知识框架
一、三大板块
1. 含有条件状语从句的复合句
2.名词性丛句
a.宾语从句
wish（would rather）+宾语从句
suggest（…）+宾语从句
b.主 语从句 It is + adj./p.p/n.+ that+ S+ (should) +do
c.表 语 从句S+is that +s + (should) +do
d.同位语从句 S+that +s +(should) +do
3. 定语从句 It is (high) time that + S + did
二、两种形式
1. 时态后退型
a.用过去式表现在情况
b.用过去完成式表过去
c.两种形式用过去将来表将来
2. should+动词原形型
内容详述
I. 含有条件状语从句的复合句(以do为例;S=主语)
与过去事实相反的假设
If +S+had done…（过去完成时）
S+would/should/could/might+have done…
If I had been free yesterday, I would have gone
shopping with you.
|
与将来事实相反的假设 |
did… If+S should do were to do |
S+would/should/could/might+do… If I were to be free tomorrow, I might go shopping with you. |
注意事项：
1．倒装句。如果条件句中含有功能词had，should，were时，可以省去If，把功能词提前，构成倒装句。
2．错综条件句。若条件句和主句动作不存在同一个时间，则谓语形式应根据具体情况而定。
e.g.: If I hadn't stood under the ladder to catch you when you fell, you wouldn't be smiling now.又如：
(1)If I were you, I would have gone to the film last night.
(2)If we hadn't got everything ready by now, we should be having a terrible time tomorrow.
(3)If the weather had been more favorable, the crops would be growing still better.
3．If there weren't/had not been +…=without…
e.g.: If there hadn’t been your advice, I would have failed. = Without your advice I would have failed.
4．If it were not for…/ If it hadn't been for…= but for…
5．otherwise+虚拟语气的句子
6．虚拟语气的句子，but+ 陈述事实的句子
II. 虚拟语气用在宾语从句中
1. wish+that+sb. had done…（希望过去用过去完成式）
wish+that+sb. did …(希望现在用过去式)
wish+that+sb. would/should do（希望将来用过去将来）
2. would rather后的从句要用虚拟语气。
|
时间 |
从 句 |
|
虚拟现在 |
were, did (动词一般过去式)> |
|
虚拟过去 |
had done |
|
虚拟将来 |
did (动词一般过去式) |
例：I would rather I hadn’t said such unkind things to you. （虚拟过去）
I'd rather you came here for the answer tomorrow morning. （虚拟将来）
I’d rather you posted the letter right away.(虚拟现在)
3. suggest+（that）S+should+do…
表示愿望、建议、请求等主观意向的动词之后的宾语从句，谓语用should ＋动词原形，should常常省略。
这类词有：decide，demand，desire，insist，order，propose，suggest，recommend，request， require等。
注意：
1. suggest 当“建议”讲时，其宾语从句用虚拟语气；当“暗示、表明”时，用陈述语气
2. insist 当坚持“要求”时，宾语从句用虚拟语气；当坚持“某个事实”时，用陈述语气。
判断改错：（错） Your pale face suggests that you（should）be ill.
（对） Your pale face suggests that you are ill.
（错） I insisted that you（should）be wrong.
（对） I insisted that you were wrong.
III. 虚拟语气用在主语从句中
It is demanded / necessary / a pity + that…等结构的主语从句，谓语动词用should 加动词原形，should 可省略。
|
It is |
可用的词有三类 |
that |
（should）do |
|
suggested, ordered, required, proposed, demanded, requested, insisted等 |
|||
|
important, necessary, natural, imperative, strange等 |
|||
|
a pity, a shame, no wonder等 |
- 虚拟语气语法知识总结
- › 新概念英语第三册语法总结：虚拟语气
- › 虚拟语气语法知识总结
- › 条件句中的虚拟语气
- › 方式状语从句中的虚拟语气
- › 主语从句中的虚拟语气
- › insist后宾语从句何时用虚拟语气
- 在百度中搜索相关文章：虚拟语气语法知识总结
- 在谷歌中搜索相关文章：虚拟语气语法知识总结
- 在soso中搜索相关文章：虚拟语气语法知识总结
- 在搜狗中搜索相关文章：虚拟语气语法知识总结