人教版高中英语必修三unit4知识点汇总及练习.doc

Unit 4 Astronomy: the science of the stars

单元要点预览
词汇
部分
词语
辨析
1. loudly / loud / aloud 2. unlike / dislike
3. remain / leave
4. climate / weather 5. now that / since / because / as
词形
变化
1. violent adj.
强暴的，猛烈的
violence n.暴力，强暴；猛烈
violently adv. 强暴地；猛烈地
2. fundamental adj.基本(础)的n.[pl.]基本原则(法则)
fundamentally adv. 基本地；根本地
fundament n. 基础；根本
3. development n.
生长，发展；新情况
develop vt.
发展；产生
vi.生长；发展
developed adj. 发达的developing adj. 发展的
4. lay vt.放下；摆设；产(蛋) lay---laid---laid---laying
lie vi. 躺，平放；位于
lie---lay---lain---lying
lie n.&vi. 谎话；说谎
lie---lied---lied---lying
5. prevent vt.
预防，防止
prevention n.预防；阻止；妨碍
preventable adj.可防止的，可预防的
6. gentle adj.
和蔼的；轻柔的
gently adv.温和地；静静地

7. physics n.
物理，物理学
physicist n.
物理学家
physical adj.身体的；物理(学)的；物质的
重点
单词
1. system n.[c] 系统；体系；制度；方法
2. lay vt. (laid, laid, laying) 把……放下；摆设；铺(地毯) ；产(蛋)
3. harmful adj. 有害的；伤害的
4. exist vi. 存在；生存
5. puzzle v.(使)迷惑；(使)苦思 n.谜；难题
6. pull v.拉，拖，拔；移动 n.拉，拖；拉(引)力
7. cheer vt.&vi. (使)高兴、振奋；(对)欢呼
重点
词组
1. to begin with 以……开始；由……作为开头；首先
2. in time 及时；最终；迟早
3. in one’ s turn 轮到某人；接着
4. prevent...from 使……不做事；阻止……做某事
5. block out 挡住（光线）
6. be off = set off 出发；动身；不用上班/学/开张
7. break out (灾难、战争等)突发；爆发
8. watch out 密切注视；当心；提防
重点句子
1. It exploded loudly with fire and rock, which were in time to produce the water vapour, carbon dioxide, oxygen, nitrogen and other gases, which were to make the earth’ s atmosphere.
2. That made it possible for life to begin to develop.
3. But when I tried to step forward I found I was carried twice as far as on the earth and fell over.
重点语法
宾语从句和表语从句（见语法部分）

语言要点
Ⅰ.词语辨析
1. loudly / loud / aloud
【解释】
loudly adv 响亮地，高声地
loud adj/adv 与sing, speak, talk连用
aloud adv 相对默读而言；出声
【练习】根据句子的意思在括号里填入适当的词。
1). Will you please speak ______?
2). It is good for you to read English ______ every morning.
3). The bomb exploded ______.
4). Is her voice ______ enough ?
5). Action speaks ______ than words (事实胜于雄辩).

2. unlike / dislike
【解释】
unlike prep. 不像，和……不同 adj. [作表语] 不相似；不同
dislike vt./n. 不喜爱，厌恶
【练习】根据句子的意思在括号里填入适当的词。
1). A good hotel manager should know his regular guests’ likes and ______.
2). Her latest novel is quite ______ her earlier work.
3). If you go on like that you’ ll get yourself _______ (like).
4). I was very interested in the lecture, ______ many of the students.

