2023年中考英语复习语法专题7--连词课件(共20张PPT)

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名称 2023年中考英语复习语法专题7--连词课件(共20张PPT)
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更新时间 2022-07-28 08:48:43

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(共20张PPT)
语法专题7--连词
考查内容
连词的分类
连词固定句型
连词的辨析
连词的分类
并列连词
从属连词
1.表顺承或并列关系:both...and, as well as,neither...nor...
not only... but also...等
2.表转折关系:but, yet,while等
3.表选择关系:or,either...or...等
4.表因果关系:so,for等
1.引导时间状语从句的连词:after,before,when, as soon as, since等
2.引导原因状语从句的连词:because,as,since 等
3.引导目的状语从句的连词:so that,in order that等
4.引导结果状语从句的连词:so...that,such...that等
5.引导条件状语从句的连词:if, unless等
6.引导让步状语从句的连词:though,although,even if/though等
7.引导比较状语从句的连词:than, as...as等
8.引导地点状语从句的连词:where, wherever等
分类 连词 例句
并 列 关 系 ①and(和)--变否定时,and改为or ②both. . . and(既……又)--谓语动词复数 ③not only. . . but also(不但……而且) ④neither. . . nor(既不……也不) Mr. Brown is not only our teacher but also our friend.
布朗先生不仅是我们的老师,而且是我们的朋友。
转 折 关 系 but(但是),however(然而),while(然而) He is very young, but he knows a lot.
他虽然很小,但是知道很多。
因 果 关 系 so(因此), because(因为), for(因为) Bill doesn’t come to school because he is ill. 比尔今天没来上学是因为他生病了。
选 择 关 系 or(还是) either. . . or(或者……或者)--就近原则 Nick is either in London or in Paris.
尼克不是在伦敦就是在巴黎。
一、并列连词
就近
一、并列连词
1. 两对“冤家对头”不能同时出现在一个句子中: although/ though与but;because与so。
2. and和or的区分
(1)and用于肯定句中,or用于否定句或选择疑问句中。
eg:①I like bread and milk for breakfast.
我早餐喜欢吃面包和喝牛奶。
②I don’t like bread or milk for breakfast.
我早餐不喜欢吃面包,喝牛奶。
③Would you like some tea or coffee
你喜欢喝茶还是咖啡?
(2)否定句中两部分都有否定词时用and连接。
eg:Bill has no brothers and no sisters.
=Bill has no brothers or sisters. 比尔没有兄弟姐妹
一、并列连词
(3)句中含有without时,肯定句中用or,否定句中用and。
eg:①We can’t live without air and water.
没有空气和水,我们无法生存。
②We’ ll die without air or water.
没有空气和水,我们就会死亡。
(4)and与or(表示“否则”)都可以与if引导的条件状语从句转换。
eg:①Get up quickly, or you’ll be late for school.
=If you don’t get up quickly, you’ll be late for school.
快点起床,否则你上学会迟到。
②Work hard, and you’ll get good grades.
=If you work hard, you’ll get good grades.
努力学习,你会取得好成绩。
二、从属连词
1.引导时间状语从句的连词:after,before,when,while,as soon as,since
<1>after “在...之后” eg: I went to bed after I finished my homework.
<2>before “在...之前”eg: I will stay here before my father comes back.
<3>when 和while 均意为“当……的时候”。
①when既可以引导持续性动作,又可引导短暂性动作。而while引导的动作必须是持续性的。
eg:She will smile when you praise her.
Can you look after my pet dog while I am away?
②含有when引导的时间状语从句中,若主句是一般将来时,从句要用一般现在时表将来时。
eg:I will go with you when I finish my work.
<4>as soon as 意为:“一...就...”,若主句是一般将来时,从句要用一般现在时表将来时。
eg: I will call you as soon as I get there.我一到那儿就会给你打电话。
<5>since “自从...而来”,主句为现在完成时,从句是过去式。
eg: It has been six years since I began to study English.
二、从属连词
2.引导原因状语从句的连词:because,as, since等
eg:She didn’t go there, because she was ill.
