雅思长难句句式分析之虚拟语气

时间:2019-12-12 14:31:36 雅思语法 我要留学

以下就是96留学为大家整理的雅思长难句句式分析之虚拟语气。希望对各位考生的备考有所帮助:

成都留学艺术_雅思长难句句式分析之虚拟语气

虚拟语气是一种表示假设状态的句型,由if引导的状语从句和主干构成成都留学艺术,依据时态的不同可以分为下列4种基本句型。

纯条件的虚拟语气

与现在事实相反的虚拟语气

与过去事实相反的虚拟语气

与将来状况相反的虚拟语气

1 纯条件的虚拟语气

使用纯条件的虚拟语气时,if从句的动词用现在时,而主句则往往是现在时的情态动词加动词原形。句型如下:

If + 主语 + 一般现在时动词,主语 + will/may/can/shall/must/ought to/should +动词原形

Ifhe is here, I will beat him.

Ifanyone makes such a mistake, he must be punished.

课堂练习1

The probability that actual remains of softtissue will be preserved is improved if the organism dies in an environment ofrapid deposition and oxygen deprivation.

课堂练习2

In the mythology of giftedness, it ispopularly believed that if people are talented in one area, they must bedefective in another, that intellectuals are impractical, that prodigies burn toobrightly too soon and burn out, that gifted people are eccentric, that they arephysical weaklings, that there's a thin line between genius and madness, thatgenius runs in families, that the gifted are so clever they don't need specialhelp, that giftedness is the same as having a high IQ, that some races are moreintelligent or musical or mathematical than others, that genius goesunrecognised and unrewarded, that adversity makes men wise or that people withgifts have a responsibility to use them.接下来为大家介绍"成都留学艺术简述雅思长难句句式分析之虚拟语气"
雅思长难句句式分析之虚拟语气

Should表示“应当”的意思时,等于ought to,故不受限制。

IfI have time, I should/ought to do it.

在纯条件的虚拟语气的if从句中,时态为一般现在时,表示若if的条件存在,就会有预期的结果。If I have time, I should/ought to do it.表示如果我有时间,我就会做。至于我是否有时间,不一定,但是只要有时间,就会有“我会做”这个预期的结果。 纯条件结构的副词连接词还有once(一旦), when(当),before(在…之前), as soon as(一旦),unless(除非)等。

OnceI have money, I will buy stocks.

Whenhe finishes it, he will come.

Assoon as I arrive, I will tell you the details.

Iwill not do anything before I arrive.

Iwill not do it unless you tell me the truth.

2 与现在事实相反的虚拟语气

使用该虚拟语气时,if从句的动词用过去时,而主句则往往是过去时的情态动词加动词原形。句型如下:

If + 主语 + 一般过去时动词,主语 + would/could/might/should/ought to + 动词原形

IfI were rich, I would buy a car.

IfI lived in Shanghai, I might be happy.

此虚拟语气旨在表示与现在的事实相反,这一点与纯虚拟语气不同,注意区分。

If I were rich, I would buy a car.(如果我有钱,我就会买车) =

As I am not rich, I can not buy a car.(因为我没有钱成都留学艺术,所以我不能买车)。

不论主语为第几人称,if从句中的be动词,均使用were。

If I were you, I would not do it.

If he were you, he would not tell thetruth.

课堂练习1

The Fore also displayed familiar facialexpressions when asked how they would respond if they were the characters instories that called for basic emotional responses.

课堂练习2

In the green-to-yellow lighting conditionsof the lowest levels of the forest, yellow and green would be the brightestcolors, but when an animal is signaling, these colors would not be very visibleif the animal was sitting in an area with a yellowish or greenish background.

主句的助动词一定为过去时的情态动词。因此must只能用来表示现在或将来的状况,故只能用于纯条件的虚拟语气中,而不能用在与现在事实或过去事实相反的虚拟语气中。

Ifyou had money, you must help the poor. (错)

If you have money, you must help the poor. (对)

3与过去事实相反的虚拟语气

使用该虚拟语气时,if从句的动词用过去完成时成都留学艺术,而主句则往往是过去时的情态动词 + have +过去分词,句型如下:

If + 主语 + had + 过去分词,主语 + would/could/might/should/ought to + have + 过去分词。

IfI had arrived earlier, I could have met him.(要是我当时早点到,我就可以看到他了 = 当时我没有到成都留学艺术,所以没有看到他。)

Ifhe had taken your advice, he might have not made such a mistake.

注意:if从句中had与had had的区别:

1)在“if + 主语 + had + 名词”的结构中,had为一般过去时动词,译成“有”,此为表示与现在事实相反的虚拟语气。主句中放置一般过去时的情态动词即可。

Ifhe had money, he would buy that car.

如果他现在有钱,他就买那个车了。

2)在“if + 主语 + had + 过去分词”的结构中,had为过去完成时的助动词,译成“曾经或当时”,此为表示与过去事实相反的虚拟语气。主句中放置一般过去时的情态动词即可。

If he had had money, he would have boughtthat car.

如果他当时有钱的话,他当时就买那个车了。

4与将来状况相反的虚拟语气

使用该虚拟语气时,if从句一定要加主动should成都留学艺术,“if…should”译成“万一”。若果假设的可能性很低,则主句要置情态动词的过去式(与现在事实相反的虚拟语气相同),如果假设的可能性很高,则主句要用情态动词的原形(与纯条件虚拟语气相同)。句型如下:

a. 低可能性

If + 主语 + should + 原形动词,主语 + would/could/might/should/ought to +原形动词。

If you should fall ill, the meeting wouldbe put off.

万一你生病成都留学艺术,会议讲延期。 = 你不太可能生病,会议也不太可能延期。

b. 高可能性

If + 主语 + should + 原形动词,主语 + will/can/may/should/ought to +原形动词。

If you should fall ill, the meeting will beput off.

万一你生病,会议讲延期。 = 你可能会生病,会议也可能会延期。

注意:表示与将来状况相反的虚拟语气,也可与祈使句形成的主句连用。

IfI should be late, be sure to wait for me.

万一我迟到,务必要等我。 = 我可能会迟到,你务必要等我。

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