| 释义 |
🔑ifif /ɪf / conjunction - used in sentences in which one thing happens or is true, depending on whether another thing happens or is true如果；假如；倘若◆If you see him, give him this letter.你要是看见他，就把这封信给他。◆We won't go to the beach if it rains.要是天下雨我们就不去海边了。◆If I had more time, I would learn another language.要是我时间能多点，我就会再学一门语言。◆If I had known about the accident, I would have gone to see her in the hospital.我要是早知道这场事故，早就去医院看过她了。◆I might see her tomorrow. If not, I'll see her this weekend.我明天也许会见到她。如果见不到，就周末和她见面。
- when; every time当…时；每次◆If I try to phone her, she just hangs up.如果我给她打电话，她就直接挂断。◆If metal gets hot, it expands.金属受热就膨胀。
- used after verbs such as “ask,” “know,” “remember”（用于 ask、know、remember 等动词后）是否◆They asked if we wanted to go too.他们问我们是否也想去。◆I can't remember if I mailed the letter or not.我不记得有没有寄出那封信。➨ WHICH WORD？词语辨析When or if? * when 还是 if？When is used for talking about something that you think will happen. * when 表示认为某事会发生I'll ask her when she comes (= you are sure that she will come).她来了后我会问问她。If is used for something you are not sure will happen. * if 表示不确定某事会不会发生I'll ask her if she comes (= you are not sure whether she will come or not).如果她来，我就问问她。
- used when you are asking someone to do something or suggesting something very politely（用于礼貌地请求或建议）◆If you would just come this way, sir.先生，这边请。◆If I could add something…我想补充…
 ●as if●as thoughused for saying how someone or something appears似乎；好似；仿佛◆She looks as if she's just gotten out of bed.她看上去好像刚起床。◆He behaved as though nothing had happened.他表现得若无其事。●even ifused for saying that what follows “if” makes no difference即使；即便◆I wouldn't do it, even if you paid me a thousand dollars.即使你付给我一千美元我也不会做那事。●if I were youused when you are giving someone advice（表示建议）如果我是你◆If I were you, I'd leave now.我要是你，现在就走。●if onlyused for expressing a strong wish（表达强烈愿望）如果…就好了，要是…该多好，但愿◆If only I had a decent car!我要是有辆像样的车多好！◆If only he'd call!他要是打电话就好了！ |