If

[ if ]
第1級 其它 Other
conj. 如果,倘若;即使;〈口〉是否;假設; n. 條件,設想;

?? 例句

Unless and if...not can often be used in the same way
unless和if...not的用法常常是相同的
In "if I were you" the verb "were" is in the subjunctive.
在"if I were you"中,"were"是虛擬語氣動詞。
We'll go even if it rains.
即使下雨我們也要去。
He will come if you invite him.
如果你請他,他會來的。
elseencountered without matching if
else沒有匹配的if

? 同義詞

?? 牛津釋義

f conj 1 on condition that; supposing 假如; 如果; 倘若; 要是. (a) (used with the present and present perfect tenses for highly predictable situations 與現在時態和現在完成時態連用表示預料到的情況) I'll only stay if you offer me more money. 假若你肯多給錢, 我就留下. If you have finished eating you may leave the table. 你要是吃完了, 就可以離席了. If (it is) necessary I will come at 6. 如有必要, 我6點鐘來. You can stay to dinner if you like. 你愿意的話, 可以留下一起吃飯. If anyone calls tell them I'm not at home. 有人來電話, 就說我不在家. (fml 文) If the patient should vomit, turn him over with his head to the side. 倘若病人要嘔吐, 就幫他翻過身來, 頭側向一邊. (b) (used with a past tense for imaginary situations 與過去時態連用表示假想的情況) If you learned to type you would easily find a job. 假使你學過打字, 就容易找工作了. If he were here I could explain to him myself. 要是他在這里, 我就可以親自向他解釋了. If I was a man they would have given me the job. 我要是男的, 這份工作就準給我了. Would she tell us the truth if we asked her? 我們問她, 她會告訴我們實情麼? If you liked (ie With your approval) I could ask my brother to look at your car. 你要同意的話, 我可以叫我弟弟來給你檢查一下汽車. They would have been here by now if they'd caught the early train.他們要是趕上了早班火車, 現在都該到這兒了. I wouldn't have believed it possible, if I hadn't seen it happen. 要不是親眼目睹, 我決不會相信能有這種事. =>Usage at unless 用法見unless. 2 when(ever) 無論何時; 當: If metal gets hot it expands. 金屬遇熱則膨脹. She glares at me if I go near her desk. 我一走近她的辦公桌, 她就瞪我. 3 (used with will and would as the first part of a sentence when making a polite request 與will和would連用, 作復合句的前部, 用以提出請求顯得客氣) If you will sit down for a few moments (ie Please sit down and) I'll tell the manager you're here. 請稍坐, 我這就通知經理說您來了. If you would care to leave your name, we'll get in touch as soon as possible. 請留下您的名字, 我們盡快和您聯系. 4 (used after ask, know, find out, wonder, etc to introduce alternatives 用於ask、 know、 find out、 wonder等之後, 以引導含不同可能性的情況) whether 是否 Do you know if he's married? 他結婚沒結婚, 你知道嗎? I wonder if I should wear a hat. 我不知道該不該戴帽子. He couldn't tell if she was laughing or crying. 他弄不清她是笑還是哭. Listen to the tune see if you can remember the words. 請聽這曲子--看你能不能想得起歌詞來. 5 (used after vs or adjs expressing feelings 用於表示情感的動詞或形容詞之後) I am sorry if I'm disturbing you. 很抱歉, 打攪您了. I'd be grateful if you would keep it a secret. 如予保密, 無任感激. Do you mind if I switch the radio off? 我可以關掉收音機嗎? 6 (also even if) (used when admitting that sth may be true or may happen 用於承認某事可能屬實或可能發生) although 即使; 縱然; 雖然 If he said that, he didn't expect you to take it personally. 即使他是那樣說的, 他也并不是針對你個人而言的. Even if you saw him pick up the money, you can't be sure he stole it. 就算你看見是他拾起的錢, 你也不能肯定錢就是他偷的. 7 (used before an adj to introduce a contrast 用於形容詞之前, 以引導一對比情況) although also 雖然; 盡管 It was thoughtless if well-meaning. 用意雖好, 考慮欠周. He's a real gentleman, if a little pompous at times. 他可是個正人君子, 雖然有時略顯得傲慢了些. 8 (used to express surprise, astonishment, dismay, etc 用以表示意外、 驚奇、 沮喪等) If it isn't my old friend Bob Thomson w...

