初三英语(人教版)Unit 2重难点解析

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【简介】感谢网友“奶油小面包”参与投稿,下面是小编精心整理的初三英语(人教版)Unit 2重难点解析(共7篇),希望能够帮助到大家。

篇1:人教版初三Unit 18 重难点解析

作者:刘世一

1. [原文] I'm beginning to get angry with him. (L.69)句中begin是终止性动词,却用了进行时态,怎么理解这一语法现象?

[精析] 在英语中,终止性动词由于动作不能延续的特性,一般情况下没有进行时态,也不与时间段状语连用。而英语中某些终止性动词如come, go, leave, begin, start, return, move等的进行时态形式,可用来表达将来的含义,本句就是这一用法。如:

They are leaving for Beijing on business.他们要出差去北京。

The Greens are moving into a new flat.格林家准备搬进新公寓。

2. [原文] However, it is still not known whether he and Irvine ... (L.70)本句是什么句子结构?

[精析] 这是一个主从复合句,whether引导的是主语从句,句首的it是形式主语。在英语中,往往采用“it is +过去分词+从句”这一结构。如“据说,据报道,据以为”等含义。如:

It is said that he is a good doctor.据说他是个好医生。

It is reported that China has sent another man-made earth satellite into orbit. 据报道,我国又发射了一颗人造地球卫星进入轨道。

3. [原文] ..., but some people wondered whether .... (L.70)动词wonder有哪些用法?

[精析] wonder这一动词在不同的句子结构中表达的意思不同:

(1) 后接“who, what, why等疑问词引导的宾语从句”、“疑问词+不定式”时,表示“想知道”。如:

The teacher wondered why she was late. 老师想知道她为什么迟到。

He wondered what happened. 他想知道发生了什么事情。

I'm just wondering how to do it. 我正想知道怎么做那件事。

(2)后接“that引导的宾语从句”、“不定式短语”时,表示“感到惊奇;对......感到惊讶”。如:

I wonder that he was off office.我对他下岗感到惊讶。

I wonder to see her looking so cheerful. 我很惊讶地发现她如此高兴。

(3)后接if或whether引导的宾语从句时,表示一种委婉的请求或疑问。如:

I wonder if you would mind giving me a hand. 我想知道你是否介意助我一臂之力。

(4)后接at 或about表示“感到惊异;感到疑惑”的意思。如:

I wonder at your allowing her to do such a thing. 我对你允许她做那样的事感到惊异。

I wonder about my future.我对我的未来感到疑惑。

4. [原文] ... live in less developed countries are quite poor. (L.71)句中developed可改为developing吗?

[精析] developed和developing是动词develop的过去分词和现在分词形式,在句中作定语,两者的区别是:(1)在时间上,现在分词表示动作正在进行,过去分词表示动作已经完成。(2)在语态上(这条规则只符合及物动词), 现在分词表示主动,过去分词表示被动。所以developed countries是“已经发展了的国家,即发达国家”,改为developing countries是“正在发展的国家,即发展中国家”,这样句意就发生了改变。再如:

We knew the surprising fact.我们知道了那个使人感到惊讶的事实。

Those surprised people didn't move at all.那些受了惊的人们呆在那儿一动不动。

篇2:人教版初三Unit 17重难点解析

作者:吕新军

1.[原文] ① But I heard him speak.(L.65) ② Suddenly, they hear someone outside shouting: ...(L.66)为什么①句中speak用原形,而②句中shouting用的是V-ing形式?

[精析] 感官动词hear后可以接动词原形和V-ing作宾语补足语,即hear sb. do或hear sb. doing。二者的区别是:前者表示后边的动作已经完成,后者表示后边的动作正在进行。试比较:

I heard him say that the matter was yet undecided. 我听见他说那件事还没决定。

I heard somebody laughing. 我听见有人在笑。

2.[原文] I'll shoot anyone who moves!

(L.66)动词shoot后如果加一个介词at,意思有变化吗?

[精析] 有。 shoot作及物动词,表示“击中”,后接被击中的对象。如:

He shot the bird dead. 他把那只鸟射死了。

当表示“向......射击”时,要用短语shoot at,此时不强调结果。如:

He shot at a dog, but missed it. 他朝狗开枪,但没打中。

3.[原文] Who would you ask for help if you were robbed? (L.66)这句话在本课中并不表示过去,而谓语动词却用的是would ask和were,这是什么语法现象?

[精析] 这是一个含虚拟语气的句子。在英语中,表达的假设或不大可能发生的事时,要使用虚拟语气。如果假设与现在事实相反或与将来事实可能相反,条件从句为“if +主语+动词过去式”, 主句为“主语+should (would)+动词原形”。(这种语法现象在以后会学习到。)如:

If I were you, I would leave him at once. 如果我是你,就立刻离开他。

句中ask sb. for help是“向某人求助”。ask sb. for sth. 是“向某人要求某物”,ask for sb. / sth. 表示“要求见某人;要求与某人谈话;要某事物”等等。如:

She asked him for advice. 她向他征询高见。

Did anyone ask for me? 有人找我吗?

