if是什么意思
3个回答

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