
到这个月底,他们将已经完成项目。
到2025年,她将已在这里工作十年。
谓语的分类
被动语态
被动语态的结构
be动词 + 过去分词
(“Be动词”的形式根据主语和时态的不同而变化。)
被动语态的用途
当动作的执行者未知、不重要或者应被省略时。
当需要强调动作的接受者(句子的主语)时。
在科学、学术和正式写作中常见,以客观地呈现信息。
时态与被动语态
被动语态可以与不同的时态结合,如现在被动、过去被动等。
The cake is being baked in the oven.
The letters are sent every week.
现在被动
The book is written by Mary.
这本书是玛丽写的。
蛋糕正在烤箱里烘烤。
这些信每周都被发送。
The message will be sent tomorrow.
The book will be published next year.
The cake was baked by her.
The meeting was held yesterday.
过去被动
The window was broken by the ball.
将来被动
The project will be completed by next month.
窗户被球打破了。
蛋糕是由她烤的。
会议是昨天举行的。
该项目将在下个月完成。
这条信息将在明天发送。
这本书将在明年出版。
The work has been done.
The song has been sung by many artists.
现在完成被动
The report has been approved by the manager.
报告已经得到经理的批准。
工作已经完成。
许多艺术家演唱过这首歌。
谓语的分类
情态动词
情态动词的定义
情态动词是一类助动词,用于表达能力、可能性、许可、必要性或义务等。它们通常与动词原形一起使用。
常见情态动词
Can, Could, May, Might, Must, Shall, Should, Will, Would
情态动词的用途
能力(Can, Could):表达能力或技能
可能性和推测(May, Might, Could):表示某事可能发生或可能是真的
许可(Can, May):请求或给予许可
建议和建议(Should, Ought to):给出建议或推荐
义务和必要性(Must, Have to):表示必须做某事
意愿和决定(Will, Would):表达意愿、决定或习惯性行为
情态动词实例
He could swim when he was five.
能力:
She can play the piano.
她会弹钢琴。
他五岁时就会游泳。
She may be at home now.
可能性和推测:
It might rain later.
等会可能会下雨。
她现在可能在家。
They could be the winners.
他们可能是赢家。
You may leave early if you wish.
许可:
Can I open the window?
我可以打开窗户吗?
如果你愿意,你可以早点离开。
He ought to see a doctor.
建议和建议:
You should try to exercise more.
你应该尝试多做运动。
他应该去看医生。
We have to wear uniforms at school.
义务和必要性:
I must finish this report by Friday.
我必须在周五前完成这份报告。
我们在学校必须穿校服。
She would visit her grandparents every Sunday.
意愿和决定:
I will call you tonight.
我今晚会给你打电话。
她每个星期天都会去看望她的祖父母。
谓语的分类
主谓一致
主谓一致的定义
主谓一致指的是句子中的主语和谓语在数(单数或复数)和人称上必须保持一致。
主谓一致的基本规则
单数主语配单数谓语
复数主语配复数谓语
特殊情况和注意点
当主语由“and”连接时,通常视为复数。
当主语由“or”、“nor”、“either...or”、“neither...nor”连接时,谓语与最接近的主语一致。
不定代词(如somebody, everyone, each)通常作单数处理。
集合名词(如family, team)根据语境可能是单数也可能是复数。
主语后的短语或从句不影响主谓一致。
主谓一致实例
The dogs bark.
基本规则
The dog barks.
狗叫。
狗们叫。
Either the cat or the dogs make the noise.
特殊主语
My brother and sister are playing.
我的兄弟和姐姐在玩耍。
要么是猫要么是狗们制造的噪音。
复数主语
靠近谓语的主语是复数
不定代词
Everyone is welcome.
每个人都受欢迎。
The team are arguing among themselves.
集合名词
The team is playing well.
团队表现良好。
团队成员之间在争论。
作为整体看待
强调个体成员
短语或从句
A girl with the dogs walks in the park.
