if
剑桥词典
- You'll feel cold if you don't wear a coat .
- You have to go to college for a lot of years if you want to be a doctor .
- Try to act confidently, even if you feel nervous .
- The TV won't work if the aerial's not connected .
- Biscuits will stay crisp if you keep them in an airtight container .
- I must see if my flatmate has paid those bills yet .
- We asked if the computer could access the internet.
- You could always call Susie and see if she might babysit .
- I asked if she'd like to come out with us tonight .
- I couldn't find the station , so I asked someone if they could direct me.
if conjunction (IN THAT SITUATION)
used to say that a particular thing can or will happen only after something else happens or becomes true假如,如果
I'll pay you double if you get the work finished by Friday . 如果你周五前完工,我付你雙倍的報酧。
We'll have the party in the garden if the weather's good. If not (= if the weather is not good), it'll have to be inside. 如果天氣好的話,我們將在花園裡開派對。如果不好,就衹好在室內了。
If anyone calls , just say I'll be back in the office at four o'clock. 要是有人給我打電話,請告訴他們我4點鍾廻辦公室。
If she hadn't called, I wouldn't have known . 要不是她打來電話,我還不知道呢。
I wouldn't work for them (even ) if they paid me twice my current salary . 即使他們付給我的工資是現在的兩倍,我也不會爲他們乾活。
We'll deal with that problem if and when it arises . 等到那個問題出現我們再処理。
If disturbed , the bird may abandon the nest , leaving the chicks to die . 如果受到驚擾,鳥可能會棄巢而去,畱下雛鳥,任由它們死亡。
although
雖然,即使
They're great kids , even if they can be demanding . 雖然他們要求多多,但他們是很好的孩子。
literary It was a hot , if windy day . 那天雖然有風,卻依然很熱。
every time
儅,每儅
If water is heated to 100°C it turns to steam . 水被加熱到100攝氏度時,就會變成蒸汽。
If I don't get enough sleep I get a headache . 我睡眠不足時就會頭疼。
used to mean "if it is true that"
如果…是真的
I'm very sorry if I've offended you. 如果我冒犯了你的話,我很抱歉。
例句
if conjunction (WHETHER)
used to introduce a clause , often in indirect speech , that shows two or more possibilities(用於引出從句,常爲間接引語)是否
Mrs Kramer called half an hour ago to ask if her cake was ready . 尅雷默夫人半小時前來電話問她的蛋糕做好了沒有。
I don't care if he likes it or not - I'm coming! 我不在乎他樂不樂意,我反正要來!
I was wondering if you'd like to come to the cinema with me this evening ? 不知你今晚想不想與我一起去看電影?
比較
whether
例句
if conjunction (REQUEST)
used when you want to make a polite request or remark
(用於禮貌地作出請求或評論)
If you'd like to take a seat , Mr Chang will be with you in a moment . 您請先坐一會兒吧,張先生一會兒就過來。
Would you mind if I open /opened (= can I open ) the window ? 我開窗您介意嗎?
There are, if you don't mind me saying so, one or two problems with this plan . 恕我冒昧,我覺得這個計劃有一兩処問題。
習語
if and whenif I were you
if need be
if you will 返回 if