Did you ask your boss for a pay increase? 你请求老板加薪了吗?

篇3:初三英语(人教版)Unit 2重难点解析

1. [原文]Have you ever watched someone surf? (L. 6)surf是动词,在这里怎么用原形?

[精析] surf是省去to 的动词不定式,在这里作感官动词watch的宾语补足语。类似用法还有,感官动词look at, see, listen to, hear, 使役动词let, have,make等,后都可以接省去to的不定式作宾补。

2. [原文] Now it is enjoyed by people all over the world. (L. 6) is enjoyed是什么谓语形式?all over是什么用法?

[精析]is enjoyed是被动语态形式。当主语为动作的承受者时,谓语要用被动语态形式,即be + 过去分词形式。这部分内容在今后还要学到。

all over是“全部、浑身、在各地”的意思,可单独使用,也可在其后接相应的词语。例如:

People all over the world love peace.全世界的人民都热爱和平。

He is wet all over.他全身都湿了。

all over the world 也可以用all the world, the whole world 来表示,但一定要注意冠词的位置。用all 时,冠词放在all之后,用whole时,冠词放在whole之前。

3. [原文] Every year...attract large numbers of tourists to the islands. (L. 6) large numbers of与a large number of 有区别吗?

[精析]没有。这两个短语都表示“许多”的意思,可以互换。如:Large numbers of / A large number of people came to the meeting from all over the country. 许多来自全国各地的人参加了会议。但是a number of / numbers of 与the number of是有区别的。作主语时,前者后接复数名词,谓语用复数形式;后者意思是“为……的总数”,后接复数名词,但谓语要用单数。试比较:

A number of students are playing in the playground.许多学生在操场上玩。

The number of students in the playground is about one hundred.操场上的学生(数量)大约有一百人。

4. [原文] For example, Jake Booth, a 21-year-old man, gave up his job in San Francisco a year ago. (L. 6) 21-year-old中的year怎么不加s?

[精析] 21-year-old是由数词 + 名词 + 形容词构成的复合形容词,其中year不可以用复数形式,词与词之间用连字号。试比较:

He is a 15-year-old boy.他是一个15岁的男孩。

The boy is 15 years old.这个男孩15岁。

另外,句中give up意思是“放弃”,作及物动词,后可以接动名词;也可以接代词,用宾格放于up之前。也可用作不及物动词。例如:

You should give up smoking. I gave it up last year.你应该戒烟。我去年就戒掉了。

She doesn't give up easily.她做任何事情都不会轻易放弃。

5. [原文] Although I haven't got a very good job, surfing keeps me very fit.( L. 6) although与though用法相同吗?

[精析] 有共同之处,也有不同点。两都可用来引导让步状语从句,表示汉语的“虽然……但是……”。但不能说although / though...but...。如:不能说:Although / Though he is very old, but he is still quite strong. 句中的but 应去掉。Although是较为正式的用语,引导的从句多位于主句前,though多用于非正式文体中,引导的从句位于主句前后都可。

注意:though可用于倒装句中,although不可。如:Young though he is , he has worked for a few years.他虽然年轻但已经工作好几年了。

6.[原文] He's gone to New Zealand on business. (L. 7) business前可以加定冠词the 吗?

[精析] 不可以。on表示“处于……状态中”,与一些名词构成特定的词组,on business出差。再如:on duty值日,on fire着火了,on holiday在度假。这些固定词组中都不能加冠词。

7. [原文] On May 17, , on his 13th birthday, his dream came true.(L. 8) come true是“实现”的意思,realize也有这一意思,它们的用法一样吗?

[精析] 不一样。这两个词语虽然可以表示同一个意思,但句法结构不同。come true的主语应是某事,而realize的主语应是某人。试比较:

His dream has come true.他的梦想实现了。

He has realized his dream.他实现了他的梦想。

另外,表示某人几岁生日是:one's + 序数词 + birthday。如:Tom's 10th birthday.

8. [原文] He went on cycling for another two hours before he finished his journey. (L. 8) 句中的journey与trip, travel均可表示“旅行”,有区别吗?

[精析] 有区别。这三个词都表示“旅行”的意思。journey 一般指较远距离的旅行,指单程;trip用得比较广泛,可以是“旅行”,也可以是“去了一下”,但都指一个往返;travel一般指到国外或远方旅行,不着重某一个目的地,有到各地“游历”的意思。请看例句:

He made a journey from Paris to Berlin.他作了一次从巴黎到柏林的旅行。

I took several trips to Guilin.我去过桂林几次。

He returned from his travels.他旅行结束回到家里。

篇4:初三 Unit 14重难点解析

作者:刘世一 张志

1. 【原文】How about this pair?... How much are they? (L.53) 第二句中的they根据上下文应指代第一句中的this pair, 但为什么用they呢?