?? 考研助記

i(水)+f(樹葉):如果樹葉得水就生長- 如果

?? 擴展釋義

*[if]conj. 如果, 是否, 無論何時, 假設, 即使n. 條件【計】 DOS批處理命令:根據所測試的條件決定是否執行另一條命令相關詞組: If weather permits... if only if so as if if at all if it had not been for if I were you

?? 同為「計算機」詞匯

evolve vt. 使發展;使進化;設計,制訂出;發出,散發; vi. 發展;[生]通過進化進程發展或發生;
pierce vt. 刺穿,戳穿;刺破;洞察;深深打動; vi. 進入;透入;
insurance n. 保險,保險業;保險費;預防措施; adj. [體]鞏固球隊領先局面,使對手不能因增加一分而成平局的;
saturate vt. 浸濕,浸透;使充滿;[化]使飽和;使滲進,使濕透; adj. 浸透的,滲透的;飽和的;顏色濃[深]的;
ion n. <物>離子;
shear vt. 剪羊毛;切斷;剪切;剝奪; vi. 剪切;修剪;穿越;[力]切變; n. 大剪刀;剪下的東西;剪切;[力]切力;
pulse n. 脈搏;[無線電](電磁波等)脈動;活力;有節奏的跳動(或拍打); vi. (心臟)跳動;脈動;搏動;震動; vt. 使跳動;有節奏地驅動(機器等);[電子學]施以脈沖;[無線電]脈沖地調節(電磁波);
fellow n. 同伴;男子;(大學的)研究員;(某些學院或大學的)董事; adj. 同伴的;同事的;同類的;同情況的; vt. 使…與另一個對等;使…與另一個匹敵;
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??? 情景例句

So you are Yang Mei. Nice to meet you.
這么說你就是楊梅了。見到你很高興。
That's easier said than done!
說來容易做起來難哪!
My dear friend, Mathilde. Let me tell you something. That necklace you borrowed from me wasn't a real diamond necklace. It wasn't valuable at all. The stones in the necklace were made of glass. It was worth five hundred francs at the most.
瑪蒂爾德,我親愛的朋友。讓我告訴你吧。你向我借的那條項鏈并不是一條真的鉆石項鏈。那條項鏈根本不值錢。項鏈中的寶石是玻璃做的。它最多值500法郎。
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?? 同為入門詞匯

honour n. 尊敬;榮幸;正義感;榮譽; v. 尊敬;給予表揚;信守;
shock n. 休克;震驚;震動;打擊; vt. 使休克;使震驚;使震動;使受電擊; vi. 感到震驚;受到震動;堆成禾束堆; adj. 濃密的;蓬亂的;
type n. 類型;鉛字;(印刷或打印的)文字;于…類型的; vt.& vi. 打字; vt. [醫學]測定(血型);按類型把…歸類;成為…的典型;[印刷]澆鑄(鉛字等);
operation n. 操作,經營;手術;[數]運算;作用;
search v. 搜尋,搜索;調查;搜查;探求; n. 搜索;調查;探求;
occupy vt. 占領;使用,住在…;使從事,使忙碌;任職;
pekin n. 北京寬條子綢;平民;老百姓
nut n. 螺母,螺帽;堅果,堅果果仁;難對付的人;[樂]弓根; v. 采堅果;拾堅果;
slow adj. 慢的;遲鈍的;溫和的;慢于…的; adv. 慢慢地;緩慢地; vt.& vi. (使)緩行,(使)減速; vi. 變慢;變蕭條; vt. 放慢;阻礙;
cast vt. 鑄造;投擲;投射;脫落,脫皮; n. 鑄型;演員表;輕微的斜視;投,擲骰; vi. 擲,投;計算,加;
Rome n. 羅馬(意大利首都);羅馬不是一天建成的;偉業非一日之功;入鄉隨俗;
shoe n. 鞋;蹄鐵;(汽車輪的)制動器,煞車;外胎; vt. 為…釘蹄鐵;給…穿上鞋;裝防護物;
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