词根：issue n. issuer发行人 issuance发布，发行 issuing发行物；争论点；期刊号 issuing发行(issue的ing形式)；分配；流出 12. lighten (Line3,Para6) 用法： v.become less serious or less boring or make sth.dothis(使)变得轻松愉快， (使)缓和 I)She felt the need to lighten the atmosphere. II)His mood lightened after the phone call. 词组短语 lighten up放松，不要生气 同近义词 vi减轻；发亮lamp,to alleviate t.使照亮；使轻松rest 同根词 词根：ight adj. light轻的；光亮的；容易的 lightless不发光的；无光的；暗的 lightsome轻盈的；畅快的；轻率的；明亮的 adv. light轻地 lightly轻轻地；轻松地；容易地；不费力地 n. light光，光亮；灯 lighting照明设备，舞台灯光 lightness轻盈；轻松；明亮；（颜色）浅淡 lightheartedness无忧无虑；自由自在；轻松愉快 13. negatively (Line8,Para3) 用法： adv.in a negative way消极地，否定地 I)He views all his relationships rather negatively. II)Not all employees reacted negatively to the decision 同近义词 adv.消极地；否定地in the negative 同根词 词根：negate 1111 词根：issue n. issuer 发行人 issuance 发布，发行 issuing 发行物；争论点；期刊号 v. issuing 发行（issue 的 ing 形式）；分配；流出 12. lighten (Line3,Para6) 用法： v. become less serious or less boring or make sth. do this （使）变得轻松愉快， （使）缓和 I) She felt the need to lighten the atmosphere. II) His mood lightened after the phone call. 词组短语 lighten up 放松，不要生气 同近义词 vi.减轻；发亮 lamp, to alleviate vt.使照亮；使轻松 rest 同根词 词根：light adj. light 轻的；光亮的；容易的 lightless 不发光的；无光的；暗的 lightsome 轻盈的；畅快的；轻率的；明亮的 adv. light 轻地 lightly 轻轻地；轻松地；容易地；不费力地 n. light 光，光亮；灯 lighting 照明设备，舞台灯光 lightness 轻盈；轻松；明亮；（颜色）浅淡 lightheartedness 无忧无虑；自由自在；轻松愉快 13. negatively (Line8,Para3) 用法： adv. in a negative way 消极 地，否定地 I) He views all his relationships rather negatively. II) Not all employees reacted negatively to the decision. 同近义词 adv.消极地；否定地 in the negative 同根词 词根：negate