if [if]
conj.(表条件)如果;即使;是否;(表假设)假如
n.条件;设想.
或:
if [if]
conj.
[表示条件或假设]如果;假如,倘若,要是:
If I knew,I would say.
如果我知道,我就说了.
If I were you,I would have failed.
如果我是你,我可能会失败的.
Return if undelivered.
无法投递请退回原处.
If weather permits,we'll fly to London tomorrow.
要是天气允许,我们明天乘飞机去伦敦.
尽管;虽然;即使:
If he is little,he is strong.
他尽管年纪小,力气倒蛮大的.
If I am wrong,you are not right.
即使我错了,你也不对.
I will do it if it kills me.
我拼命也得干.
是否:
I don't know if he is at home.
问他是否在家.
Ask him if he's at home.
我不知道他是否在家.
Ask him if he'll come.
问他来不来.
当…时,就:
If I do not understand,I ask questions.
当我不懂时我就问.
If I feel any doubt,I ask.
我有疑问时就问.
[表示愿望、感叹]要是…多好:
If I hadn't lost my purse!
我的钱包要是没丢多好!
[与 will,could 等连用,表示婉言请求]:
If you will keep waiting for a while,they'll soon be back.
请你再等一会儿,他们很快就会回来了.
[与动词否定式连用,表示惊讶、愤怒等]:
If isn't Stephen!
那不是史蒂芬吗!
n.
疑问;设想;有疑问的事
条件,必需的条件;规定
短语:
as if 见 as
if and when 万一,如果;只有当…之时
if any 即使有也(极少),若有的话
if anything happens to someone 万一某人发生什么意外(或不幸);万一某人不幸死亡
if at all 如(某事)果真会发生(或出现)的话;若(某人)真要做(某事)的话
if ever 假如,要是;如果真有(我当真)
if not 要是不,即使不
if only
要是,只要
要是…多好
正是,就是,恰恰是
if only because (或if only to) 即使仅仅因为
ifs and buts 借口;托词
if so 如果是这样的话
if you please
劳驾;请
如果不愿意的话;如果你接受(我允许)的话
[口语]居然,竟然