雅思寫作如何使用狀語從句
在雅思寫作考試中，狀語從句的使用能起到非常明顯的強調突出作用，如何利用狀語從句拿高分呢?
雅思寫作備考句型：狀語從句的使用
狀語的定義非常複雜，也不是很好理解，現在給大家介紹一個較爲簡單的概念。狀語：即由介詞引導出來的短語結構。
簡單的介詞有：in, on, with, by, for, at, about, into, within, throughout, inside, outside等，難一點的介詞短語包括：according to, because of, by means of, in addition to, in front of,in spite of, into, considering, regarding, respecting, including等。
今天我們來講一下雅思考試常見五大句型一：主謂結構，如何藉助狀語變得高大上起來的。
Accordingto the chart, during the period from 1990 to 1995 the averageprices of houses in three citiesdecreasedsignificantly by five percentin NewYork (USA) and(省略by) about 7.5 percent inboth Tokyo (Japan) and London (UK).
這句話的C7T3七分小作文中的句子，將句子中介詞引導的狀語全部刪去後，句子剩下的部分爲the average pricesof houses decreased significantly.。這是一個大多數同學都能順暢寫出的主謂結構的句子。
同樣，考官考題中的主謂結構也不算少數：Nowadayssome individuals behave in an anti-society way, such ascommitting a crime.這句話只翻譯黑色部分，也就是去掉狀語後的部分時，幾乎沒人不會翻譯：現如今很多人都這樣做。單獨翻譯狀語部分也不是很難：in an anti-societyway,用一種反社會的方式such as committing a crime比如犯罪。那麼連接在一起，這句話的意思是：現如今很多人會做一些反社會的事兒，比如犯罪。
雅思寫作中如何利用狀語從句拿分
一、原因狀語從句
能引導原因狀語從句的詞彙有：because，as，since，inthat
例如：
World food outputper head has risen by 4 per cent between the 1970s and 1980smainly as a
result of increases in yields from land already in cultivationbut also
becausemore land has been brought under plough.
在20世紀70以及80年代，平均每人的食物產量增加了4%，主要是因爲現有的耕地食物產量增加，還有一個原因是越來越多的土地被用來耕地。
The removal ofsubsidies stopped land-clearing and over-stocking,because they in thepast had been the principal causes of soil erosion.
因爲津貼的廢除，導致開荒毀林以及過度放牧的停止，曾經這是水土流失的主要原因。
Such fuel crops areless likely to contribute to the greenhouse effectasthey produce farless carbon dioxide, and absorb carbon dioxide as they grow.
這樣的燃料作物相比之下更不太可能導致溫室效應，因爲燃燒他們產生的二氧化碳更少並且在這些作物的成長過程中會吸收二氧化碳。
從以上句子中可以看出，原因狀語從句的引導詞後面接的是一個完整的句子，不能缺少任何的主謂賓成分，並且因爲、所以不能同時出現在一個句子裏面，有了because就不可以再出現so了，反之亦然。
注：如果能用because of就不要用because。介詞詞組相比與連詞的優勢在於because of後面接詞組，這就要求考生能將自己的句子進行凝縮。
介詞詞組有：because of, dueto, as a result of, thanks to, owing to
二、結果狀語從句
能引導結果狀語從句的詞彙有：...
These remarkablebeetles have evolved and adapted so successfullyto the localenvironmentthat they have reached their natural boundaries.
這些甲殼蟲進化以及適應當地的環境如此之快以至於他們的數量已經到達了自然界能到達的最大值。
The tuition feeincreasesso rapidly thatmany students take part-time jobs to lightenthe financial burden of their parents.
教育費用增加如此之快以至於很多的學生參加兼職去減少父母的經濟負擔。
以上兩個句子是最基本的句型，寫作中可以採用這個基本句型的升級版，將之改爲倒裝句：
So
successfullyhave these remarkablebeetles evolved and adapted to the local environmentthat they havereached their natural boundaries.
So
rapidly does the tuition fee increase that manystudents take part-time jobs to lighten the financial burden of their families.
將so提前，that後面的句子不發生任何其他的變化。倒裝句共四種形式：
[if !supportLists]1. [endif]Heis so tall that he cannot sit in the first row.
改成So tall is he thathe cannotsit in the first row.
[if !supportLists]2. [endif]Hecan do it so quickly that he earns most.
改成So quickly can he do it thatheearns most.
[if !supportLists]3. [endif]Hehas done it so quickly that he gets the prize from the manager.
改成So
quickly has he done it thathe gets the prizefrom the manager.
[if !supportLists]4. [endif]Hegets the highest mark so easily that he often looks down upon those industriousstudents.
改成So
easily does he get the highest mark thathe often looks down upon those industrious students.
把動詞分成四種，前三種(系動詞、情態動詞以及完成時態)將系動詞、情態動詞以及構成完成時態的助動詞(have，has，had)倒裝;第四種實義動詞，用助動詞do以及其變體進行倒裝。
三、時間狀語從句
常用的時間狀語從句：l，since，as
soon as，，...
這裏重點講解...，以及...
Ihad hardly gotback to the kitchen when the telephone rang.(過去完成時，過去時)
我剛離開廚房，電話就響了。
改成倒裝句：
Hardly had I gotback to the kitchen when the telephone rang.
