英语必修三第四单元？四种非谓语动词：动词不定式、动名词、现在分词、过去分词。五种简单句：主语+谓语；主语+谓语+宾语；主语+谓语+双宾语；主语+谓语+宾语+宾补；主语+系动词+表语。六种复合句：定语从句、状语从句、四种名词性从句（主语从句、宾语从句、表语从句、同位语从句）。强调句、倒装、省略、虚拟语气、情态动词、那么，英语必修三第四单元？一起来了解一下吧。
In spite of the rapid growth of economy and technology, our environment has been seriously polluted. It is mainly because there has been a vast amount of trash. The reasons why we have more and more trash are as follows. First, the number of people who produce trash is on the increase. Second, we do not have enough space to have garbage dumped. Third, a lot of rubbish which can be reused than thrown away by people.
Here are several ways we can use to help decrease the amount of trash. First, we should get the public re-educated and let them know the fact that trash pollutes our environment and is harmful to our health. Second, we suggest our government enact strict laws to crack down upon people who litter garbage here and there. Third, we can call on our neighbors to reuse as many things as they have used as possible. Thus, we can have a cleaner environment to live in.
亚洲的沙尘暴
几百年以来,沙尘暴一直是许多亚洲国家面临的主要灾难。科学家尝试过多种方法解决这个问题,在中国,也发动了群众运动来对付沙尘暴。
沙尘暴是夹带沙尘的强烈而干燥的风。沙尘暴夹带的沙尘含量常常很大,以致于可以遮天蔽日。风力强大时可以搬动沙丘。世界上沙尘暴发生的四个主要地区是中亚、北美、中非和澳大利亚。来自内蒙的任建波是这样来描述他小时候遭遇的一次沙尘暴的：
“遇上沙尘暴是一种可怕的经历，”他说，“你一点办法也没有。那是我遭遇过的最可怕、最危险的境况。你只能祈求会活下来。那时候我觉得我会消失在沙尘下。”
中国的西北地区是中亚沙尘暴中心的一部分。沙尘暴发端于沙漠地区。因“荒漠化”越发严重，中国近年来发生沙尘暴的次数明显增加了。这是由于气候变化和人们伐树挖草，使土地变成荒漠后产生的一种作用。
沙尘暴有时候会影响北京。居民醒来时，看到昏黄的天空，狂风夹着黄沙在城里肆虐。暴风有时持续一整天，车辆开得很慢，因为浓浓的尘埃降低了能见度。
中国中央气象站能在沙尘暴到达北京前几周预报沙尘暴，但沙尘暴的力量有时很惊人。沙尘暴到来时，气象专家建议人们不要外出。家住北京的黄小梅说：“在沙尘暴中骑车真可怕。风力很强，呼吸困难，沙尘使人难受。
必修3Unit1
重点单词
1. starvev.使饿死
2. plentyn.充足;富裕
3. satisfyv.使满意
4. feast n.节日
5. originn.起源
6. trick n.诡计
7. independencen.独立
8. gatherv.集合
9. agricultural adj.农业的
10. custom n. 习俗
11.admire v.赞美
12.energeticadj.精力充沛的
13.religiousadj.虔诚的
14.socialadj.社会的
15. permission n. 许可
16.possibility n.可能性
17. apologizev. 道歉
18. sadnessn. 悲哀
19.obviousadj.明显的
20. forgive v. 原谅
重点短语
1.takeplace发生
2.in memory of 纪念
3.play a trick开玩笑
4.look forward to期望
5.as though 好像
6.have fun with sb.玩的开心
7.turn up 出现
8.keep one’s word 守信用
9.hold one’s breath屏息
选修3 Unit 2
重点单词
1.diet n. 日常饮食;食物vt. 给(病人)指定饮食
2.energy n. 精力;活力;能量;活动力
3.digestion n. 消化力;领悟
4.balance n. 天平;平衡;结余;vt. 平衡;权
5.roastvt.&vi. 烤;炙;烘;(使)...变热 ;烤过的
6.ought v.& aux. 应该;应当;宜于;理应;
7.slim a. 苗条的;纤细的;微小的 vi. 变细;
8.curiosity n. 好奇心;求知欲;珍贵的物品
9.rawa. 生的;处于自然状态的;生疏的;刺痛
10.lien. 谎言;位置;地势vi.躺;位于;说谎;欺骗
