人教9年级Unit13 单词用法

Unit 13 1 litter v. 乱扔=throw away don’t litter the classroom with waste paper . It’s impolite to litter everywhere. n. 垃圾；废弃物 It’s impolite to drop litter everywhere. Don’t throw the litter into the river. 2 bottom n. 底部；最下部 -----反义词 top at the bottom of ---反义词at the top of the bottom of ....的底部 bottom adj 底部的 bottom line 底线 3 fisherman n. 渔民；钓鱼的人-----复数 fishermen 4 coal n. 煤；煤块 Factories that burn coal pollute the air with a lot of black smoke .烧煤的工厂因为大量的黑烟污染空气 5 ugly adj. 丑陋的；难看的--反义词 beautiful 6 advantage , n. 优点；有利条件--- 反义词 disadvantage the advantage of bike riding 骑自行车的优势 7 cost v. 花费 sth. cost sb. +钱The bike cost me 300 $. n. 花费；价钱 the cost of living 生活费 take : It takes me an hour to do my homework every day.每天花费我一小时做作业。 spend I spent100$ on the books 我花100美元买书.He spent 100$ (in)buying the bike他花100 美元买自行车 pay for I paid for the bill 我为账单付费 pay+钱for+物 I paid 20$ for the book. 8 wooden adj. 木制的；木头的 wooden chopsticks --n wood 木头 ---woods