8A Unit 4 Do it yourself. 一. 词汇拓展1. instruct v.instruction(n.)指示、说明2. decorate decoration(v.) 装饰3. usual adj. unusual(反义词)4. possible adj. impossible(反义词)5. finish v. finished(adj.) 完成的6. terrible adj. terribly(adv.)二. 重点短语1.had better (not) do sth.最好(不要)做某事2. a pair of scissors一把剪刀3.stand for代表，象征4. instead of (doing) sth.代替(做)某事5.be crazy about doing 对着迷 be crazy for sth 渴望某物 be crazy for sb 迷恋某人 be crazy to do sth 做某事是糊涂的6.put in a
