例:I've been in and out of the bar ever since LeBron James came .口语中还常用来表示拒绝:不用了。例:A: Do you want some coffee?
Unit 1How can we become good learners?textbook[tekstbuk]n. 教科书;课本conversation[kɔnvəseɪʃn]n.交谈;谈话aloud[əlaud]adv.