搜搜做题作业网混合虚拟语气可以没有
来源：学生作业帮 编辑：搜搜做题作业网作业帮 分类：英语作业 时间：2024/04/30 01:36:21
混合虚拟语气可以没有
一、虚拟语气在非真实条件句中
与现在事实相反的假设 If+主语+动词的过去式(be动词用were) 主语+should, would, could, might + 动词原形 If I had time, I would attend the meeting.
If I were you, I should seize the chance to go abroad.
与过去事实相反的假设 If + 主语 + had + 过去分词 主语+should, would, could, might + have + 过去分词 If you had taken my advice, you would not have failed in the exams.
与将来事实相反的似设 ①If+主语+动词过去式
②If+主语+were to +动词原形
③If+主语+should+动词原形 主语+should, would, could, might + 动词原形 If you came tomorrow, we would have the meeting.
If it were to rain tomorrow, the sports meeting would be put off.
If he should not come tomorrow, we should put off the meeting till next Monday.
使用虚拟条件句时要注意的几点：
1．当条件状语从句表示的行为和主句表示的行为所发生的时间不一致时,被称为“错综时间条件句”,动词的形式要根据它所表示的时间作出相应的调整.如：
If you had followed my advice just now, you would be better now.
If you had studied hard before, you would be a college student now, and you would graduate from a college in four years’ time.
2．if 省略句
在条件句中可省略if, 把were, had, should提到句首 , 变为倒装句式.如：
If I were at school again, I would study harder.
→ Were I at school again, I would study harder.
If you had come earlier, you would catch the bus.
→ Had you come earlier, you would catch the bus.
If it should rain tomorrow, we would not go climbing.
→ Should it rain tomorrow, we would not go climbing.
注意：若省略的条件句中的谓语动词是否定形式时,不能用动词的缩略形式.如：我们可以说：Were it not for the expense, I would go abroad now. 但不能说：Weren't it for the expense, I would go abroad now.
3．用介词短语代替条件状语从句.常用的介词有with, without, but for.如：
What would you do with a million dollars? ( = if you had a million dollars)
We couldn't have finished the work ahead of time without your help. ( = if we hadn't got your help)
But for the rain ( = If it hadn't been for the rain ), we would have finished the work.
4．含蓄条件句
有时为了表达的需要,在虚拟语气中并不总是出现if引导的条件句,而通过其他手段来代替条件句.
I was ill that day. Otherwise, I would have taken part in the sports meet. (副词)
He telephoned to inform me of your birthday, or I would have known nothing about it. (连词)
A man who stopped drinking water would be dead in about seven days. （定语从句）
I might have given you more help, but I was too busy. (连词)
Everything taken into consideration, they would have raiser their output quickly. (独立主格结构)
二、虚拟语气在名词性从旬中的运用
1．用于宾语从句中
① 用于wish后面的宾语从句中
wish后的宾语从句一般用虚拟语气,表示一种不可能实现的愿望.其谓语动词构成形式为:
过去时(表现在)
过去完成时(表过去)
could / would / might + 动词原形(表将来)
如：I wish (that) I were a bird and could fly freely in the sky.
I wish (that) I had met that film star yesterday.
How I wish it weren't raining now.
② 用于表示建议、愿望、命令等词后的宾语从句中,常见的动词有：demand, order, require, insist, suggest, propose, advise等.
宾语从句中的虚拟语气其结构为“should +动词原形”,should可以省略.如：
He suggested that we (should) start off early the next day.
The doctor ordered that the patient (should) be sent to hospi tal without delay.
They insisted that the boy (should) go with them.
注意：当suggest表示“暗示、表明”之意时,不用虚拟语气,应用陈述语气.如：
The smile on his face suggested that he was satisfied with our work.
当insist表示“坚持认为”之意时,不用虚拟语气,应用陈述语气.如：
The man insisted that he had never stolen the money.
③ 在would rather后的宾语从句中,也用虚拟语气,其构成为动词用过去式.如：
I would rather they didn't hear of the news.
