Vocabulary Breakthrough

A组　前缀

advantage n.→disadvantage n.缺点

B组　后缀

athlete n.→athletics n.田径运动

train vt.→trainer n.运动鞋；教练员

retire vi.→retirement n.退休

perform vi.→performance n.表演；演出

design vt.→designer n.设计师

dramatic adj.→dramatically adv.戏剧性地

compete vi.→competitor n.竞争者；对手

C组　合成

n.＋n.tracksuit n.运动服

sportswear n.运动服装；休闲服装

adv.＋n.background n.背景

D组　转化

ring n.拳击台

vi.铃响

track n.跑道

vt.追踪

score vt.得分

n.分数

同义词

buy vt.↔purchase vt.

sign n.↔symbol n.

announce vt.↔declare vt.