❶ 初中英语语法知识总结:从句
一 名词性从句:
1. 主要包括主语从句,宾语从句,表语从句和同位语从句. 一般由that 引起,也可由who, what, when, why, which, whom, whether, how 引起.
2. 主语从句很多情况下都可以放到句子后面,而用代词it作形式上的主语. :
3. 形式宾语
4. 由名词性关系代词whatever, whoever, whichever 等引起的宾语从句
5. whether and if 都能引导从句, 但用法有所不同. 当主语从句直接位于句首时,应用whether,而不用if. Whether 后能直接or not, 但if 不能.
Whether he will come or not is not known.
6. 在名词reason后的表语从句必须用that引导, 不可误用 because.
The reason why he is often late for class is that he has the bad habit of getting up late in the morning.
二: 定语从句
1. 引导定语从句的关系词有who, whom, whose, that, when, where, why and which. 在非限制定语从句中, 只可用which, who, whose, where , when., 如果指代前面整个句子, 多用which.
2. 当引导定语从句的先行词前有all, any, no, little, much, very first 等词, 或先行词前为形容词最高级所修饰时,或先行词为all, anything, nothing, something, everything 时,从句的引导词只能用that.
3. as 可做引导词引导定语从句, 多和such, the same 连用. As 引导的定语从句也可修饰整个句子, 既可放在先行词后,也可放在句子开头.
4. 介词+which/whom/whose从句
5. 代/名+介词+which 从句
6. 同位语从句和定语从句
三 状语从句:
修饰主句中的动词, 形容词和副词, 通常有从属连词引导, 按其意义和作用可分为时间, 地点, 条件, 原因, 让步, 目的, 结果, 方式, 比较.等
1. 时间状语从句:
1) 常见连词有 after, as, before, once, since, till, (not)until, when, whenever(no matter when), while, as long as, as soon as etc.
2) no sooner…than, hardly(scarcely, barely)…when: 刚做…就….
3) 还有 immediately, directly, instantly, the moment, the minute, the instant, the second, every time etc
2. 地点状语从句: 一般用where or wherever 引导
3. 条件状语从句:真实条件从句:if, unless, so long as, provided that, supposing that, on condition that, in the event that, in case that etc
4. 原因状语从句: 从属连词有because, as ,since, for, now, that, in that, seeing that, considering that(鉴于,由于)
5. 让步状语从句:
1): even if, though, even though, while(尽管) no matter what/how/which, however, whatever, whichever, however etc.
2) 由as 引起的让步从句, 语气较强烈,被强调的词须放在句首.
3) whether…or,不管…或…
6. 结果状语从句: so that, so…that, such…that
7. 目的状语从句: so that, in order that, for fear that, lest, in case
8. 方式状语从句: as, just as, as if: 如同…一样
9. 比较状语从句:
1) as…as, not so/as…as
2) 比较级+than, so much/a lot more than
3) no more…than, not more…than, less…than
4) the more…the more
❷ 英语的一些基础和知识
1、所有格:He is Fred'sbest friend.(+'s)
2、动词现在时的第三人称单数:Alfredo works.(+s)
3、动词过去式:Fred worked.(+ed),但亦有不规则变化。
4、现在分词/进行时态:Fred is working.(+ing)([注]如果动词的末音节为辅音结尾的闭音节,则须双写末辅音,如running)
5、过去分词:The car was stolen.(+en);Fred has talkedto the police.(+ed),但亦有不规则变化。
6、动名词:Working is good for the soul.(+ing)
7、名词的复数:Fred has two blue eyes.(+s)([注]如果动词的尾字是s,sh,x,ch,则需加+es,如dishes)