3. remain/leave
【解释】
remain vi. 仍然是；留下；剩下
常用句型：remain + n. 仍然是 remain + adj./adv./prep. 仍然是
remain + v-ed/v-ing 仍然是 remain to be done有待去做，依然要做
leave vt. 剩下，忽略或未拿或未带（某物），使或让（某人、事物）处某状态﹑某地等
常用句型：leave sb. sth. / leave sth. to sb. 给某人留下某物
leave sth (for sb) 留下，交待下(某物) leave sth to sb 将某物遗赠给某人
remaining/left两者都可以作形容词，表示“剩下的”，前者用于被修饰的名词之前，后者用于被修饰的名词之后。
【练习】根据句子的意思在括号里填入适当的词。
1). Someone ______ you this note while you were out.
2). After the earthquake, little ______ of the village.
3). He used the ______ money to buy a dictionary.
4). After buying the dictionary, he had not much money______.
5). Arriving home, I found that I’ d ______ my key in the office.
6). Don’ t leave her ______ (wait) outside in the rain.
7). She remained _______ (change) after all these years.
8). A great many things remain _______ (do).

4. climate / weather
【解释】
climate指从长时间的范围来看某地的平均气候或经常性的气候；
weather指某地一时的天气，如寒暖、晴雨和干湿的变化情况。
【练习】根据句子的意思在括号里填入适当的词。
1). We shall go out for a picnic tomorrow if the _______ is fine.
2). A drier _______ would be good for your health.
3). I couldn’t imagine what it would be like to live in a hot ________.
4). The _______ of our country is mild, but individual places experience bad ________.

5. now that / since / because / as
【解释】
都可引导原因状语从句，语气最强的是because，引导直接而明确的原因，也用来回答why的问句或用于强调句型；其次是since/now that，表示已知或明显的原因，再次是as，引导的原因是不言而喻、显而易见的；for引导的是并列分句，表推测或判断的原因，前面有逗号隔开。
【练习】根据句子的意思在括号里填入适当的词。
1). _______ everybody is here, let’s begin our meeting.
2) It was _______ he was ill that he didn’ t go to school.
3). It must have rained last night, _______ the ground is all wet.
4). _______ we are alone, we can speak freely.

Ⅱ.词性变化
1. violent adj.强暴的，猛烈的
violence n.暴力，强暴；猛烈
violently adv. 强暴地；猛烈地
2. fundamental adj.基本(础)的n.[pl.]基本原则(法则)
fundamentally adv. 基本地；根本地
fundament n. 基础；根本
3. development n.生长，发
展；新情况
develop vt.发展；产生
vi.生长；发展
developed adj. 发达的developing adj. 发展的
4. lay vt.放下；摆设；产(蛋) lay---laid---laid---laying
lie vi. 躺，平放；位于
lie---lay---lain---lying
lie n.&vi. 谎话；说谎
lie---lied---lied---lying
5. prevent vt. 预防，防止
prevention n.预防；阻止；妨碍
preventable adj.可防止的，可预防的
6. gentle adj.轻柔的
gently adv.温和地；静静地

7. physics n.物理，物理学
physicist n.物理学家
physical adj.身体的；物理(学)的；物质的
【练习】用括号内所提供词的适当形式填空。
1). The naughty boy _______ (lie) to me that the hen that _______ (lie) there just now had ______ (lay) two eggs the day before.
2). In my opinion, ________ (prevent) is more important than treatment.
3). Some programs on the Internet are full of ________ (violent) and sex.
4). With the ________ (develop) of modern industry, more and more pollution is caused.
5). China is a ________ (develop) country belong to the third world.
6). There are ________ (fundament) differences between your religious beliefs and mine.
7). His ambition is to become a great ________ (physics).
Ⅲ.重点词汇
1. system n.[c] 系统；体系；制度；方法 systematic adj 有系统的; 有条理的
[典例]
1). The solar system includes the sun and its eight planets. 太阳系包括太阳和它的八颗行星。
2). Alcohol is bad for your system. 喝酒对身体有害。
[练习] 根据句子的意思完成句子。
1). The ______ ______ (教育系统) operates very differently in the US and China.
2). He introduced us a well-designed ______ ______ (铁路系统).