11.researchn. 调查;研究;vi. 调查;研究
12.customer n. 顾客;消费者
13.weakness n. 虚弱;缺点;弱点
14.strengthn. 力量;力气;体力;实力
15.ridvt. 使摆脱;使去掉;除去;把...消灭掉
16.amount n. 合计;总额;数量;vt. 相当于;等于
17.debtn.债;欠债;罚过;
18.glare n. 眩光;瞪眼vi.闪耀vt. 瞪着眼;怒目而视
19.gently adv. 轻轻地;轻柔地;逐渐地
20.limitn. 界限;限度;极限;范围vt. 限定;限制
21.limit adj. 有限的
22.benefit n. 利益;恩惠;受益vt. 有益vi. 受益
23.sigh n. 叹气;叹息;(风、树等)啸声vi. 叹气;叹息;(风等)呼啸vt. 叹息的说(out)
24.combine vt. 使结合;使联合;兼备;vi. 结合;化合
25.item n.条;条目;项目;条款;(一条)消息
26.packet n. (一)束、盒;包裹
重点短语
27.balanced diet 平衡膳食
28.throw away扔掉
29.amount to 合计；总共达
30.in debt欠债
31.be amazed at 对...感到惊愕
32.cut down 砍到;削减;压缩
33.be tired of对...厌倦
34.be curious about对...感到好奇
35.get away with 被放过;(做坏事)不受惩罚
36.tell lies说谎
37.get rid of 摆脱;除去
38.research of调查;研究...
39.earn one's living谋生
40.glare at怒目而视
41.benefit from得益/利于
42.take exercise 运动
43.take off从...中去掉;脱落(衣服等);起飞;迅速流行;突然大受欢迎
必修3unit3
重点单词
1.betn.赌；打赌
2.scenen.（戏剧）一场；现场
3.permitvt.&vi.许可；允许 n.通行证；执照
4.stare vi.凝视；盯着看
5.account n.说明；理由；计算，账目
6.appearance n.出现；外貌
7.patiencen.耐性；忍耐
8.sillyadj.愚蠢的；无聊的
9.jealousadj.妒忌的；猜疑的
10.unbelievableadj.难以置信的
11.rudeadj.粗鲁的；无力的
12.manner n.礼貌；风格；方式；习惯
13.scream vi.尖声叫
14.indeed adv.真正地；确实；
15.decaden.十年；十
16.humorn.幽默；诙谐
17.charactern.人物；特征；性格；角色
18.directorn.主任；导演
重点短语
19.make a bet打赌
20.go ahead 前进；往下说
21.by accident 偶然；不小心
22.account for说明；导致；做出解释
23.to be honest 说实话
24.shoulder to shoulder肩并肩
25.in rags 衣衫褴褛
26.even if即使；尽管
27.permit/allow sb. to do sth. 允许某人做某事
28.care about关心；在乎
29.get into trouble陷入困境
30.as a matter of face事实上
31.as for… 关于；就……而言
32.give attention to注意…
33.honor sb. for sth. 因…而表彰某人
必修3 Unit4
重点单词
1.astronomyn.天文学
2.atmosphere n.大气层;气氛
3.system n.系统;体系;制度
4.violent adj.猛烈的;激烈的;强暴的
5.solidn固体;立体 adj固体的;坚固的
6.explodevt.&vi.(使)爆炸;爆发
7.surfacen 表面;外表;水面 adj 表面的;肤浅的
8.harmfuladj.有害的;伤害的
9.developmentn.发展
10.spreadvt.&vi.伸展;展开;传播
11.method n.方法
12.depend vi.依靠;依赖
13.exist vi.存在;生存
14.presencen.出席;到场;存在
15.disappoint vt.使失望
16.disappointed adj.失望的
17.publishvt.出版;发行;公开;发表
18.publishing adj.出版的;出版业的
19.gravityn.地心引力;重力
20.force n.力量;暴力;(复)军队
21.graduallyvt.强制;逼迫
22.cheervt&vi(使)高兴;(对)欢呼; n愉快;欢呼
23.float vt&vi(使)浮动;(使)漂浮 n漂浮物
24.mass n.团;块;质量;大量;体积
重点短语
1.think of…as…把…看作
2.in time 及时;总有一天;终于
3.cool down 冷却
4.go by(时间)前进;推移;走过
5.put…into 把..变成;译成
6.depend on依靠;依赖;取决于
7.now that既然
8.come into existence开始存在;产生
9.be different form与….不同
10.allow sb to do sth允许….干…
11.on one’s surface 在…表面
12.as well as 也;还有….
