| 释义 |
if[if]conj. 1 [表示条件]如果:If you demand his presence,warn him in advance.如果你们要他来,就事先通知他.Return If Undelivered无法投递请退回原处If you will wait a minute,I shall go and find him.请等一下,让我去把他找来.If weather permits,...如果天气好的话,…(常略作I.W.P.) 2 [表示假设]要是,假如:If I were you,I would not go.如果我是你,我就不去.If it should rain tomorrow,the match would be postponed.要是明天下雨,比赛就延期举行.If it had not been for your help,we would not have succeeded.要不是有你们的帮助,我们就决不会成功.[注意:在书面语中可将上述三句中的助动词were,should,had移至主语前,省去if] 3 [表示让步]虽然,即使:If he said that,he didn't mean it.纵然他这样说了,他并不是当真的. 4 当,无论何时:If I don't get enough sleep I get a terrible headache.我只要一少睡就会头疼. 5 是否:I wonder if it is the right size.我不知道尺寸是否合适.[注意:在这类句子中,if等于whether,但if一般用在口语中,且不能用于句首,也不与or not连用] 6 [表示与事实相反的愿望,用过去时态的虚拟语气]要是…多好:If I were in Beijing now!要是此刻我在北京多好啊!If I had been warned!要是有人及早提醒我多好! 7 [表示惊奇或恼怒,用陈述语气的否定句]:If I haven't repeated the mistake!我真不该重犯这样的错误!
n. 1 条件;假设;规定:Your argument seems to have too many ifs.你的论据似乎假设太多了一些. 2 有疑问的事;疑问 |