2. lay vt. (laid, laid, laying) 把放下；摆设；铺(地毯) ；产(蛋)
[典例]
1). He laid his hand on my shoulder. 他把手放在我的肩上。
2). Who should we lay the blame on? 我们该责备谁?
[重点用法] lay短语：
lay eggs 下蛋 lay sth. aside 把某物放在一边；积蓄（钱）
lay sth. down 把某物放下 lay the blame on sb.责备某人
lay the table 摆桌子 lay emphasis / stress on sth. 把重点放在某事上
[练习] 根据句子的意思在括号里填入适当的词或翻译。
1). The bird ______ its eggs in other birds’ nests.
2). He is a political leader that _____ _____ _____ _____ (非常强调) individual responsibility.
3). He ______ some money ______ for rainy days.

3. harmful adj. 有害的；伤害的 harm n.&vt. 伤害（某人）
[典例]
Many people are aware of the harmful effects of smoking.
很多人都意识到吸烟的危害。
[重点用法]
be harmful to sb./sth. 对……有害
do harm to sb.= do sb. harm = harm sb. 对……有害；伤害……

[练习] 根据句子的意思在括号里填入适当的词或翻译。
1). Everyone knows that smoking is ______ to your health.
2). In many cases, too much care for children from parents might even do ______ to their growth.
3). 在阳光下看书对你的眼睛伤害很大。
_____________________________________________________________________

4. exist vi. 存在；生存 existence n. 存在
[典例]
1). Does life exist on Mars? 火星上有生命吗?
2). I can hardly exist on the wage I’ m getting. 我靠我挣的工资简直难以餬口。
[重点用法]
exist + prep. 存在于地方 exist on sth. 靠某物生存
[练习] 用exist的短语或其适当形式填空。
1). This plant ______ only ______ Australia.
2). Can you ______ ______ such a low salary?
3). I doubt the ______ (exist) of alien.

5. puzzle vt.&vi. (使)迷惑；(使)苦思 n.谜；难题
puzzled adj.无法了解的；困惑的 puzzling adj.令人费解的
[典例]
1). Her reply puzzled me. 她的回答把我弄糊涂了。
2). Their reason for doing it is still a puzzle to me.
他们为什麽要做此事我仍莫名其妙。
[重点用法]
sth. puzzles sb. 某事使某人迷惑/为难
sb. be puzzled by sth. 某人对……感到迷惑
puzzle about/over sth. 对某事感到迷惑或苦苦思索（以便理解）
puzzle one’ s brain苦思苦想；绞尽脑汁
solve a puzzle 解决一个难题
[练习] 用puzzle的适当形式填空或翻译。
1). To explain the ________ (puzzle) findings, he offers two theories.
2). I _______ (puzzle) that I haven’ t heard from Liz for so long.
3). She listened with a _______ (puzzle) expression on her face.
4). No one has yet succeeded in explaining the _______ (puzzle) of how life began.
5). He _______ (puzzle) what to do next.
6). _______ _______ _______ (使我困惑的事情) is why he left the country without telling anyone.

6. pull v.拉，拖，拔；移动 n.拉，拖；拉(引)力
[典例]
1). You push and I’ ll pull. 你来推，我来拉。
2). I felt a pull at my sleeve and turned round.
我觉得有人扯我的袖子，便转过身来。
[重点用法]
pull ahead (of sb/sth) 领先（於某人/物）
pull (sb) back（使某人）退却；撤回（某人）
pull off (sth)（指机动车辆）驶离（道路）（至路侧停车处停下） pull out (sth.) 拉掉；使分离；掏出；驶离（车站）
pull on 穿，戴上（袜子、手套等） pull together 同心协力；通力合作
[练习] 用pull短语的适当形式填空。
1). I arrived as the last train was ______ ______.
2). He ______ ______ a gun and aimed at the criminal.
3). So long as we ______ ______, there’ s no mountain top we can’t conquer.

7. cheer vt. & vi. (使)高兴、振奋；(对)欢呼
cheerful adj.高兴的 cheerless adj.不高兴的
[典例]
1). The crowd cheered loudly as the Queen appeared. 女王出现时群众高声欢呼。
2). He was greatly cheered by the news. 他听到这个消息非常高兴。
[重点用法]
cheer sb. on为某人加油 cheer (sb) up（使某人）更高兴或更快活
[练习] 用cheer的短语或其适当形式填空。
1). Your visit has greatly ______ him up.
2). The crowd ______ the runners ______ as they started the last lap.
3). You look as though you need ______ up.