8、形容词的比较级:Fred is smarter than Rick.(+er)形容词末尾加+er,多音节在前面”加more,如"more difficult"。
9、形容词的最高级:Fred has the fastest car.(+est)形容词末尾加+est,多音节词在前面加most,如"the most difficult"。
英语的基本语序为SVO,且基本上不能任意变换语序,除了在少数诗词以外;另一方面,有时英语会使用OSV的语序。(注:S:Subject[主语];V:Verbal phrase[谓语];O:Object[宾语])
词性简介
英语中所有的词可分成十大类两部分,实词(national word)和虚词(form word)。每一类词在句子中都有其特定的位置和作用。这十大词类是:
实词
一、 名词(n.):表示人或事物的名称的词。如:guy(人) suggest(建议)
二、 形容词(adj.):表示人或事物的特征的词。如:interesting(感兴趣)red(红的)
三、 副词(adv.):修饰动词、形容词和副词的词。如:luckily(幸运地) happily(快乐地)
四、 代词(pron.):是代替名词、形容词和量词的词。如:he(他) they(她们)
五、 数词(num.):表示数量和顺序的词,有基数词和序数词。
六、 动词(v.):表示动作或状态的词。
非谓语动词(虚词)
分为不定式、动名词、现在分词 如:put(把) go(走)
七、冠词(art.):与名词连用,其说明人或事物的作用。如:the(这) an(元音音素前的一个)
八、介词(prep.):通常置于名词和代词之前,表示名词和代词与其他词的关系。
九、连词(conj. ):连接词与词、短语与短语、句子与句子的词。
十、感叹词(interj.):表示说话人感情或语气的词。
助动词和情态动词
有be,do,have,will,would,shall,should
助动词本身无意义,不能单独作谓语,其作用是辅助实义动词组成谓语。
情态动词没有实义动词的各种变化。情态动词后+动词原形
时态概述
英语共有十六个时态、四个体。(注:四个体为——一般、进行、完成、完成进行。)
英语中的四个体相当于法语、西班牙语以及所有印欧语系罗曼语族中 的式,如:直陈式,命令式等。
时态详解
一般现在时
基本形式(以do为例)
肯定句:主语+动词原形+其他;
He works for us.
否定句:主语+don‘ts/doesn't+动词原形+其他;
He doesn't work for us.
一般疑问句:Did/Do/Does+主语+动词原形+其他;
肯定回答:Yes,(+ 主语+Did/do/does);
否定回答:No,(+主语+don't/doesn't.);
特殊疑问句:疑问词+一般疑问句语;
Does he work for us?
Yes,he does.
No,he doesn't
What does he do for us?
He works for us.
一般过去时
be动词+行为动词的过去式
否定句式:在行为动词前加didn’t,同时还原行为动词,或was/were+not;
was或were放于句首;用助动词do的过去式did提问,同时还原行为动词;
例如:Did he work for us?
He didn't work for us.
He worked for us.
一般将来时
am/are/is+going to+do 或
will/shall+do
am/is/are/about to + do
am/is/are to + do;
一般将来时的表达方法
be going to +动词原形
be +不定式,be to+动词原形,be about to +动词原形
be able to +不定式
be about to+动词原形
will + 动词原形;
例如:He is going to work for us.
He will work for us;
He is coming.这是特殊的用一般现在时表达将来时态的例子
过去将来时
be(was,were)going to+动词原形
be(was,were)about to+动词原形
be(was,were)to+动词原形
肯定句:主语+be(was,were)going to+动词原形~.
否定句:主语+be(was,were)not going to+动词原形~.
疑问句:Be(Was,Were)+主语+going to+动词原形~?
肯定句:主语+would(should)+动词原形~.
否定句:主语+would(should)not+动词原形~.
疑问句:Would(Should)+主语+动词原形~?
He would work for us.
现在进行时
主语+be+v.ing〔现在分词〕形式(其中v表示动词)
表示现在正在进行的动作或最近在做的事。
例如:I am buying a book.
第一人称+am+doing+sth
第二人称+are+doing +sth (doing是泛指所有的v-ing形式)
第三人称+is+doing+sth
例:He is working.
过去进行时
肯定句:主语+was/were+doing+其它
否定句:主语+was/were+not+doing+其它
一般疑问句及答语:Was/Were+主语+doing+其它 ;答语:Yes,I主语+was/were./No,I主语+wasn't/weren't.
