• if

    英:[ɪf]  
    美: [ɪf] 

    if 基本解释

    • conj. (表条件)如果;即使;是否;(表假设)假如
    • n. 条件;设想

    if 词态变化

    复数: ifs;

    if 中文词源

    if 如果

    来自PIE*i,那个,那里,它,词源同id,idem,yonder.用作连词指如果。

    if 英文词源

    if
    if: [OE] The Old English version of if was gif, but its initial g was closer to modern English y in pronunciation than to g, and the conjunction gradually evolved through Middle English yif to if. It is not known where it ultimately came from; it is evidently connected with Old High German iba ‘condition’ and Old Norse ef ‘doubt’, but whether it started life as a noun like these or was from the beginning a conjunction is not clear. Its surviving Germanic relatives are German ob ‘whether’ and Dutch of ‘if’.
    if (conj.)
    Old English gif (initial g- in Old English pronounced with a sound close to Modern English -y-), from Proto-Germanic *ja-ba (cognates: Old Saxon, Old Norse ef, Old Frisian gef, Old High German ibu, German ob, Dutch of "if, whether"), from PIE pronominal stem *i- [Watkins]; Klein, OED suggest probably originally from an oblique case of a noun meaning "doubt" (compare Old High German iba "condition, stipulation, doubt," Old Norse if "doubt, hesitation," Swedish jäf "exception, challenge"). As a noun from 1510s.

    if 词组搭配

    if and only if

    used to introduce a condition which is necessary as well as sufficient

    当且仅当

    witches are real if and only if there are criteria for identifying witches.

    当且仅当有标准识别女巫,女巫才是真实存在的。

    if and when

    at a future time (should it arise)

    如果,万一

    if and when the film gets the green light, be sure you've read the book first.

    万一电影得到许可,千万保证你已经读过那本书了。

    if anything

    used to suggest tentatively that something may be the case (often the opposite of something previously implied)

    如果是这样的话(之前多已提及相反的情况)

    I haven't made much of this—if anything, I've played it down.

    对此我并没有加以重视——如果是这样的话,那我是看低它了。

    if I were you

    used to accompany a piece of advice

    (表示建议)换作是我

    I would go to see him if I were you.

    换作是我,我会去见他。

    if not

    perhaps even (used to introduce a more extreme term than one first mentioned)

    [用于提出更极端的说法]甚至可能

    hundreds if not thousands of germs.

    数以百计甚至可能数以千计的细菌。

    if only

    even if for no other reason than

    即使只为了

    Willy would have to tell George more, if only to stop him pestering.

    即使只为了阻止乔治惹恼别人,威利也会告诉他更多的。

    used to express a wish, especially regretfully

    要 是…就好了

    if only I had listened to you.

    如果我听你的话就好了。

    if so

    if that is the case

    若是这样

    if 同义词解析

    if, whether

    这两个连接词均含"是否"之意。

    if: 作"是否"解时,多用于口语,引出宾语从句,不能直接跟or not连用。

    whether: 多用于书面语中,可与or或or not连用,除引出宾语从句外,还可引出主语从句、表语从句、同位语从句或与不定式连用。

    if 双语例句

    1. If you wait, all that happens is that you get older.
    如果你等待,发生的只有变老。

    来自金山词霸 每日一句

    2. If you love life, life will love you back.
    热爱生活,生活也会厚爱你。

    来自金山词霸 每日一句

    3. If you're not satisfied with the life you're living, don't just complain. Do something about it.
    对于现况的不满,不能只是抱怨,要有勇气作出改变。

    来自金山词霸 每日一句

    4. If you're lonely when you're alone, you're in bad company.--Jean Paul Sartre
    如果你独处时感到寂寞,说明没有把自己陪好。

    来自金山词霸 每日一句

    5. Friendship means understanding, not agreement. It means forgiveness, not forgetting.It means the memories last, even if contact is lost.
    友情是理解,不是妥协;是原谅,不是遗忘。即使不联系,感情依然在。

    来自金山词霸 每日一句

    if 实用场景例句

    If I were you, Mrs Gretchen, I just wouldn't worry about it...
    要是我是你,格蕾琴夫人,我一点都不会担心。

    柯林斯高阶英语词典

    I am surprised by the fuss she's making. It's not as if my personality has changed.
    她的大惊小怪令我很吃惊。显然不是我的个性改变了。

    柯林斯高阶英语词典

    Asthma drugs are not addictive and you don't need to keep increasing the dose. If anything, the reverse is true.
    哮喘药物不会造成药物依赖,你不用持续增大剂量。甚至正相反,减小剂量才对。