Ⅳ.重点词组
1. to begin with = to start with 以……开始；由……作为开头；首先
[典例]
To begin/start with, I couldn’ t understand a single word. 起初，我一句也没弄明白。
[重点用法]
begin/start with 从……开始 begin/start sth with 从……开始……
[练习] 根据句子的意思完成句子。
1). He ______ his speech ______ a poem.
2). His speech ______ ______ a poem.
3). ____ ____ _____, pets are good friends of many lonely people, especially the old.
2. in time 及时；最终；迟早
[典例]
1). They caught the bus in time. 他们及时赶上了汽车。
2). If you keep on, you will succeed in time. 如果坚持下去，你们总有一天会成功的。
[短语归纳] time短语：
in time for sth./ to do sth. 及时；不迟 in no time 立刻；马上 at no time永不……
at one time 有个时期；曾经；一度 at a time 一次；每次
at times = sometimes 有时 all the time 一直；始终；老是
on time 按时；准时
by the time到……的时候为止 for the time being 暂时；暂且
take one’ s time不着急；慢慢来 kill time 消磨时间
from time to time 不时地，间或 many a time 常常；多次
once upon a time 从前
at the same time 同时；尽管如此 ahead of time 提前，提早
race against time 争分夺秒
time and again 一次又一次；重复地 keep time (钟表)走得准
keep bad time（钟、表）走得不准 take one’ s time 慢慢来，别急
have a good/nice/hard time (in) doing sth 做某事很……
It’ s (high/about) time that sb. did/ should do sth. 是做某事的时候了

[练习] 用time短语填空。
1). They sent the mail to me just _______ _______, before I 1eft.
2). William arrived at the theatre just _______ _______ for the play was to be on.
3). Hurry up! The concert will begin _______ _______ _______.
4). _______ _______ _______ will I give up.
5). The boy laughed and cried _______ _______ ______ ______.
6). _______ _______ _______ he was addicted to playing web games, but now he devotes himself to writing, which delights his parents.
7). Don’t try to do everything at once; take it a bit _______ _______ _______.
8). You’ll have your own office soon, but _______ _______ _______ _______ you’ ll have to share one with me.

3. in one’ s turn 轮到某人；接着
[典例]
I will see you, each in your turn. 我将要一个接着一个地看你。
[短语归纳] turn短语：
in turn轮流；一个接着一个 by turns轮流；一阵……一阵……
take turns (to do sth.)轮流（做某物）
It’s one’s turn to do sth. 轮到某人做某事了
[练习] 用turn短语填空或翻译句子。
1). She went hot and cold _______ _______.
2). 我们轮流着开车。
_____________________________________________________________________
3). 今天轮到谁发言了？
_____________________________________________________________________

4. prevent...from = stop...from = keep....from 使……不做事；阻止……做某事
[典例]
His back injury may prevent him from playing in tomorrow’ s game.
他背部的伤可能使他参加不了明天的比赛。
【用法辨析】注意: prevent / stop sb. from doing sth.中的from可省, keep sb. from doing sth.中from不可省略，因为keep sb. doing sth.是“使某人一直做某事”之意；但如在被动语态中，三者的from都不可省；当后接sb’ s doing sth. 作宾语时，只能用prevent或stop，不能用keep，因为没有keep sb’ s doing sth. 的句型。
[练习] 根据句子的意思完成句子或翻译。
1). Doctors took action to _______ _______ _______ _______ _______ (防止这种疾病的蔓延).
2). Of course I can’ t _______ your going abroad.
3). 警察阻止他们携带武器。
_____________________________________________________________________