特殊疑问句:特殊疑问词+was/were+主语+doing+其它
He was working when he was alive.
将来进行时
主语+will + be +现在分词
He will be working for us.=He will work for us.
过去将来进行时
should(would)+be+现在分词
He said that he would be working for us.=He said that he would work for us.
现在完成时
基本结构:主语+have/has+过去分词(done)
①肯定句:主语+have/has+过去分词+其他
②否定句:主语+have/has+not+过去分词+其他
③一般疑问句:Have/Has+主语+过去分词+其他 肯定回答:Yes+主语+have/has 否定回答:No+主语+have/has
④特殊疑问句:特殊疑问词+一般疑问句(have/has+主语+过去分词+其他\
He has worked for us for ten years.
Has he worked for us for ten years?
过去完成时
基本结构:主语+had+过去分词(done)
①肯定句:主语+had+过去分词+其他
②否定句:主语+had+not+过去分词+其他
③一般疑问句:Had+主语+过去分词+其他
肯定回答:Yes,主语+had
否定回答:No,主语+hadn't
④特殊疑问句:特殊疑问词+一般疑问句(had+主语+过去分词+其他)
语法判定:
( 1 ) by + 过去的时间点。如:
I had finished reading the novel by nine o'clock last night.
( 2 ) by the end of + 过去的时间点。如:
We had learnt over two thousand English words by the end of last term.
( 3 ) before + 过去的时间点。如:
They had planted six hundred trees before last Wednesday.
将来完成时
(shall)will+have+动词过去分词
before+将来时间或by+将来时间
before或by the time引导的现在时的从句
He will have worked for us.=He will work for us.
过去将来完成时
should / would have done sth.
He said that he would have worked for us.=He said that he would work for us.
现在完成进行时
基本与现在完成时相同,但是现在完成进行时只能表示仍然持续的概念
have/has been +-ing 分词
He has been working for us for ten years.=He has worked for us for ten years.
过去完成进行时
had been +-ing 分词
He said that he had been working for us for ten years.=He said that he had worked for us for ten years.
将来完成进行时
主语+ shall/will have been doing
He will have been working for us.=He will work for us.
翻译为:他最近一直在为我们工作(过去在工作,现在在工作,将来还会工作)
过去将来完成进行时
should+have been+现在分词用于第一人称
would have been+现在分词用于其他人称
He said that he would have been working for us.=He said that he would work for us.
举例:
英语中有12个主要时态,都来自于三时(过去、现在、将来)
❸ 初一都应该知道那些英语知识,词性,语法都应该知道哪些呢
楼主,您好一、初一英语语法——词法
1、名词
A)、名词的数
我们知道名词可以分为可数名词和不可数名词,而不可数名词它没有复数形式,但可数名词却有单数和复数之分,复数的构成如下:
一)在后面加s。如:fathers, books, Americans, Germans, apples, bananas
二)x, sh, ch, s, tch后加es。如:boxes, glasses, dresses, watches, wishes, faxes
三)1)以辅音字母加y结尾的变y为i再加es 如:baby-babies, family-families, ty-ties, comedy-comedies, documentary-documentaries, story-stories
2)以元音字母加y结尾的直接加s。如:day-days, boy-boys, toy-toys, key-keys, ways
四)以o结尾加s(外来词)。如:radios, photos, 但如是辅音加o的加es:如: tomatoes西红柿, potatoes马铃薯
五)以f或fe结尾的变f为v再加es(s)。如:knife-knives, wife-wives, half-halves, shelf-shelves, leaf-leaves, yourself-yourselves
六)单复数相同(不变的)有:fish, sheep, deer鹿子, Chinese, Japanese
七)一般只有复数,没有单数的有:people,pants, shorts, shoes, glasses, gloves, clothes, socks
八)单词形式不变,既可以和帆冲是单数也可以是复数的有:police警察局,警察, class班,同学, family家,家庭成员
九)合成的复数一般只加主要名词,多数为后一个单词。如:action movie-action movies, pen pal-pen pals; 但如果是由man或woman所组成的合成词的复数则同时为复数。如:man doctor-men doctors, woman teacher-women teachers
十)有的单复数意思不同。如:fish鱼 fishes鱼的种类, paper纸 papers报纸,卷子,论文, work工作 works作品,工厂, glass玻璃 glasses玻璃杯,眼镜, orange桔子水 oranges橙子, light光线 lights灯, people人 peoples民族, time时间 times时代, 次数, chicken 鸡肉 chickens 小鸡