13.prevent.. from 阻止;制止
14.escape from 从…逃跑
15.get close to 靠近;接近
16.cheer up感到高兴;感到兴奋
17.break out 突然发生
18.to one’s disappointment令某人失望的是
19.be harmful to sb 对某人有害
20.in one’s presence当着某人的面;在某人面前
必修3 Unit5
重点单词
1.ministern. 大臣
2.continent n. 大陆
3.eastwardadv.向东
4.surroundv.包围
5.harborn.海港
6.extremely adv.极端地,非常地
7.settlevt.&vi.定居，解决，平静下来
8.withinprep.在…之内
9.bordern.边界， v.与…接壤，接近
10.figure vt.&vi.估计
11.terrifyvt.恐吓
12.official n.官员adj.官方的，正式的
13.wealthy adj.富有的n.富人，有钱人
14.journeyvi.&n.旅行
15.distance n.距离
16.flown.流程 vi.流动
17.booth n.货摊
18.downtown adv.在市区 adj.市区的
19.dawn n.黎明
20.broad adj.宽阔的
重点短语
1.be/go on a trip去旅行
2.rather than而不是
3.as well as 还有
4.go through经历
5.as far as远到
6.be surrounded by被…包围
7.Settle down 定居
8.have a gift for 对…有天赋
9.be close to靠近
10.figure out合计为
11.in the distance在远处
12.at dawn在黎明
不知道有没有帮助！如果有麻烦给分
Shanghai, situated in the east of China, facing the East Sea on the east, is the largest city of China.
Shanghai is an international metropolis, and also one of the most prosperous cities of the world. Shanghai has many historic sites.
Oriental Pearl TV Tower, the famous symbol of Shanghai, is located in the Pudong Park, which is visited by millions of tourists every year.
Shanghai is also famous for some architecture, such as Shanghai World Expo Garden. Shanghai is also the seat of many international companies.
翻译
上海位于中国东部，东临东海，是中国最大的城市。
HOW LIFE BEGAN ON THE EARTH
No one knows exactly how the earth began, as it happened so long ago. However, according to a widely accepted theory, the universe began with a "Big Bang" that threw matter in all directions.After that, atoms began to form and combine to create stars and other bodies.
For several billion years after the "Big Bang", the earth was still just a cloud of dust. What it was to become was uncertain until between 4.5 and 3.8 billion years ago when
the dust settled into a solid globe. The earth became so violent that it was not clear whether the shape would last or not. It exploded loudly with fire and rock. They were in
time to produce carbon, nitrogen, water vapour and other gases, which were to make the earth's atmosphere. What is even more important is that as the earth cooled down, water
began to appear on its surface.
Water had also appeared on other planets like Mars but, unlike the earth, it had disappeared later. It was not immediately obvious that water was to be fundamental to the development of life. What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas. This produced a chain reaction, which made it possible for life to develop.
Many millions of years later, the first extremely small plants began to appear on the surface of the water. They multiplied and filled the oceans and seas with oxygen, which encouraged the later development of early shellfish and all sorts of fish. Next, green plants began to grow on land. They were followed in time by land animals. Some were insects. Others, called amphibians, were able to live on land as well as in the water. Later when the plants grew into forests, reptiles appeared for the first time. They produced young enerally by laying eggs. After that, some huge animals, called dinosaurs, developed. They laid eggs too and existed on the earth for more than 140 million years. However,
65 million years ago the age of the dinosaurs ended. Why they suddenly disappeared still remains a mystery. This disappearance made possible the rise of mammals on the earth. These animals were different from all life forms in the past, because they gave birth to young baby animals and produced milk to feed them.
Finally about 2.6 million years ago some small clever animals, now with hands and feet, appeared and spread all over the earth. Thus they have, in their turn, become the most important animals on the planet. But they are not looking after the earth very well. They are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth into space. As a result of this, many scientists believe the earth may become too hot to live on. So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.
以上就是英语必修三第四单元的全部内容，天文：星星的科学 课文你贴上来啊 地球生命起源 因为事隔颇久，没人真正了解地球上的生命是如何开始的。但是，根据一个普遍被大众接受的理论，宇宙是由“大爆炸”开始的，其将宇宙中的质量向四面八方推开。在此之后，原子开始形成和组合从而组成了恒星以及其他天体。内容来源于互联网，信息真伪需自行辨别。如有侵权请联系删除。
