if引导的虚拟条件状语从句?先来看两个句子:1 I will go out tomorrow if it is fine.2 I don#30"t know if the train has arrived.句 1 中if引导的是状语从句
if引导的虚拟条件状语从句?
先来看两个句(练:jù)子:
1 I will go out tomorrow if it is fine.
句 1 中if引导的是状语从句。这个从句表示“条件”,修饰主句。整个句子的意思是“如果明天天气好,我们(拼音:men)就出去(pinyin:qù)。”句 2 中if引导的是宾语从句,充当(dāng)谓语动词don#30"t know的宾语
整个句子的意思是“我不知道火车是否到了。”
虚拟语气在条(繁体:條)件状语从句中的用法
1娱乐城. 表示与现在事实相反的情况,其句型为“ if 主语 动《繁:動》词的过去式( be 动词用 were ),主语 would / could / might / should 动词原形”。如:
If the weather were fine, we would go to Shanghai.
如澳门新葡京果天气好{hǎo},我们就去上海。(事实上天气不好)
If they had time, they would / could / might go with me.
如开云体育果他们有时间,他们就《练:jiù》会(可能)和我一起去。
2. 表示与过(繁体:過)去事《练:shì》实相反的情况。其句型为“ if 主语 动词的过去完成式,主语 would / could / should / might have 动词的过去分词”。如:
If I had taken his advice, I shouldn#30"t / wouldn#30"t / couldn#30"t have made such a mistake.
如果澳门新葡京我按照他的建议去做,我《wǒ》一定不会(不可能)犯这样的错误。
3. 表示与将来事实(繁:實)可能相反的假设和结果,其句型为“ if 主语 动词的过去式 / should 动词原形 / were to 动词原形,主语 would / could / might / should 动词原(yuán)形”。如:
The glass would break if you dropped it.
杯子摔下来会(繁体:會)打破的。(事实上没有摔下来)
If it should rain, the crops would / could / might be saved.
假如【拼音:rú】天下雨,庄稼就一定(有可能)会得救。
注意:主句中的 should 只用于第一(pinyin:yī)人rén 称,但在美国英语中, should 常被 would 代替;从(繁:從)句中的 should 可用于各种人称。
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