十一) 单个字母的复数可以有两种形式直接加s或’s。如:Is (I’s), Ks (K’s)。但如是缩略词则只加s。如:IDs, VCDs, SARs
十二) 特殊形式的有:child-children, man-men, woman-women, foot-feet, mouse-mice, policeman-policemen, Englishman-Englishmen
B)名词的格
当我们要表示某人的什么东西或人时,我们就要使用所有格形式。构成如下:
一)单数在后面加’s。如:brother’s, Mike’s, teacher’s
二)复数以s结尾的直接在s后加’,如果不是以s结尾的与单数一样处理。如:Teachers’ Day教师节, classmates’; Children’s Day六一节, Women’s Day三八节
三)由and并列的名词所有时,如果是共同所有同一人或物时,只加最后一个’s,但分别拥有时唤歼却分别按单数形式处理。如:Mike and Ben’s room迈克和本的房间(共住一间),Mike’s and Ben’s rooms迈克和本的房间(各自的房间)轿谨
2、代词
项目 人称代词 物主代词 指示代词 反身代词
人称 主格 宾格 形容词 名词性
第一人称 单数 I me my mine myself
复数 we us our ours ourselves
第二人称 单数 you you your yours yourself
复数 you you your yours yourselves
第三人称 单数 she her her hers herself
he him his his himself
it it its its this that itself
复数 they them their theirs these those themselves
3、动词
A) 第三人称单数
当动词是第三人称单数时,动词应该像名词的单数变动词那样加s,如下:
一)一般在词后加s。如:comes, spells, waits, talks, sees, dances, trains
二)在x, sh, ch, s, tch后加es。如:watches, washes, wishes, finishes
三)1)以辅音字母加y结尾的变y为i再加es。如:study-studies, hurry-hurries, try-tries
2)以元音字母加y结尾的直接加s。如:plays, says, stays, enjoys, buys
四)以o结尾加es。如:does, goes
五)特殊的有:are-is, have-has
B) 现在分词
当我们说某人正在做什么事时,动词要使用分词形式,不能用原形,构成如下:
一)一般在后加ing。如:spell-spelling, sing-singing, see-seeing, train-training, play-playing, hurry-hurrying, watch-watching, go-going, do-doing
二)以不发音e的结尾的去掉e再加ing。如:dance-dancing, wake-waking, take-taking, practice-practicing, write-writing, have-having
三)以重读闭音节结尾且一个元音字母+一个辅音字母(注意除开字母组合如show –showing, draw-drawing)要双写最后的辅音字母再加ing。如:put-putting, run-running, get-getting, let-letting, begin-beginning
四)以ie结尾的变ie为y再加ing。如:tie-tying系 die-dying死 lie-lying 位于4、形容词的级
我们在对两个或以上的人或物进行对比时,则要使用比较或最高级形式。构成如下:
一) 一般在词后加er或est(如果是以e结尾则直接加r或st)。如:greater-greatest, shorter –shortest, taller –tallest, longer –longest, nicer- nicest, larger -largest
二)以重读闭音节结尾且1个元音字母+1个辅音字母(字母组合除外,如few-fewer fewest)结尾的双写结尾的辅音再加er /est。如:big-bigger biggest, red-redder reddest, hot-hotter hottest
三) 以辅音字母+y结尾的变y为i加er/est。如:happy-happier happiest, sorry-sorrier sorriest, friendly-friendlier friendliest(more friendly most friendly), busy-busier busiest, easy-easier easiest
四)特殊情况:(两好多坏,一少老远)
good/well - better best many/much - more most bad/ill – worse worst
little- less least old- older/elder oldest/eldest far- farther/further farthest/furthest
5、数词 (基变序,有规则;一、二、三,自己背;五、八、九、十二;其它后接th;y结尾,变为i, eth跟上去。) first, second, third; fifth, eighth, ninth, twelfth; seventh, tenth, thirteenth, hundredth; twenty-twentieth, forty-fortieth, ninety-ninetieth
二、初一英语语法——句式
1.陈述句
肯定陈述句 a) This is a book. (be动词)
b) He looks very young. (连系动词)
c) I want a sweat like this. (实义动词)
d) I can bring some things to school. (情态动词)
e) There’s a computer on my desk. (There be结构)
否定陈述句 a) These aren’t their books. b) They don’t look nice.