3.引导目的状语从句的连词:so that, in order that等
eg:She got up early so that she could catch the early bus.
4.引导结果状语从句的连词:so...that, such... that
<1>such
修饰名词
such+a/an +adj+可数名词单数
such+adj+不可数名词/可数名词复数
that 从句
<2>so
修饰形容词/副词
so+adj/adv+that 从句
eg:He is such a clever boy that we all like him.
=He is so clever a boy that we all like him.
二、从属连词
5.引导条件状语从句的连词:if 如果,unless除非等
eg:If it is fine tomorrow, we will go to the park.
6.引导地点状语从句的连词:where, wherever等
eg:You can go wherever you like.
7.引导让步状语从句的连词:though,although,even if, even though
eg: Though it is rainning hard, we must get there on time.
8.引导比较状语从句的连词:than, as...as
eg: He is better at English than I.
9.引导宾语从句的连词
<1>that 连接由陈述句转变成的宾语从句。
eg: I am glad that you are ready to help others.
<2>if, whether 引导从疑问句转变成宾语从句,一般情况下,if与whether可互换
二、从属连词
<3>只能用whether而不用if的情况:
①与动词不定式连用时
eg: I don’t know whether to go.
②在介词后作宾语时
eg:I’m worried about whether she can come here on time .
③ 在主语从句(位于句首),表语从句和同位语从句之中
eg:Whether we will go to park depend on the weather.
④与or not 直接连用
eg:I don’t know whether or not this idea can be put into practice.
⑤在动词 discuss后的宾语从句中
eg:We are discussing whether we will hold a sports meeting.
三、连词的固定句型
1.not... until/till表示“直到...才...” ,not 可以由 never,nobody ,few ,little,seldom,hardly等否定词连用。
eg: We didn’t recognize them until they get close.
Don’t put off what you can do today until/ till tomorrow.
=Never put off what you can do today until/ till tomorrow.
2. It is/has been + 一段时间+since +从句,表示“自从...过了多久时间”
<1> 如果since从句的谓语动词时瞬间动词时,表示时间从动作开始的那一个时刻算起。
eg: It has been ten years since he leaf Beijing.
自从他离开北京已经10年了。
<2>如果since从句的谓语动词时延续性动词时,表示时间从持续性动作结束时算起。
eg: It is a long time since he smoked.
他戒烟已经很长时间了。
三、连词的固定句型
3. It was/ will be + 一段时间+before 从句 表示“过了很长时间之后才...”
<1>在这句型,若主句用一般过去时,从句也用一般过去时。
eg: It was long before thery found their son.
<2>在这句型,若主句用一般将来时,从句也用一般现在时。
eg: It will be a year before her husband comes back.
四、连词的辨析
1. when,while与as的区别
易混词 用法 例句
when 可表示瞬间,也可表示一段时间。主句与从句的动作可以同时发生,也可以先后发生。 When I come home,my mother was cooking dinner.
当我回家时,我妈妈在做晚饭
while 表示一段时间或一个过程,只和延续性动词连用,强调主句的动词与从句的动词表示的动作和状态是同时发生的,常对同类的两个动作进行对比 Please write while I read.
我读的时候,请跟着写。
as 可与while互换,但as着重指主从句的动作同时发生,而不是一前一后,可翻译为“一边...一边...” They talked as they walked. 他们边走边谈。
四、连词的辨析
2. because,for,since与as的区别
易混词 用法 例句
because 表示原因和理由,强调直接原因和因果关系,它所引导的从句通常放在主句之后。 I like eat vegetable because it is healthy.
我喜欢吃蔬菜因为非常健康。
for 并列连词,表示间接的原因和理由,或对前一分句中事实的解释,for连接的分句不放在句首。 Miss Li can’t be in the office, for the door is lock.
李老师不可能在办公室,因为门是锁着的。
since 表示原因时,语气比because弱,但是比as强。他一般不表示根本或直接的原因,而是一种已知的、显然的理由,作“既然”讲时,常位于句首 Since everybody is here, let’s begin our meeting.