2．用于主语从句中
It is desired / suggested / proposed / necessary / important / strange / natural/ a pity + that从句,从句中的谓语动词用“should +动词原形”,should可以省略.如：
It is suggested that the meeting should be put off till next week.
It is strange that he should have acted toward his parents like that.
注意：以上句式也可以用于陈述语气.如：
It’s strange that he didn't come yesterday.
It’s a pity that you can't dance.
在suggestion, proposal, order, plan, idea, request, advice等名词后的表语语从句和同位语从句中要用虚拟语气.其构成是“should + 动词原形”.如：
My idea is that we should think it over before accepting it.
We all agreed to his suggestion that we should go to Dalian for sight –seeing.
三、虚拟语气用在as if (as though), even if (even though) 中
如果从句表示的动作指现在状况,则用过去时；
如果表示的动作发生在过去,则用过去完成时；
如果指将来的动作,则用过去将来时.如：
He looks as if he were an artist.
She speak a English so fluently as if she had studied English in America.
Even if he were here, he could not solve the problem.
四、虚拟语气用于定语从句中
It is (high) time (that) … 句型中,定语从句的谓语动词用过去式,或should + 动词原形（其中should不能省略）.此句型意为“（现在）该……”,用来表示提议.
It is (high) time that you went to school.
It is (high ) time that we should start out.
五、用于if only引导的感叹句中
If only I were a flying bird!
= How I wish I were a flying bird!
If only I had seen the film!
= How I wish I had seen the film!
六、在含有If it were not for或If it had not been for条件句的虚拟语气中
If it were not for the rain, the crops would die.
If it had not been for your help, we couldn't have finished the work ahead of time.
= But for your help, …
= Without your help, …
= Had it not been for your help, …
七、口语交际中,虚拟语气的省略情况
若是一般过去时只保留did, could, were等助动词、情态动词或系动词；
若是过去完成时只保留had；
若是过去将来时只保留would / might.如：
一Have you found the answer to the question ?
一I wish I had.
I can't go to Suzhou with you, but I wish I would.
与现在事实相反的假设 If+主语+动词的过去式(be动词用were) 主语+should, would, could, might + 动词原形 If I had time, I would attend the meeting.
If I were you, I should seize the chance to go abroad.
与过去事实相反的假设 If + 主语 + had + 过去分词 主语+should, would, could, might + have + 过去分词 If you had taken my advice, you would not have failed in the exams.
与将来事实相反的似设 ①If+主语+动词过去式
②If+主语+were to +动词原形
③If+主语+should+动词原形 主语+should, would, could, might + 动词原形 If you came tomorrow, we would have the meeting.
If it were to rain tomorrow, the sports meeting would be put off.
If he should not come tomorrow, we should put off the meeting till next Monday.
使用虚拟条件句时要注意的几点：
1．当条件状语从句表示的行为和主句表示的行为所发生的时间不一致时,被称为“错综时间条件句”,动词的形式要根据它所表示的时间作出相应的调整.如：
If you had followed my advice just now, you would be better now.
If you had studied hard before, you would be a college student now, and you would graduate from a college in four years’ time.
2．if 省略句
在条件句中可省略if, 把were, had, should提到句首 , 变为倒装句式.如：
If I were at school again, I would study harder.
→ Were I at school again, I would study harder.
If you had come earlier, you would catch the bus.
→ Had you come earlier, you would catch the bus.
If it should rain tomorrow, we would not go climbing.
→ Should it rain tomorrow, we would not go climbing.
注意：若省略的条件句中的谓语动词是否定形式时,不能用动词的缩略形式.如：我们可以说：Were it not for the expense, I would go abroad now. 但不能说：Weren't it for the expense, I would go abroad now.
3．用介词短语代替条件状语从句.常用的介词有with, without, but for.如：
What would you do with a million dollars? ( = if you had a million dollars)
We couldn't have finished the work ahead of time without your help. ( = if we hadn't got your help)
But for the rain ( = If it hadn't been for the rain ), we would have finished the work.