一个女孩带着几只狗在公园里散步。
“with the dogs”不影响主谓一致
谓语的分类
虚拟语气
虚拟语气的定义
虚拟语气用于表达与现实相反的情况、未实现的愿望、建议或假设性的语句。
虚拟语气的主要类型
条件句虚拟:用于表达与现在、过去或将来事实相反的情况。
建议性虚拟:用于提出建议或命令。
虚拟语气的常见结构
条件句中,通常使用
if + 过去时态(对现在相反)
if + 过去完成时(对过去相反)
或
建议性虚拟中,常用“should”或“were to”结构。
虚拟语气实例
If he had more time, he would travel the world.
条件句虚拟(现在或将来)
If I were a bird, I would fly.
如果我是一只鸟,我会飞。
如果他有更多时间,他会周游世界。
If they had arrived earlier, they would have seen the show.
条件句虚拟(过去)
If she had studied harder, she would have passed the exam.
如果她学习更努力,她就会通过考试。
如果他们早点到,他们就能看到演出了。
I suggest that she study more.
建议性虚拟
It is important that he be informed immediately.
重要的是他必须立即被告知。
我建议她多学习。
练习巩固
1. She ________ (write) her thesis for two years now.
A. writes
B. wrote
C. has been writing
D. is writing
【解析】表示从过去某一时间点持续到现在的动作,使用现在完成进行时。
C
练习巩固
【解析】表示过去某一时刻正在进行的动作,使用过去进行时。
2. When I arrived, they ________ (eat) dinner.
A. eat
B. ate
C. were eating
D. have eaten
C
练习巩固
3. By the time you receive this letter, I ________ (leave).
A. leave
B. will have left
C. have left
D. had left
【解析】表示在未来某个时间点之前将已经完成的动作,使用将来完成时。
B
练习巩固
【解析】"belonging" 在这里作为定语,正确地描述了被动语态下的状态。
4. The house ________ to Mr. Green was destroyed in the fire.
A. belonging
B. belonged
C. belongs
D. has belonged
A
练习巩固
5. The new shopping mall ________ next year.
A. will open
B. opens
C. is opened
D. will be opened
【解析】表示将来某个时间的被动动作,使用将来被动语态。
D
练习巩固
6. This book ________ by a famous author.
A. wrote
B. was written
C. has written
D. is writing
【解析】描述过去的被动动作,使用过去被动语态。
B
练习巩固
7. You ________ see the doctor if you feel worse.
A. must
B. can
C. should
D. might
【解析】表达建议,使用情态动词“should”。
C
练习巩固
【解析】描述过去的能力,使用情态动词“could”。
8. He ________ swim when he was five.
A. can
B. could
C. will
D. would
B
练习巩固
9. They ________ come to the party tonight.
A. must
B. might
C. should
D. would
【解析】表达可能性,使用情态动词“might”。
B
练习巩固
10.Each of the students ________ a uniform.
A. wear
B. wears
C. wearing
D. worn
【解析】"Each" 后面跟单数谓语。
B
练习巩固
11.The team ________ for the championship.
A. compete
B. competes
C. competed
D. competing
【解析】集合名词“team”作为单一实体,使用单数谓语。
B
练习巩固
12.Either the teacher or the students ________ wrong.
A. is
B. are
C. has
D. have
【解析】使用“or”连接时,谓语与最接近的主语一致。“students”是复数,所以谓语使用复数形式“are”。
B
练习巩固
13.If I ________ you, I would apologize.
A. am
B. was
C. were
D. be
【解析】在假设情况下,使用“were”而非“was”。
C
练习巩固
14.It is necessary that he ________ the rules.
A. follows
B. followed
C. follow
D. following
【解析】在正式建议中,虚拟语气通常使用动词原形。
C
练习巩固
15.I wish it ________ tomorrow.
A. will rain
B. would rain
C. rains
D. rained
【解析】在表示愿望的句子中,常用“would + 动词原形”。
B
谢 谢 观 看!
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