【精析】英语中的复形名词表数量时通常与a pair of或数词 + pairs of连用,其中无论pair是单复数,通常都用复数代词指代。trousers, shoes, glasses, scissors等一般用作复数形式,作主语时,谓语动词也用复数形式。如:His trousers are black.他的裤子是黑色的。但英语中这些由两个对称部分合在一起构成一件物品的名词,其前常与... pair of搭配表示数量,意为“一双;一条;一副”等,这时若在句子中作主语时,如果pair是单数形式,谓语动词就用单数;如果pair是复数形式,谓语动词就用复数。如:

That pair of scissors was so sharp that it cut his hands. 那把剪刀很锋利,剪伤了他的手。

Two pairs of your trousers are still at the cleaner's. 你的两条裤子还在洗衣店里。

2. 【原文】 What size do you need? (L.53)如何询问衣物的号码尺寸?

【精析】就衣服、鞋类等尺寸大小提问时,常用句式What size ...?通常情况下不可用How much或How many来代替。如:

What's the size of your gloves?你的手套是多大号码的?

类似的提问还有:

What's the population of Germany?德国人口是多少?

What's the price of the house?这所房子多少钱?

What's the number of the teachers in your school?你们学校有多少名教师?

3.【原文】 Are you excited about going to Beijing?(L.53) 这句的动词是被动语态吗?

【精析】不是。句中的excited是动词excite的形容词,在句中作表词,可构成be excited about / at对......感到兴奋,be excited to do做......感到兴奋。如:

The excited old lady soon calmed down. 那个激动的老妇人很快就平静下来了。

4. 【原文】 It is a huge beautiful building. (L.56)句中的huge与big, large, great有什么区别?

【精析】 huge的意思是“巨大的;庞大的”,一般表示体积大,超过一般标准,常用于具体的事物、空间、距离、程度、容量等。例如:

The huge rock on the top of the mountain looks like a monkey. 这座山顶部的那块巨石看起来像只猴子。

The sun looks like a huge firing ball at the horizon. 太阳在地平线上看起来好像是一个巨大的燃烧着的火球。

big用法最为普遍,表示面积、范围、程度、强度或体积等是“大的”,通常只能用来形容有形的东西,较口语化。如:

This pair of shoes is too big for me.这双鞋我穿太大了。

large的意思是“大的;巨大的”,特指宽度、数量之大。big和large常能互换。large一般不用于指人。如:

This room is large /big enough to hold twenty people. 这间房间足以容纳20个人。

I found a large / big table in my room.我在我房间里看到一张大桌子。

great大多用于指重要性、特性、能力或程度(通常含褒义),可以与不可数名词连用。如:

She has a great many admirers. 她有很多爱慕者。

She lived to a great age. 她活到很大年纪。

篇5:初三Unit 15 重难点解析

作者:刘世一

1. 【原文】 How can you tell they are grateful? (L. 57)句中tell译为“告诉”句意好像不通,应该是什么意思?

【精析】 tell在此处不是“告诉”的意思,而是“判断;识别;区别”的含义。当tell与can, could, be able to等表示能力的情态动词连用时,强调辨别的能力,常用于tell sth. from sth. 结构,也可以直接跟宾语从句。例如:

Can you tell Gorge from his twin brother? 你能把乔治和他的双胞胎兄弟区分开吗?

Can you tell which answer is correct? 你能判断出哪个答案是正确的吗?

2. 【原文】 To help animals is helping people. (L. 57)请分析一下本句的句子成份。

【精析】本句是主系表结构。To help animals是不定式短语作主语,helping people是动名词短语作表语。不定式短语作主语可以用it来代替,将真正的主语放在句末。如本课中的But isn't it more important to help people than animals? 句中to help people than animals是真正的主语。

3. 【原文】 Mostly, vets helped heal horses.... (L. 58)heal与本课中的treat都有“治病;治疗”的意思,有什么不同?

【精析】 heal主要指通过治疗,而恢复健康。如:

A doctor's duty is to heal the sick.医生的职责是治病救人。

treat是个普通的用语,指接受病人,替他诊断,治病。如:

Doctors treated the patient very carefully. 医生认真地为病人治疗。

4. 【原文】 ... but the house broke in two, dropping her to the first floor and leaving the baby's bed hanging on the edge of the two-story house. (L. 60)请分析本句的句子结构。

【精析】 broke是谓语动词,三个分词短语作伴随状语,其中dropping her to the first floor and leaving the baby's bed是说明谓语动词broke的具体动作,hanging on the edge of the two-story house则是用来说明leaving的具体内容。

篇6:初三Unit 12重难点解析

作者:刘世一

1. 【原文】 ... and it has been visited by man already. (L. 46)句中man在此是什么用法?谓语是什么形式?

