用if造现在,过去,将来时的句子,代翻译?
If 可以引导宾语从句表示“是否”的含义,也可以引导条件状语从句表示“如果”的含义.你要问时态的话那就要搞清楚它在引导条件状语从句时所用的虚拟语气的问题了.
a.与现在事实相反的假设
条件从句 主句
一般过去时(be用were) should(would)等 +动词原形
例如:If they were here,they would help you.如果他们在这儿,
含义:They are not here,they can’t help you.
b.与过去事实相反的假设
条件从句 主句
过去完成时 should(would)等+ have+ 过去分词
例如:If he had come yesterday,I should / would have told him about it.如果他昨天来的话,我会把这件事告诉他的.
含义:He did not come yesterday,so I did not tell him about it.
c.表示对将来不大可能发生的事情的假想
条件从句 主句
一般过去时 should/would等 + 动词原形
were+ 不定式
should+ 动词原形
例如:If you succeeded,everything would be all right.如果你将来成功了,一切都会好的.
If you should succeed,everything would be all right.
If you were to succeed,everything would be all right.
含义:You are not likely to succeed,everything will be what it is now.
来自:翻译团
过去将来时,经常出现在宾语从句中 ,其次就是在特定的语言环境里。
e.g He asked if I would go shopping with him the next day
( 他问道 是否明天我能和他一起去购物 )
I said he would come to see your brother . 我说他要来看你的哥哥
语境里
eg His father went aboard seven days ago ,and he would be back the
following five days 。
他爸爸七天以前出国了, 出国5天以后他就回来了。
仅供参考
一、if作为连词,引导条件状语从句,它表示的意思是“假如”“如果”等。在复合句中如果主句用将
来时,则if引导的状语从句用一般现在时。例如:
1. If itdoesn’train, we will go to the park next Sunday. 如果天不下雨,下周星期天我们将去公园。
2. If you ask him,he will help you.如果你求他,他将会帮助你。
if句型的用法2:引导让步状语从句
二、if还可以引导让步状语从句。这时if当作“即使是”,“虽说”解。例如:
1. If she’s poor,at least she’s honest. 虽说她很穷,但至少她还是诚实的。
2. I’ll do it, even if it takes me all the afternoon. 虽然会花费我一下午的时间,我还是要做这事。
3. If I am wrong,you are wrong, too. 即使说我错了,那么你也不对。
if句型的用法3:引导时间状语从句
三、if引导时间状语从句,当if做“当”或“无论何时”解而不含有条件之义时,if从句中的时态与主句中的时态相同。例如:
1. If youmix yellow and blue,you get green.你将黄色与蓝色混合,便会得到绿色。
2. If she wants the servant,she rings the bell.每当她需要仆人时,她便按铃。
if的3种假设。。
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