既然大家都在这儿,咱们开始开会吧。
as 表示原因时语气比because弱,表示不可言喻,显而易见的原因,多置于句首。 As you were out, I left a message.
你不在,所以我留下了口信。
四、连词的辨析
3.as与like 的区别
易混词 用法 例句
as 意为“当...时,随着,照...方式;因为” All the students do as the teacher says.
所有学生都按照老师说的做。
like 用于说明相似关系,表示两者有相似之处,但并不等同 He works like a horse does.
他像马那样干活。
1. The man was so tired, _______ he still went on working.
A. so B. but C. or D. and
【解析】选B。由句意:那个人是那么累,但是他仍然继续工作。可知前后两句存在转折关系,故选B。
2. The boy is _______ clever that everybody _______ him.
A. such; likes B. so; likes C. so; like
【解析】选B。由that前clever是形容词故用so修饰;everybody作主语时谓语动词用单数,故选B。
3. — I hear _______ your grandpa _______ your grandma like watching Beijing Opera.
— Right, just as many old people do in our city.
A. both; and B. either; or
C. neither; nor D. not only; but also
【解析】选A。由谓语动词like是复数可知并列连词是both. . . and。其他三个选项的并列连词连接并列主语时,谓语动词与最近的主语保持一致,故选A。
练一练
4. _______ Lisa ______ Lucy may go with you because one of them must stay home to take care of the dog.
A. Not only;but also B. Neither;nor
C. Both;and D. Either;or
【解析】选D。not only. . . but also不但……而且; neither. . . nor既不……也不; both. . . and. . . 两者都。由后半句句意“因为她们中的一个必须在家里照看狗”可知,两个人只能去一个,因此应用either. . . or连接两个并列的主语。
5. —Mom, when shall we go to Weifang Museum this weekend
—Oh, sorry. I’m going to Beijing for a meeting. _______ Saturday _______ Sunday is OK.
A. Neither; nor B. Both; and
C. Either; or D. Not only; but also
【解析】选A。句意:——妈妈, 我们这个周末何时去潍坊博物馆啊? ——哦,对不起。我将去北京开会。周六和周日都不行。neither. . . nor 既不……也不。故选A。
6. (2011·宜宾中考)He didn’t go to school yesterday _______ he was ill.
A. because B. because of C. if D. so
【解析】选A。由句中前后两部分的意思可知,后半部分在表明前面“没有上学”的原因,排除C与D项;because后跟句子而because of后跟单词或短语。故选A。
7. Don’t forget to wash hands _______ you have meals.
A. before B. until C. through D. unless
【解析】选A。句意:你别忘了饭前洗手。before在……之前。故选A。
8. —What was your brother doing at this time yesterday
—He was reading a magazine _______ I was writing an e-mail at home.
A. as soon as B. after
C. until D. while
【解析】选D。as soon as一……就……;after在……之后; until直到……为止;while当……的时候,和……同时。由答语句意“他在家读杂志而我在写电子邮件”可知,两个动作同时进行,故选D。
9.—How do you like the story
—Interesting, _______ the end of it is not perfect.
A. so B. though C. or D. because
【解析】选B。though“虽然;尽管”,根据答句句意“很有意思,尽管结局不完美。”可作出判断。
10. —I hear the famous singer Xu Song may come to Ningbo next month.
—Really _______ he comes, my younger sister will be very excited.
A. If B. Until C. Unless D. Before
【解析】选A。until直到……为止;unless除非;before在……之前;if如果。由答语“是吗?如果他来了,我妹妹将会很兴奋。”可知,应选A。
11.I don't have to introduce him to you ________ you know the boy.
A.until B.unless C.since D.but
【解析】until“直到”;unless“除非”;since“既然”;but“但是”。根据句意答案只能选C。
12.Jane, please turn off the lights ________ you leave the classroom.
A.after B.before C.until D.but
【解析】根据句意“在离开教室前请关掉灯”,故答案选B。
THANKS