前缀意义例子super-超过supernatural超自然的supermarket超市extra-超越,额外extraordinary非凡out-超过,过分outnumber在数量上超过outsize超大over-过度,太overdress过度装饰vice-副,次vicechairman副主席by-副,次要的byproduct副产品byeffect副作用under-低劣,低下underproduction生产不足sub-低,次,副,亚subtropical亚热带subtitle副标题即时练习:一、请猜出下面句子划线单词的意思并翻译句子。1.Mycousinhasanexcellentvoice.Herdreamistobecomeasuperstar.1.超级明星。我的表妹有着优秀的声音。她梦想是成为一个超级明星。2.Ifyouovereat,youarelikelytobecomeoverweight.2.吃过量。如果你吃得过多,就很容易变得过胖。3.ImissedmybusbecauseIoverslept.3.睡过头。我没赶上公共汽车,因为我睡过头了。4.LinJunjing,vicepresidentofPKU,heldtheceremony.4.副校长。签字仪式有北大副校长林钧敬主持。1.by-a.somebodywhoisnextinrank2.vice-b.life3.super-c.ofsecondaryimportance4.overd.below5.bio-e.toomuch6.sub-f.morethanusual三、请写出以下单词的中文意思。1.extraordinary______________2.outdated______________3.outsmart______________4.subeditor______________5.undersize______________尺寸不足非凡过时的智胜副编辑