选择性必修第四册 UNIT 3 SEA EXPLORATION 用所给词的适当形式填空，并背诵短文。 withdraw；set sail；channel；applaud；behold；mercy The Ming Dynasty desired to strengthen the bonds with some Western countries and between 1405 and 1433，seven large fleets under the command of Zheng He 1.set sail from the South China Sea.They sailed across the Indian Ocean to the east coast of Africa，along the marine 2.channels which had been extended by the former merchants and explorers.They took gold，silk and spices to the African royal families and negotiated trade deals with them.Meanwhile，with advanced weapons in hand，they had 3.mercy on rather than exploited，murdered or arrested the people in other countries, who in turn 4.applauded them.They also logged many tales that had happened along the way.Although China 5.withdrew from further expeditions after 1433，these fleets were a sight 6.to behold and were in a league of their own at that time. To reach out across the sea remains a strong desire today.The ancient sea routes travelled by Zheng He are being revisited with the 21st Century Maritime Silk Road. 提示：加底纹词汇为本单元复现词汇 1 extend vt.扩展；使伸长；延长(→extensive adj.广泛的；广阔的；大量的→extension n．延长；扩大) [基础检测]———单句语法填空 ①By this time, the fire had extended to the 5th floor of the dormitory building. ②These courses are based on a weekly two－hour class, extending (extend) over a period of twenty－two weeks. ③If you are in need of a deadline extension (extend), simply explain the situation to the professor. [能力提升]———微写作 ④我想由衷地感谢这些年来为我们做了很多的全体老师。 I would like to extend my heartfelt gratitude to all my teachers，who have done so much for us over the years.(演讲稿) (1)extend all the way to/as far as... 一直延伸到…… extend over 遍及；覆盖 (2)extend sb.sth.(＝extend sth.to sb.) 给予某人某物 extend help/a loan to sb. 给某人提供帮助/贷款 extend an invitation to sb. 向某人发出邀请 extend welcome to sb. 向某人表示欢迎 [语料积累] ①extend a deadline/visa 延长最后期限/签证 ②Firstly, I have an extensive knowledge of our school's history and culture.(申请信) 首先，我对我们学校的历史和文化有广泛的了解。 ③Though defeated, he still extended his respect to the opponent．(主旨升华) 虽然被打败了，但他仍然向对手表示敬意。 2 mixture n．混合；结合体；混合物(→mix v．(使)混合，融合→mixed adj.混合的；混杂的) [基础检测]———单句语法填空 ①(外研版选必四U1)Ultimately, the road ahead—the road through our lives—is a mixture (mix)of choice and chance. ②Some people are happy to mix business with pleasure, but I'm not one of them. ③Looking at the signs now, I get a feeling of amazement, mixed (mix) with sadness. [能力提升]———微写作 ④我怀着焦虑和兴奋的心情期待这一天已经很久了，终于，它来了。 I had waited so long for this day, with a mixture of anxiety and excitement and finally, it came.(心理描写) (1)a mixture of… ……的混合物 (2)mix…with… 把……与……混合起来 mix up 弄错；弄乱；混淆 mix…up wi ... ...
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