5. block out 挡住（光线）
[典例]
That wall blocks out all the light. 那堵墙把光线都遮住了。
[短语归纳] out短语：
break out 爆发，发生 burst out 大声喊叫，突然…起来
go out 外出；过时；(灯)熄
put out 关(灯)；扑灭；生产 come out 出现，显露；出版，结果是
help out 帮助解决难题(或摆脱困境)
look out留神；注意 watch out 注意；提防
find out 找出，查明，发现
pick out挑出，辨认出，分辨出 speak out 大声地说，大胆地说
think out仔细思考某事；想出（主意等）
hang out 挂出，闲逛 knocked out (拳击中)击倒，打昏
sell out 售完(某种货物)，脱销
turn out 结果证明是 run out (of) 用完，耗尽
check out 结帐离去，办妥手续离去
hand out 分发，散发 give out 分发；用完，消耗尽；发出(光、声音等)
[练习] 用out短语填空。
1). At the end of the race his legs _______ _______ and he collapsed on the ground.
2). It’ s easy to _______ him _______ in a crowd because he is very tall.
3). His nwe book will _______ _______ next month.
4). We thought it was going to rain; it _______ _______ to be a find day.
5). We _______ _______ of/from our hotel at 5 a.m. to catch a 7 a.m. flight.

6. be off = set off 出发；动身；不用上班/学/开张
[典例]
Then we were off. 随后我们就启程了。
[短语归纳] off短语：
get off 下车 fall off 从……摔下来 take off 脱下；起飞
keep off 远离 turn off 关闭 pay off 付清，还清
set...off 给……送行 kick off 踢球
jump off 跳下 give off 散发 show off 炫耀 shut off 关闭
[练习] 用turn短语填空或翻译。
1). It is a Sunday and we _______ _______ (不用上班) today.
2). Her husband _______ _______ on a business trip somewhere.
3). There we saw a sign reading, “_______ _______ the grass”.
4). After ten years of hard work, she finally _______ _______ all her debts.

7. break out (灾难、战争等) 突发；爆发
[典例]
Fire broke out during the night. 夜间突然发生了火灾。
[短语归纳] break短语：
break away from 脱离（党派）；摆脱（控制） break down毁掉；坏掉；(计划/谈判)失败
break up打碎；拆散；(会议)结束；分裂(解体) break off (使)停止；中断；折断
break into sth. 强行进入某处 break one’ s word/promise食言；说话不算数
[练习] 用break短语填空。
1). A terrible tsunami _______ _______ in the southeastern countries of Asia at Christmas, 2004.
2). When do you _______ _______ for Christmas?
3). Negotiations between the two sides have _______ _______.
4). His house was _______ _______ last week.

8. watch out 密切注视；当心；提防
[典例]
Watch out! There’ s a car coming. 小心! 汽车来了。
[重点用法]
watch out for sb/sth 警惕或注意某人/事物 watch over 保护；照看
[练习] 用watch短语填空。
1). There must have been an angel _______ _______ me that day.
2). What problems should I _______ _______ _______ when buying an old house?
3). You’ ll become an alcoholic if you don’ t _______ _______.

Ⅴ.重点句子
1. It exploded loudly with fire and rock, which were in time to produce the water vapour, carbon dioxide, oxygen, nitrogen and other gases, which were to make the earth’ s atmosphere.
它(地球)巨大的爆炸喷出了烈火与岩石。最终产生了水蒸气、二氧化碳、氧、氮和其他多种气体，从而形成了地球的大气层。
[解释]“be + 不定式”结构通常用来表示“按计划或安排将要做的事情”，或表示上级对下级、父母对子女下命令，“应该做某事”或表示某事“将必然发生”。例如：
1). Here is a message for you from your head teacher: you are to go to her office after class. 你的班主任给你一个口信，要你下课后到她的办公室去。
2). The worst is still to come. 更糟糕的事情还会发生。
3). We’ ll hold a meeting tomorrow. = We are to hold a meeting tomorrow. = A meeting is to be held tomorrow. 我们明天将开会。
4). The train is to arrive in Beijing at 10: 25 am. 这趟火车将于上午10: 25到达北京。
[练习] 完成句子或翻译。
1). Here is