4．含蓄条件句
有时为了表达的需要,在虚拟语气中并不总是出现if引导的条件句,而通过其他手段来代替条件句.
I was ill that day. Otherwise, I would have taken part in the sports meet. (副词)
He telephoned to inform me of your birthday, or I would have known nothing about it. (连词)
A man who stopped drinking water would be dead in about seven days. （定语从句）
I might have given you more help, but I was too busy. (连词)
Everything taken into consideration, they would have raiser their output quickly. (独立主格结构)
二、虚拟语气在名词性从旬中的运用
1．用于宾语从句中
① 用于wish后面的宾语从句中
wish后的宾语从句一般用虚拟语气,表示一种不可能实现的愿望.其谓语动词构成形式为:
过去时(表现在)
过去完成时(表过去)
could / would / might + 动词原形(表将来)
如：I wish (that) I were a bird and could fly freely in the sky.
I wish (that) I had met that film star yesterday.
How I wish it weren't raining now.
② 用于表示建议、愿望、命令等词后的宾语从句中,常见的动词有：demand, order, require, insist, suggest, propose, advise等.
宾语从句中的虚拟语气其结构为“should +动词原形”,should可以省略.如：
He suggested that we (should) start off early the next day.
The doctor ordered that the patient (should) be sent to hospi tal without delay.
They insisted that the boy (should) go with them.
注意：当suggest表示“暗示、表明”之意时,不用虚拟语气,应用陈述语气.如：
The smile on his face suggested that he was satisfied with our work.
当insist表示“坚持认为”之意时,不用虚拟语气,应用陈述语气.如：
The man insisted that he had never stolen the money.
③ 在would rather后的宾语从句中,也用虚拟语气,其构成为动词用过去式.如：
I would rather they didn't hear of the news.
2．用于主语从句中
It is desired / suggested / proposed / necessary / important / strange / natural/ a pity + that从句,从句中的谓语动词用“should +动词原形”,should可以省略.如：
It is suggested that the meeting should be put off till next week.
It is strange that he should have acted toward his parents like that.
注意：以上句式也可以用于陈述语气.如：
It’s strange that he didn't come yesterday.
It’s a pity that you can't dance.
在suggestion, proposal, order, plan, idea, request, advice等名词后的表语语从句和同位语从句中要用虚拟语气.其构成是“should + 动词原形”.如：
My idea is that we should think it over before accepting it.
We all agreed to his suggestion that we should go to Dalian for sight –seeing.
三、虚拟语气用在as if (as though), even if (even though) 中
如果从句表示的动作指现在状况,则用过去时；
如果表示的动作发生在过去,则用过去完成时；
如果指将来的动作,则用过去将来时.如：
He looks as if he were an artist.
She speak a English so fluently as if she had studied English in America.
Even if he were here, he could not solve the problem.
四、虚拟语气用于定语从句中
It is (high) time (that) … 句型中,定语从句的谓语动词用过去式,或should + 动词原形（其中should不能省略）.此句型意为“（现在）该……”,用来表示提议.
It is (high) time that you went to school.
It is (high ) time that we should start out.
五、用于if only引导的感叹句中
If only I were a flying bird!
= How I wish I were a flying bird!
If only I had seen the film!
= How I wish I had seen the film!
六、在含有If it were not for或If it had not been for条件句的虚拟语气中
If it were not for the rain, the crops would die.
If it had not been for your help, we couldn't have finished the work ahead of time.
= But for your help, …
= Without your help, …
= Had it not been for your help, …
七、口语交际中,虚拟语气的省略情况
若是一般过去时只保留did, could, were等助动词、情态动词或系动词；
若是过去完成时只保留had；
若是过去将来时只保留would / might.如：
一Have you found the answer to the question ?
一I wish I had.
I can't go to Suzhou with you, but I wish I would.