c) Kate doesn’t go to No. 4 Middle School. d) Kate can’t find her doll.
e) There isn’t a cat here. (=There’s no cat here.)
2. 祈使句
肯定祈使句 a) Please go and ask the man. b) Let’s learn English!
c) Come in, please.
否定祈使句a) Don’t be late. b) Don’t hurry.
3. 疑问句
1) 一般疑问句 a) Is Jim a student? b) Can I help you? c) Does she like salad?
d) Do they watch TV? e) Is she reading?
肯定回答: a) Yes, he is. b) Yes, you can. c) Yes, she does. d) Yes, they do. e) Yes, she is.
否定回答: a) No, he isn’t. b) No, you can’t. c) No, she doesn’t. d) No, they don’t. e) No, she isn’t.
2) 选择疑问句 Is the table big or small? 回答 It’s big./ It’s small.
3) 特殊疑问句
① 问年龄 How old is Lucy? She is twelve.
② 问种类 What kind of movies do you like? I like action movies and comedies.
③ 问身体状况 How is your uncle? He is well/fine.
④ 问方式 How do/can you spell it? L-double O-K.
How do we contact you? My e-mail address is [email protected].
⑤ 问原因 Why do you want to join the club?
⑥ 问时间 What’s the time? (=What time is it?) It’s a quarter to ten a.m..
What time do you usually get up, Rick? At five o’clock.
When do you want to go? Let’s go at 7:00.
⑦ 问地方 Where’s my backpack? It’s under the table.
⑧ 问颜色 What color are they? They are light blue.
What’s your favourite color? It’s black.
⑨ 问人物 Who’s that? It’s my sister.
Who is the boy in blue? My brother.
Who isn’t at school? Peter and Emma.
Who are Lisa and Tim talking to?
⑩ 问东西 What’s this/that (in English)? It’s a pencil case.
What else can you see in the picture? I can see some broccoli, strawberries and hamburgers.
11问姓名 What’s your aunt’s name? Her name is Helen./She’s Helen.
What’s your first name? My first name’s Ben.
What’s your family name? My family name’s Smith.
12 问哪一个 Which do you like? I like one in the box.
13 问字母 What letter is it? It’s big D/small f.
14 问价格 How much are these pants? They’re 15 dollars.
15 问电话号码 What’s your phone number? It’s 576-8349.
16 问谓语(动作) What’s he doing? He’s watching TV.
17 问职业(身份) What do you do? I’m a teacher.
What’s your father? He’s a doctor.
三、初一英语语法——时态
1、一般现在时 表示普遍、经常性的或长期性的动作时使用一般现在时,它有:
Be 动词:She’s a worker. Is she a worker? She isn’t a worker.
情态动词:I can play the piano. Can you play the piano? I can’t play the piano.
行为动词:They want to eat some tomatoes. Do they want to eat any tomatoes? They don’t want to eat any tomatoes.
Gina has a nice watch. Does Gina have a nice watch? Gina doesn’t have a watch.
