浙江省温州市啸秋中学高中英语必修4课件：Unit2languagepoints.ppt

;If so=If you have ever grown some plants.; struggle for　　 struggle against 　　　　　 struggle with;3.Dr Yuan grows what is called super hybrid rice.; ______the emperor saw was quite different from_______ the old minister told him. A. What, that B. That, what C. Which, that D. What, what ;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 ;4. This special strain of rice makes it possible to produce one-third more of the crop in the same fields.;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.;5.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 from: 毕业于…;Supplement : bachelor’s degree 学士学位 master’s degree 硕士学位 doctor’s degree 博士学位;6.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。; 7. Dr Yuan searched for a way to increase rice harvest without expanding the area of fields.;They searched the man all over for money. I searched all the drawers for the missing papers.;e.g. The police searched the woods for the lost child.;search/search for/in search of;8.expand:;9. Thanks to his research, the UN has more tool in the battle to rid the world of hunger. 1) thanks to表示“幸亏,多亏”多用于表达正面意思, 相当于感谢, 在句中作状语和表语。 多亏你的帮助, 减少了许多麻烦。;2) rid…of …用法 [寓词于境] 阅读下列句子，注意rid ... of的意思和用法。 1. The man rid himself of debt. 2. It is very hard for the people to rid the earth of pollution. 3. The dentist rid him of his pain by taking out the tooth. ;[自我归纳] rid ... of的意思是“__________”，此时, rid为___词。 常构成短语rid oneself of sb. /sth.，意为“摆脱、从……中解脱”(句1)；rid sb. / sth. of sb. / sth.意为“去除、清除”（句2、句3）。;[注意] rid还可以作名词, 构成短语get rid of, 意为“摆脱掉、除掉、处理掉”。如: It’s easy to get into the habit of taking drugs but hard to get rid of it. We can’t get rid of