【精析】 man表示“(男)人”时是具体名词,前面要使用冠词或复数形式。man表示“人类”时,前不加冠词,为单数形式,作主语时,谓语动词用单数。如: Man can't live without air or water. 没有空气和水,人类就没法生存。

句子的谓语是现在完成时的被动语态,其结构是:have / has been done。如: About two hundred stamps have been collected by David. 大约有两百张邮票被大卫收集了。

2. 【原文】 No eating, drinking or smoking is allowed ... (L. 47 )请讲一下本句的主谓关系。

【精析】由形容词no修饰的词在句中作并列主语时,谓语动词的单复数要根据离它最近的主语而定,即依据就近原则来确定。如:No food or drinks are in the fridge. 冰箱里没有食物和饮料。

但如果原句的三个并列主语前没有no修饰,那么谓语动词应用复数形式,即原句可改写为:

Eating, drinking and smoking are not allowed in the computer room.

3. 【原文】 All the computers must be shut down ... (L. 47)与“关”有关的词语有哪几个?

【精析】 shut, close, shut down, turn off都有“关”的意思,但在具体语言实践中各有侧重。

shut和close表示“关”的意思时,常用来指关闭门窗,合上书本等,shut还可以表示“把......盖上”。如:

Shut / Close the door. 关上门。

Close / Shut your books. 合上书。

Please shut down the lid of a box. 请把箱盖盖上。

shut down可以用来表示“关闭(电器类)”,还可以强调(工厂、企业)“倒闭;关闭”等。如:They've shut down their factory. 他们关闭了他们的工厂。

turn off 多用来表示“关上(电灯、收音机、煤气)”等,主要强调通过旋钮开关。如:Please turn off the lights in the room when you leave. 当你离开时,请把屋里的灯关上。

4. 【原文】 ... if you set your mind to do it. (L. 48)请讲述一下有关mind短语的用法。

【精析】 本课出现的set one's mind“专心做某事”,后跟不定式或介词on(to)构成的短语。如:

I've set my mind on this plan and don't want to give it up. 关于这个计划我已经下定决心了,不会放弃。

mind作为名词组成的短语还有make up one's mind意为“下决心”;keep...in mind意为“记住......;记在心里”;come into one's mind“(想法等)浮现于(某人的)心中”。如:

Tom has made up his mind to be a teacher in the future. 汤姆已经决定将来要作一名老师。

Please keep these rules in mind. 请记住这些规则。

A good idea came into his mind. 他想起了一个好主意。

篇7:初三Unit 11 重难点解析

作者:刘世一

1. 【原文】 Come to school in your old clothes tomorrow. (L. 41) in在句中表示穿,请归纳与“穿;戴”相关的一些词语。

【精析】 汉语的“穿;戴”可用英语in, wear, have on, put on, dress等词语来表示。in后可接表示颜色和衣物的词语; wear, have on侧重于穿戴的状态,wear 有时可用进行时态;put on强调动作;dress即可表示状态,也可表示动作,但后面不能接衣物名词,可接表示人的词语。试比较:

Mary was in a red coat when she came to see me. 玛莉来见我的时候穿了一件红衣服。

The old lady is wearing a new hat today. 这位老妇人今天戴了一顶新的帽子。

Gorge always has on a black jacket. 乔治总是穿着一件黑夹克衫。

Henry was putting on his coat when I called him. 当我给亨利打电话的时候,他正在穿衣服。

The boy is old enough to dress himself. 这个男孩子已经能自己穿衣服了。

2. 【原文】 It's best to plant trees ... (L. 41)请分析It's best to do ... 句型的结构并说说其用法。

【精析】 在该句型中,it为形式主语,真正的主语是不定式,当要表示不定式动作执行者时,用It is best for sb. to do sth.,相当于sb. had better do sth.的句型。如:

It's best for you to stay at home on the rainy day. /You'd better stay at home on the rainy day.在雨天里,你最好呆在家里。

3. 【原文】 Knock a long, strong stick into the earth ... (L. 41)这里的knock与以前所学表示“敲(门)”的用法不一样吗?

【精析】 是的。knock意为“敲(门)”时是不及物动词,后接介词at 或on。如:Who is knocking at / on the door? 谁在敲门?

本句中的knock是及物动词,意为“把......打(敲)进......”,在宾语后要加相应的介词。如:Tom is knocking a nail into the wall. 汤姆正在往墙里钉钉子。

相关专题 英语难点