高中英语必修5第一单元重点、难点
Unit One Great scientists
1、Which scientist discovered that objects in water are lifted up by a force that helps them float?(p1)
那位科学家发现水中有一种力量能帮助物体漂浮？
discover
用法归纳
(1)发现某东西
Columbus discovered America in 1492. 1492年哥伦布发现美洲大陆。
Do you know who discovered electricity? 你知道是谁发现电吗？
(2)发现某情况
A. 跟从句
She discovered that he was excited. 她发现他很激动。
It was never discovered how he died. 永远也没发现他是怎么死的。
B. 跟名词或代词
We soon discovered the truth. 我们很快就发现了真相。
He discovered his mistake too late. 他发现他的错误太迟了。
C. + O + OC
Entering the room, I discovered him sitting near the fire, reading.
一进房子，我发现他坐在火边看书。
We discovered her to be a good cook. 我们发现她是个好厨师。
小鹿图片
特别提示：
discover后的宾语补足语多用doing或to be结构。
【小试】：
1. So far nobody has claimed the money in the library.
折扣价格怎么算A. discovered B. to be discovered C. discovering D. having discovered
2. There were many talented actors out there just waiting .
A. to discover B. to be discovered C. discovered D. being discovered可乐鸡翅家常做法
Key: ①A ②B
2、Who put forward a theory about black holes?(p1) 谁提出了有关黑洞的原理？
put forward
( 1 ) 提出
Are you rious in putting forward such an idea? 提出这样的一个想法你不是认真的吧？
( 2 ) 推荐；提名
May I put your name forward as a possible monitor?
( 3 ) 提前；拨快
The warm weather has put the crops forward by a month.
Put the clock forward by ten minutes.
3、Do you know how to prove a new idea in scientific rearch?(p1)
墨西哥文化你知道在一项科学实验中怎样来证明一个新观点吗？
prove vt. & vi.
用法归纳：
肤质测试
（1）证明；证实(vt.)
A. + n. / pron.
He proved his courage in battles. 他在战斗中证实了他的勇敢。
Can you prove it to the court? 你能向法庭证明这一点吗？
B. + 从句
Can you prove where you were last night? 你能证明昨天晚上在什么地方吗？
C. + n. / adj. / to be 构成的复合结构
One mad action is not enough to prove a man mad. 一次疯狂的行为不足于证明这个人就是疯子。
He proved himlf to be an interesting man on the long journey.
长途旅行中他证明自己是个很有趣的人。
（2）事实证明是(link-v)
A. + 形容词
What he said proved right. 他说的话后来证明是对的。金属矿物
B. + 名词
The book proved a best ller. 事实证明那本书很畅销。
C. + to be
My suggestion proved to be better. 事实证明我的建议更好。
D. + of +抽象名词
This book will prove of great u to nior students.
事实将会证明这本书会对高中生有很大用处。
特别提示：
“prove + of +抽象名词”句型中，抽象名词前要加修饰词。如 much; great; a lot of 等。
【小试】：
1、His story proved ________.
A. truly B. true C. truth D. true not
2、Every means ________, but none proved _______.
A. have tried; successful B. has been tried; successful
C. has tried; to be successfully D. have been tried; successfully
Key: 1、B 2、B
4、Discuss in small groups the stages in tting out a new scientific idea.(p1)
分小组讨论新的科学观点的形成步骤。
t out
用法归纳
( 1 ) 动身；出发
They t out at six and hoped to arrive before dark.他们六点出发希望天黑前能到达。
( 2 ) 打算；开始；着手
He t out to write a new novel. 他开始写新小说了。
The runner t out to break the world record. 那个跑步运动员打算打破世界记录。
( 3 ) 列举；详述
网名大全He t out his ideas in simple English. 他用简单的英语阐述了自己的观点。
They t out all their reasons. 他们列举了他们所有的理由。
( 4 ) 摆好；布置
Set out the chairs for the meeting in rows of ten. 把开会用的椅子摆成十行。
The goods were t out on the shelves. 货物被摆放到货架上。
联想扩展：
t about 开始；散布 t back 往回拨；推迟 t aside 挑出；不顾；不理会 t apart 使分离；留出 t forth 动身；启程；阐明 t off 动身；出发；引爆 t onelf against 坚决反对 t out 动身；开始；装饰；摆放 t out to do sth 着手做 t about doing sth着手做
【小试】：
1、It’s ten years since the scientist _____ on his life’s work of discovering the valuable chemical.
A. made for B. t out C. took off D. turned up
2、Having decided to rent a flat, we _____ contacting all the accommodation agencies in the city.
A. t about B. t down C. t out D. t up
3、Rita ______ two hours every Sunday afternoon to spend with her son.
A. t out B. t away C. t aside D. t off
4、The funny story ____ a loud laugh in the classroom.
A. got off B. t off C. took off D. turned out
Key:①B ②A ③C ④C
5、Think of a method. 想一个方法。（p1）
think of
用法归纳：
（1）想起；记起
Sorry, I didn’t think of your name just now. 对不起，我刚才没想起你的名字。
We should think of some excus. 我们应该找一些借口。
合肥学院是几本（2）考虑
We should think of the matter carefully. 我们应该认真考虑这个问题。
Plea think of what I have said. 考虑一下我所说的。
（3）为…着想
Chen Guangbiao is always thinking of the poor people in the poor areas.
陈光标总是想着贫穷地区的穷人。
Don’t trust him, he only thinks of himlf. 别相信他，他只为自己着想。