    柯林斯高阶英语词典

    Living together didn't harm our friendship. If anything it strengthened it...
    在一起住并没有损害我们的友谊。要说真有什么的话,它反而巩固了我们的友谊。

    柯林斯高阶英语词典

    Getting my work done! My God! As if it mattered.
    把我的工作做完!老天!好像它真的很重要似的。

    柯林斯高阶英语词典

    My husband, for some unknown reason, suggested that I loved my birds more than him: as if I would...
    我丈夫,莫名其妙地,暗示我爱鸟甚于爱他:仿佛我真如此似的。

    柯林斯高阶英语词典

    The two cousins looked as if they'd been carved from blocks of ice.
    两个堂姊妹看起来像由冰块雕刻而成。

    柯林斯高阶英语词典

    He points two fingers at his head, as if he were holding a gun...
    他把两根手指指向他的头,仿佛他正举着一支枪。

    柯林斯高阶英语词典

    His heart was pounding, as if he were frightened.
    他的心怦怦跳,似乎被吓坏了。

    柯林斯高阶英语词典

    The whole room looks as if it has been lovingly put together over the years...
    整个房间看起来好像是经过了多年的精心布置。

    柯林斯高阶英语词典

    If only it were that simple!...
    要是那么简单就好了!

    柯林斯高阶英语词典

    If only you had told me that some time ago...
    要是你早些时候告诉我该多好啊!

    柯林斯高阶英语词典

    A one-to-one meeting with the US President was necessary, if only for a deeper exchange of views.
    与美国总统一对一的会谈是必要的,即便仅仅是为了双方观点更深入的交流。

    柯林斯高阶英语词典

    She writes me often, if only to scold me because I haven't written to her...
    她常来信,即使仅仅为了责怪我还没回信给她。

    柯林斯高阶英语词典

    If ever there was the right person in the right job it was she...
    要是真的有才尽其用的人,那就是她。

    柯林斯高阶英语词典

    I became a distraught, worried mother, a useless role if ever there was one...
    我变成了一个忧心如焚的母亲,一个全无用处的角色。

    柯林斯高阶英语词典

    She understood his meaning, if not his words, and took his advice.
    她即便没听懂他的话,也明白了他的意思,并且接受了他的建议。

    柯林斯高阶英语词典

    A number of recent advances hold out if not the hope of a cure, then at least the possibility of some drug which could stop the spread of the virus...
    近来的一些进展即使不能提供治愈的希望,也至少有望研制出来某种药物来阻止病毒的传播。

    柯林斯高阶英语词典

    Even if I'm overstating the case for nutrition, at least it will result in the woman being in charge of her own symptoms...
    即便我夸大了营养的重要性,但至少它会让这个女人知道关注自己的症状。

    柯林斯高阶英语词典

    If there was any disappointment it was probably temporary...
    即便有点儿失望,也肯定是暂时的。

    柯林斯高阶英语词典

    If you will just sign here, we will arrange for your bank to deduct your payments automatically.
    麻烦您在这里签一下字,我们将联系您的银行自动扣除您的付款。

    柯林斯高阶英语词典

    I wonder if you'd be kind enough to give us some information, please?
    请问您能不能给我们提供一些信息?

    柯林斯高阶英语词典

    So, if we may return strictly to athletics again for a few minutes...
    因此,如果我们可以再花几分钟重新回到田径运动话题上来的话……

    柯林斯高阶英语词典

    If I could just make another small point about the weightlifters in the Olympics...
    请允许我就有关奥运会举重运动员的问题再补充一点。

    柯林斯高阶英语词典

    I'm working on my fitness and I will be ready in a couple of weeks, if not sooner...
    我正在调养身体,最多两三周以后就可以了。

    柯林斯高阶英语词典

    Sometimes, that standard is quite difficult, if not impossible, to achieve...
    有时即便有可能达到那个标准,那也是非常困难。

    柯林斯高阶英语词典

    I wonder if I might have a word with Mr Abbot?
    请问我能否和阿博特先生说几句话?

    柯林斯高阶英语词典

    He asked if I had left with you, and I said no...
    他问我是否和你一块儿离开的,我说不是。

    柯林斯高阶英语词典

    You'll feel a lot better about yourself if you work on solutions to your upsetting situations...
    如果你设法找到解决自己麻烦的办法,你自我感觉会好得多。

    柯林斯高阶英语词典

    She gets very upset if I exclude her from anything...
    要是有什么事情我不让她参加,她会非常难过。

    柯林斯高阶英语词典

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