Unit 13
㈠重點詞匯
1. cube 1)立方形, 立方體, 方塊;
2)立方;三次冪
Please bring me an ice cube (一塊冰塊)out of the fridge.
The cube of 2 is 8. 2的3次冪是8.
The cube root of 27 is 3. 27的立方根是3.
cubic立方的；立方形的
2. benefit 1) vt. “對…有利”, 后面接名詞&代詞, 但不接反身代詞
Exercise benefit our health.
Your advice benefited me a great deal..
The fresh air will benefit you.
2) vi. “獲益, 得益于”,后面可接from/ by
We benefit by/ from daily exercises.
The plants benefited from the rain.
3) n.益處, 好處(可數(shù)& 不可數(shù))
I told them all the benefits of fresh air and exercise.
He got a lot of benefit from the holiday.
假期讓他受益匪淺！
Your advice was of great benefit to me.
你的忠告對我很有好處
4) for the benefit of 為了…的利益
be of benefit to sb. 對…有好處
3. property
1) 財產(chǎn); 不動產(chǎn); 所有權(quán)(不可數(shù)); (某處特定的)地產(chǎn)(可數(shù))
This small house is my only property （唯一的財產(chǎn)）
With the city developing rapidly, property in the center is becoming more expensive.
He has a large property in the county.
他在這個縣有一大宗地產(chǎn)。
2)性能, 特性(可數(shù))
One property of steel is its hardness.
堅固是鋼的特性之一
He is studying the medicinal properties of wild plants. 他正在研究野生植物的藥物特性。
Many plants have medicinal properties.
4. range
1)vt.“排列, 歸類”, 其賓語為排列對象,后接介詞on/ in/ along表示方向或趨勢
The teacher ranged the pupils along the curb.
教師叫學(xué)生沿著路邊排隊。
I ranged the books on the shelf by/ according to size. 我把書依照大小順序排在書架上。
The cards are ranged in alphabetical order
2) vi. 在…范圍內(nèi)變動 & (山脈等)綿亙, 伸展, 排列, 延及
The temperature ranges between 30 and 40 degrees centigrade.
The road ranges westward from the lake.
這條路由湖邊向西延伸
3)(不可數(shù))“范圍”, 指認知, 知識, 經(jīng)驗或能力方面的范圍
be out of one’s range
某人所不能及的, 非自己知識范圍之內(nèi)的
beyond the range of human understanding
超越人類理解的范圍
within range of vision
在看得到的范圍之內(nèi)
The houses are sold out within this price range.
在這個價位范圍之內(nèi)的房子已售完。
5.pure 1)純粹的；干凈的；無有害物質(zhì)的;純潔的；清白的；無邪的
Is this cup made of pure gold?
The water in mountain rivers is usually pure.
2)“完全的；徹底的”，常用來加強語氣
What you are saying is pure nonsense.
It is a pure accident.
6. mass n. & vi.
1) “質(zhì)量”,不可數(shù)；“團、塊、堆、片、群”，可數(shù)，常指聚成一體的沒有具體形狀的物質(zhì)；“人民、群眾”，常用作復(fù)數(shù)形式.
a mass of masses of 許多 ，大量的
A great mass of snow has fallen off the roof.
There are masses of dark clouds in the sky.
I wonder if they are truly concerned with the interests of the masses.
7. float
1) vi.“漂浮”，強調(diào)的是“保持懸在流體的表層內(nèi)或表面上的狀態(tài)而不沉下去”；“漂移，游蕩”尤指隨意地從一處移動到另一處，多作不及物動詞用，后面可以加介詞on.
Wood floats on water.
The empty boat was floating on the sea.
A balloon is floating in the sky.
2) vt.使懸浮或放入水中；使……下水
There was enough water to float the ship.
3) ◇on the float漂浮著
8. absorb
1）vt. 吸收(水、熱、光、知識、學(xué)問等)
Cotton gloves absorb sweat.
So many good ideas! It is too much for me to absorb all at once.
He was utterly absorbed in the book.
2)be absorbed in 全神貫注于…，熱衷于
absorb one’s attention =attract one’s attention
9. sensitive 1)adj. 敏感的(to)；靈敏的； 容易生氣的(about)
She is sensitive to the smell of smoking.
The child is sensitive to eggs.
那個孩子對雞蛋過敏。
He is sensitive about his failure.
人家一提到他的失敗，他就生氣。
㈡主課文講解:
1。 life 生物(活的有機物的總稱)無復(fù)數(shù)形式不加冠詞，謂語用單數(shù)
There is no life on the moon.
Marine life swims in water.
2。 range from … to… 從…分布到，在某一特定的范圍內(nèi)變化或變動
There are 200 boys ranging from 7 to 14 in age.
This plant ranges from Canada to Mexico.
Prices ranged from 5 dollars to 10 dollars.
3。 all the way
自始至終，一直，一路上，從遠道而來
All the way back, they talked about the persons and things that they could remember at school.
It is very kind of you to come all the way to see me.
4。 whatever(=anything that)作為連接代詞引導(dǎo)名詞性從句，“無論什么，任何東西，一切事物” ，語氣比what強烈。
Whatever is left over is yours.
You must do whatever is best for you.
Whatever book you want to read will be sent to your office.
She is against whatever I am fond of.
5。 available adj. 可用的，可獲得的，有效的，適宜的
sth.(受體)+ be + available + to + sb.
(主體) 某物對某人來說是可得的
The information is available to anybody.
The ticket is available to you for 3 days.
（ 三天內(nèi)有效）
sb.(主體) + be + available + for + sth.
(受體) 某人對…來說是合適的
He is not available for the job.
Are you available for a meeting tomorrow?
6. take advantage of 利用，很好地利用；投機取巧
Peter took advantage of his visit to Paris to improve his French.
I should like to take advantage of this opportunity to express my thanks for your help.
7。動詞不定式短語也可作結(jié)果狀語，但只能表示消極的結(jié)果，通常用only來加強不愉快結(jié)果的語義：
They lifted a rock only to drop it on their own feet.