2、现在进行时 表示动词在此时正在发生或进行就使用进行时态,结构为sb be v-ing sth + 其它.
I’m playing baseball. Are you playing baseball? I’m not playing baseball.
Nancy is writing a letter. Is Nancy writing a letter? Nancy isn’t writing a letter.
They’re listening to the pop music. Are they listening the pop music? They aren’t listening to the pop music.谢谢采纳!
❹ 英语十大词性用法
1、名词:noun n.表示人或事物的名称。举例: milk 牛奶。
2、代词:pronoun pron.代替名词、数词、形容词等,来进行句式简化。举例:it 它。
3、形容词:adjective adj.用来修饰名词,表示人或事物的特征 。举例:happy 高兴的。
4、副词: adverb adv.表示数目或顺序 。举例: quickly 迅速地。
5、动词:verb v.表示动作或状态。举例 :cut 砍、割。
6、数词:numeral num.修饰动、形、副等词,表示动作特征 。举例 :three 三。
7、冠词:article art.用在名词前,帮助说明名词所指的范围。举例: a 一个。
8、介词:preposition prep.用在名词或代词前,说明它与别的词的关系 。举例:at 在...
9、连词:conjunction conj.表示人或事物的名称。举例:and 和。
10、感叹词:interjection interj.代替名词、数词、形容词等。举例:oh 哦。
(4)英语语法专业知识点扩展阅读
1、名词可作主语、宾语,有时也可作定语。
2、.动词,可用作谓语,不定式to do等。
3、形容词可作定语修饰名词,也可单独使用,作表语。
4、副词可单独使用,也可以修饰动词和形容词。
5、代词可作主语,也可作宾语或者表语。
6、介词可与动词构成词组,也可以与名词构成介词短语,作表语、状语等。
7、数词作定语与名词共用,或者构成时间。
8、连词,顾名思义,连接两个句子,并能表示两个句子之间的关系。
9、冠词,加在名词前面,表示限定(the)和数量(a/an)。
10、感叹词用于表达一种惊奇,生气,喜悦等感情。
❺ 高中英语语法知识归纳
一、非谓语动词
“非谓语动词”可分为动词不定式、动名词和分词。它在句子中的作用很多:除了不作谓语外,它可以充当主语、宾语、表语、定语、状语与复合宾语(主语补语或宾语补语)。有些及物动词后面接不带to的不定式作复合宾语。这些动词归纳如下:一感(feel).二听(hear,listen to),三让(have,1et, make),四看(see,watCh,notice,observe)。再加上help somebody(to)do something和美国英语look at somebody do somthing。还有“二让”属特殊:get somebody to do something 与keep somebody doing。而有些及物动词后面接动名词(the -ing form)作宾语。这些动词归纳为一句话:Papa C makes friends。这是由如下动词的开头字母组成:permit,advise, practise,avoid,consider,mind, allow,keep,enjoy,suggest, finish,risk,imagine,escape,need,delay,stand(忍受)。 为了容易记住,也可以编成顺口溜:“允许完成练习,建议避免冒险,考虑延期逃跑,喜欢保持想象,需要反对忍受”。其相对应的动词依次是:permit/allow,finish,practise;
advise/suggest, avoid,risk: consider, delay, escape/miss; enjoy/appreciate, keep, imagine; need/want/require,mind. can't help/can’t stand。
二、复合句
1、学生最容易混淆的是定语从句与同位语从句的区别。
例如:A、The news that our team has won the match is true. (同位语从句)
B、The news that he told us surprised everybody here. (定语从句)
关键的区别在于连接或关系代词that:有意义的是定语, 无意义的是同位。因为引导定语从句的that在从句中作主语或 宾语,而引导同位语从句的that只起到连接词的作用。
2、接着容易混淆的是引导定语从句的关系代词that与 which:that之前是不定(代词)、序数(词)、(形容词)最高级:which之前是介词短语与逗号(非限制性)。
例如:A、All that we have to do is to practise every day.
