雅思考試要想取得好成績，考生們必須好好複習，為了幫助大家更好的備考，小編下面為大家帶來了雅思口語高分句式之虛擬語氣，希望同學們認真學習下，相信對大家是很有幫助的。
所以我們今天就來看看如何使用虛擬語氣!
虛擬語氣在賓語從句中的用法
1.用在動詞wish之後
在動詞wish後的賓語從句中，從句動詞用過去時表示與現在事實相反的願望;從句動詞用過去完成時表示與過去事實相反的願望;
從句中用 “would/could+動詞原形”則表示將來難以實現的願望。
I wish I knew how to operate the machine.
我要是會操作這臺機器該多好啊。
We wish you had come to our English evening.
I wish I would try again.我真希望能再試一次。
注意：wish與hope的區別
wish後的賓語從句要用虛擬語氣，而hope後的賓語從句要用陳述語氣
I hope you'll be better soon.
我希望你能很快好起來。
2.用在would rather/would sooner後的賓語從句中
would rather和would sooner可以後接一個有自己的主語的賓語從句，從句內容是寧願他人做什麼或寧願某物怎麼樣。
這種賓語從句中用過去時表示現在和將來的虛擬內容，用過去完成時表示過去的虛擬內容。
I wish I had seen you yesterday.
我希望昨天能見到你。
I'd rather you went home now.
我倒寧願你現在回家。
I would rather you came tomorrow.
我倒寧願你明天來。
I would rather you had stayed at home last night.
我倒寧願你昨天晚上呆在家裡。
3.用在表示命令、建議等意義的動詞後的賓語從句中
在表示提議、要求、命令、意願、決定等意義的動詞
(如suggest, decide, require, request, demand, propose, insist, order, prefer等)
後的賓語從句中，常用 "should+動詞原形"，should常被省略。
The experiment has failed.
實驗失敗了。
I suggest you try again.
我建議你再試一次。
Almost all his friends suggested that he visit Mr. Johnson at once.
幾乎他所有的朋友都建議他去拜訪約翰遜先生。
Jane's pale face suggested that she was ill, and her parents suggested that she have a medical examination.
詹臉色蒼白，表明她病了。她父母建議她做一次體格檢查。
I insist that a doctor be sent for immediately.
我堅持立即請醫生。
4.巧記10個虛擬動詞
1、“一、二、三、四”法。
一個堅持，兩個命令，
三個建議，四個要求。
一個“堅持(insist)”;
兩個“命令(order，command)”;
三個“建議(suggest, propose, advise)”;
四個“要求(demand, require, request, ask)”。
2.“Discrop(無收穫)”法。
由這個詞的每一個字母聯想一個詞或兩個詞:demand，insist，suggest，command, request，require，order，propose。
3.用句聯想法。
由句子“I drop cars”的每一個字母聯想一個或兩個動詞:
insist，demand，request，order，propose，command，advise，ask ,require，suggest.
5.虛擬語氣在主語從句中的用法
1、It +be+形容詞+主語從句
“It +is +形容詞+that引導的主語從句”句型，用動詞原形或“should+動詞原形”虛擬語氣。常用於本句型的形容詞有:
necessary, important, impossible等;還有與表示提議、要求、命令等動詞同源的形容詞詞，
如 desirable(←desire), urgent(←urge), advisable(←advise), preferable(←prefer)等。
It is necessary that he listen to the radio frequently.
她很有必要常聽收音機。
It is strange that he (should) have so many friends.
真奇怪，他居然有這麼多的朋友。
2、It+be+過去分詞+主語從句
“It +is +過去分詞+that引導的主語從句”，可用“(should) +動詞原形”。
常用於這一句型的過去分詞有：suggested, required, requested, demanded, urged, ordered, proposed, desired, advised, etc.
It is ordered that we (should) go at once.
命令我們立刻出發。
It has been decided that the meeting (should) be put off.
已決定推遲會議。
6.虛擬語氣在狀語從句中的用法
1、虛擬語氣在as if/as though引導的方式狀語從句中的用法
虛擬語氣用在as if/as though引導的方式狀語從句中，謂語動詞用過去時(be用 were)或"had+ 過去分詞" 形式。
When a pencil is partly in a glass of water, it looks as if it were broken.如果把鉛筆的部分放在盛水玻璃杯中，鉛筆看上去好像斷了。
The two strangers talked as if they had been friends for years.
那兩個陌生人走在一起，好像是多年的朋友。
It seems as if it were spring already.
現在彷彿已是春天了。
He spoke as though he had known it.
他說起話來，好像他知道了似的。
2、虛擬語氣在目的狀語從句中的用法
再for fear that, in order that, so that, lest引導的目的.狀語從句中，謂語動詞一般用should(could, might)+動詞原形表達虛擬語氣，lest引導得從句用should+動詞原形,should 可以省略。
I obeyed her lest she should be angry.
我得順著她，免得她生氣。
Be careful lest you fall from that tree.
要當心, 以免從樹上摔下來。
In order that she could catch the train, she hurried through her work. 為了趕火車，她匆匆做完了她的工作。
I will not make a noise for fear that I might disturb you.
我不會做聲的，以免打擾你。
7.虛擬語氣在表語從句和同位語從句的用法
在proposal, suggestion, order, requirement, desire,
decision, advice, plan, necessity
等表示提議、要求、命令等名詞的後面的表語從句和同位語從句中，可用“動詞原形”或“should +動詞原形”虛擬語氣。
His suggestion is that the meeting be put off.
他的建議是推遲開會。
He made the suggestion that we go by train.
他建議我們坐火車去。
is time that的虛擬形式
在“It is (high) time + that 從句”結構中，用“did 型”虛擬語氣，意為“到了做某事的時間了”。意思是早該幹而已經有些晚了。
在這種情形下常用過去時。
謂 語 動 詞 的 虛 擬 形 式
It is(high/about)time that
動詞過去式(be多用were)
It is high time that you caught the bus.
是你該趕車的時候了。
It is (high) time that you went to school.
到了你上學的時間了。
9.比較if only與only if
only if表示“只有”;“if only”則表示"如果……就好了"。If only也可用於陳述語氣。
I wake up only if the alarm clock rings.
只有鬧鐘響了，我才會醒。
If only the alarm clock had rung.
當時鬧鐘響就好了。
If only he comes early.
但願他早點回來。
If only I had more money!
要是我有更多的錢就好了!
10.英語中有些慣用語包含著虛擬語氣
1、提出請求或邀請
Would you leave a note for her!
你要不要給她留張條子。
I should be grateful, if you would be kind enough to help me.
如果你願幫我，我將不勝感激。
2、提出建議或勸告
You might as well put the meeting off for a couple of days.
你不妨把會議向後推遲兩天。
It would be best if you didn't lend him the money.
你不借給他錢那是最好。
3、表示願望、祝願或詛咒
Long live…! 萬歲……
God bless you! 一路平安。(送別時用語)
Oh，If I knew it is only a trap.
啊，我要知道這是陷阱就好了。
