A lead-in to Unit 2 Working the land

1. A lead-in to Unit 2 Working the land 华南师范大学外文学院 陈丽如 Jacqueline

2. Steps of growing crops Seed selection选种 Ploughing 犁地 Turning over the soil翻土 Sowing播种 Weeding除草 Fertilization施肥

3. New words： peasant ['pez(ə)nt] n. 农民；乡下人 rice yield 水稻产量 Before farming season, peasants will gather around the seeds and try to select the best of them. It's believed that the better the seeds are, the higher the rice yields will be.

4. New words： plough[plaʊ] vt. 犁；耕 raise[reɪz] vt. 饲养 farm cattle 耕牛 Traditionally,Chinese peasants always raise farm cattle to plough land for them so that they can save energy as well as improve efficiency.

5. New words： loosened['lu:sənd] adj. 松的；疏松的 oxygen['ɒksɪdʒ(ə)n]n. 氧气 root[ruːt] n. 根 After being turned over, the soil becomes loosened and allows more oxygen to be kept inside, which is necessary for the roots of crops.

6. New words： ridge[rɪdʒ] n. 垄 dig[dɪg] vt. 挖，掘 （过去式dug） seeding machine 播种机 Peasants in the past had to bend over the land and put the seeds into the ridges they had dug, which was so tiring. Nowadays, peasants get help from seeding machines that save them lots of time and energy.

7. New words： weed[wiːd] vt. 除草n.杂草 nutrition[njʊ'trɪʃ(ə)n] n. 营养 earth[ɜːθ] n. 土地，土壤 absorb [əb'zɔːb; -'sɔːb] vt. 吸收 Before fertilization, peasants will weed the land so that all the nutritions in the earth and water can be absorbed by the crops rather than the weeds.

8. New words： fertilizer['fɜːtɪlaɪzə] n. 肥料 animal waste 动物粪便 artificial[ɑːtɪ'fɪʃ(ə)l] adj. 人造的； Basically, there are two kinds of fertilizers. One is natural fertilizer made from animal waste. The other is artificial fertilizer,or chemical fertilizer.

9. Do you remember all the steps?

10. Video: Yuan Longping- Father of hybrid rice. Questions: 1.What’s the most important achievement that Yuan Longping has achieved? 2.What positive personalities does Yuan Longping have? 3.What great influence did Yuan Longping bring to the whole world?