B、The first lesson that I learned will never be forgotten.
C、I have lost my pen,which I like very much.
D、The house in front of which there is a garden is my home.
三、It的用法
1、It除了代替人和物以外,还可以作形式主语。而真正的主语(不定式、动名词或从句)则放于谓语或表语之后。
例如:It is nor easy to finish the work in two days.
然而有少数表语之后接动名词作真正的主语。这些表语是:无助(no help)、无用(no use)、没好处(no good);工作(hard work)、费时(a waste of time)、又危险(a danger)。
例如:A、It is no use crying over spilt milk.
B、It is a waste of time waiting for him.
2、It还可以作形式宾语。通常下列动词后面可接it作形式宾语:2f2tcjm(find,feel,think,take,consider,judge, make)。
例如:A、He made it clear that he was not interested in this subject.
B、I think it no use arguing with him.
3、It用于强调句式。要强调句子的某一部分(主语、宾语、 状语),可以把it当作先行词。这种句子的结构是:It is(was)+ 被强调部分+that(who)+句子的其余部分。
例如:A、It iS Professor Lin who teaches us English—(强调主语)
B、It was in Shanghai that l saw the film.—(强调状语)
C、It was in 1990 that I worked in the factory.(同上)
但要注意与定语从句的区别。
例如:D、It was 1990 when I worked in the factory.(定语从句)
在强调句式里,我们把强调结构It is(was)…that除去,句子还很完整。如例句C。而例句D就不能。
四、倒装结构
学生容易混淆的是全部倒装与部分倒装。如何区分之,编个顺口溜:副(adv.)介(prep.)提前全倒装,其它句式部分倒;否定提前倒助动,让步状语倒表语;复合句式倒主句,不
倒装的属特殊。下面举例说明:
A、Here comes the bus.(副词提前,全倒装)
B、Here he comes.(代词作主语,不倒装)
C、In front of the house lies a garden.(介词短语提前,全倒装)
D、Never shall I do this again.(否定词提前,部分倒装)
E、Young as he is ,he knows a lot.(让步状语从句,表语倒装)
F、Only when he told me did I realize what trouble he was in.(only 修饰状语,主句倒装)
G、Only he can save the patient.(only修饰主语.不倒装)
H、Not only will help be given to people,but also medical treatment will be provided.(否定词提前,部分倒装)
I、Not only he but also we like sports.(连接两个主语,不倒装)
五、虚拟语气
虚拟语气也是一个难点。所谓虚拟语气是表示说话人的愿望、假设、猜测或建议,而不表示客观存在的事实。它通过句子的谓语动词的特殊形式来表示。现归纳如下:纯假设,用虚拟,动词时态退一级:条件句,分主从,主句谓语前加would (should,could,might);表愿望,用虚拟,wish后面接宾语(从句):现在过去与将来,动词时态退一级:提建议,用虚拟,宾语(从句)动词用(should)do:俩建议,三要求,再加坚持与命令(suggest,advise,demand,require,request,insist,order):It is time和eoukd rather,后接丛句用虚拟:部分主语从句中, 谓语用虚拟结构 (It is necessry /important/natural/natural/strange/strange that……should do)。 下面举例说明:
A、If you came tomorrow,we would have the metting. (条件句虚拟)
B、Without air,there would be no living things.(同上)
C、We wish we had arrived there two hours earlier.(表示愿望虚拟)
D、He demanded that we (should)start right away.(表示建议虚拟)
E、It is(high)time that we left (should leave)now.(特殊从句虚拟)
F、I would rather you gave me the book.(同上)
G、It is necessary that we should clean the room everyday,(主语从句虚拟)
H、He speaks English so fluently as if he were English. (特殊从句虚拟)
总之,语法是从语言实践中总结出来的规则,要边学边寻找规律,以提高学习效率。在学习中不能只记一些语法规则,要进行实践练习。通过练习,可以发现和纠正错误,而且有利于况固所学知识。