人教版高一英语必修4 Unit2 Working the land language points 课件（共21张PPT）

Language points
If so=If you have ever grown some plants.
so 表示“象那样的，如前所说的”，用于代替已陈述的事。如：
-----can you pass the exam?
------I hope so.
2.Dr Yuan grows what is called super hybrid rice.
袁博士种植了被人称作超级杂交水稻的稻谷。
e.g. I don’t quite understand what you are explaining. Please watch what I am doing carefully.
What =the thing(s) that
______the emperor saw was quite different from_______ the old minister told him.
A. What, that B. That, what
C. Which, that D. All, all
2. It is pretty well understood _______controls the flow of carbon dioxide in and out the atmosphere today.
A. that B. when
C. what D. how
3. This special strain of rice makes it possible to produce one-third more of the crop in the same fields.
这种特殊的稻种使得同样的田地多收获三分之一的产量。
it 在句中作形式宾语，真正的宾语为to produce…, 结构为：动词（make, feel, think, regard…）+it +adj+ to do.
e.g. We think it important to learn English well.
4.Born in a poor farmer’s family in 1931,Dr. Yuan graduate from Southwest Agriculture College in 1953.
袁博士1931年出身于一个贫苦农民的家庭，1953年毕业于西南农学院。
graduate n. a person who has completed a university degree course. 毕业生
undergraduate 本科毕业生
post-graduate 硕士毕业生，研究生
graduate vi. complete an educational course. 常跟介词from，表示“毕业于”
graduation n. 毕业
e.g. After his graduation from college, he went to work as an engineer in a company.
=After he graduated from college, he went to work as an engineer in a company.
Supplement :
bachelor’s degree 学士学位
master’s degree 硕士学位
doctor’s degree 博士学位
5.Since then, he has devoted his life to finding ways to grow more and more rice.
从那以后，他就把毕生精力投入到水稻高产的研究中。
devote oneself to+ n/doing 献身于，致力于
注意：to 为介词，后面接v-ing.类似的短语还有look forward to, listen to, get to, reply to, apologize to, belong to, agree to等等.
6. Dr Yuan searched for a way to increase rice harvest without expanding the area of fields.
袁博士寻求一种在不扩大种植面积的情况下提高水稻产量的方法。
注意：search强调搜查，一般表示目标明确范围较小。search sb 搜身；search spl 搜查某地
search for 强调寻找，一般表示范围较大。
search for sb 寻找某人
e.g. The police searched the woods for the lost child.
警察在树林里寻找失踪的小孩。
Scientists are still searching for a cure to the common cold.
科学家们仍然在寻找普通感冒的治疗方法。
search/search for/in search of
1.The officer went up ______________the murder.
2.The thieves are ____________________the hidden treasure in the museum.
3.Birds fly to the south ______________the winter sunshine.
to search
searching for
in search of
7.Thanks to his research, the UN is trying to rid the world of hunger.
由于他的研究，联合国正在努力清除世界饥饿。
thanks to=because of ;owing to
e.g.__________________________, we won the game.
由于你的支持，我们赢得了比赛。
Thanks to your support
8.Using his hybrid rice farmers are producing harvests twice as large as before.
用他的杂交水稻种子，农民们种出比以前多一倍的粮食。
倍数词（twice/half/three times/a quarter etc.）+as + 形容词原级 +as …表示“是…的多少倍
e.g. The number of the students in our school is ___________________________ in their school.
我们学校学生的数量是他们学校的两倍。
twice as large as that
9. However, he cares little about spending the money on himself or leading a comfortable life.
但是他很少想到要把钱花在自己的身上，或享受舒适的生活。
lead a …life 过……生活。英语中少数动词，包括一些不及物动词的宾语可能是与它同源的名词类似的短语动词有：die a …death, smile a …smile, dream a … dream, live a …life, sigh a …sigh etc.
care (little/much) about-------be concerned about 关心，介意，后面跟从句时候，about常省略。
care for-----look after 照料；
like or want 想要，喜欢
e.g. Albert Einstein didn’t care much about what to wear.
Would you help to care for my pet while I am away?
10. Dr Yuan is more a farmer than a scientist.
与其说袁博士是一个科学家不如说他是一个农民。
be more than=not only 不仅仅，超过
e.g. Learning is more than reading.
be more +A +than +B 与其说是B还倒不如说是A
e.g. He is more an ordinary person than a leader.
Remember to review the knowledge! See you next time!