Hardly had the newsspread around the country when the president came up with another idea to get ahigher efficiency.
四、條件狀語從句
引導條件狀語從句的詞：if，provided
that，providingthat
If the governmenttakes immediate steps to curb this situation, the general public will trust thegovernment again.
可以將if改成provided
that，也可以改成providing
that。
注：if除了可以表示條件之外，還可以表示虛擬。條件是可以實現而虛擬表示與事實相反，不可能實現。
[if !supportLists]1) [endif]與現在相反
If he did it, he
would become successfully. 從句用過去式，主句用情態動詞的過去時。
If I were you, I
would do it. Be動詞的虛擬形態只能用were，不管主語是單數或複數。
If it were not forthe beetles, chemical fertilizer would be washed by rain into streams andrivers before it could be absorbed into the hard earth, polluting water coursesand causing blooms of blue-algae.
[if !supportLists]2) [endif]與過去相反
If he had done the
task, he would have got the award. 從句用過去完成時，主句用情態動詞的過去時+完成時。
[if !supportLists]3) [endif]與將來相反
If someone shouldcall me, leave me a message.
If he came here, hewould take some gifts to me.
在寫作中，比較實用的是表示現在相反以及過去事實相反。並且在表示虛擬的句型中，有三個句型可以進行倒裝。
If I were you, Iwould do it.
改成Were I you, Iwould do it.
If he had done thetask, he would have got the award.
改成Had hedone the task, he would have got the award.
If someone shouldcall me, leave me a message.
改成Should someonecall me, leave me a message.
如何在英語寫作中運用狀語從句的省略?
一、 狀語從句的省略形式必須符合以下兩個條件：
1. 從句的主語和主句的主語一致(或者從句主語是it)
2. 從句的謂語部分有系動詞be
如果滿足以上兩個條件，就可以省略從句的主語+be，只保留其他成分，這樣可以使句子更加簡潔明瞭。
二、 狀語從句常見的省略現象
1. 時間狀語從句的省略
由when，while，until，after，before， since等引導，如：
Fear is something innate that we actually rely on to keep us safe when (we are) faced with danger. (Skillful reading & writing level3, P13)
解析：這裏when引導的時間狀語從句的主語和主句rely on的邏輯主語一致，且從句有系動詞are，此時可以把從句主語we和系動詞are一起省略。
When (the brain is) multitasking, the brain is concentrating on one task and then switching to the other, in sequence. (Skillful reading & writing level4, P31)
解析：when引導的時間狀語從句的主語和主句is concentrating on的邏輯主語一致，且從句有系動詞is，此時可以把從句主語the brain和系動詞is一起省略。
2. 條件狀語從句的省略
由if，unless，once引導，如：
If (these projects are) successful, these projects have amazingly positive potential. (Skillful reading & writing level4, P21)
解析：if引導的條件狀語從句中省略了these projects are。
Once opened, the museum will be very popular with the citizens.
解析：在once引導的條件狀語從句中省略了the museum is。
3. 讓步狀語從句的省略
由although，though，even if，even though，wherever，whenever，however等引導，如：
Although (he was) the youngest in the group, Tom won all the prize.
解析：although引導的讓步狀語從句省略了he was。
This viewpoint, however understandable (it is), is not practical.
解析：however引導的讓步狀語從句省略了it is。
4. 方式狀語從句
由as，as if，as though 引導，如：
He did it as required.
解析：由as引導的方式狀語從句中省略了 he was。
The girl looked as if afraid of nothing.
解析：由as if引導的方式狀語從句省略了she was。
5. 比較狀語從句
在比較狀語從句中，常在as和than引導的分句中省略某些與主句相同的成分，有時甚至省略整個as和than引導的從句，如：
He can play basketball as well as I.
解析：由as引導的比較狀語從句省略了do。
You finished the work three weeks earlier than (you were) expected.
解析：由than引導的比較狀語從句省略了you were。
6. 其他形式
(1) 在狀語從句中，從句主語和主句主語一致，有時候從句謂語沒有系動詞，也可以省略，如：
When comparing different cultures, we often pay attention only to the difference without noticing many similarities.
解析：這裏when comparing different cultures就是when we compare different cultures。
(2) 由if引導的習慣用法，常有：if not，if possible，if necessary 等，如：
Correct the mistake in your composition if any.
解析：這裏的if any 相當於 if there is any。
就像一幅畫作中不應該由多餘的線條，一臺機器不應該有多餘的零件，一句話中也不應該有贅詞。所以能夠用簡潔有力的方式表達的意思可能更好一些。從上面的狀語從句的省略現象可以看出語言表達的多樣性，靈活性和可變性。如果我們能夠靈活的掌握這種省略的形式，可以有效提高我們句子表達的技巧。雖然狀語從句的省略形式可以提高我們句子表達的多樣性，但是這種省略形式必須以保持句子原有意思不變，不產生歧義和準確性的基礎上輸出。
狀語從句如何增加雅思寫作的難度
雅思句子的宗旨，萬變不離其宗，只有五大基本句型，除此以外，都是在五大基本句型上添加了部分修飾，使得句子看起來比較高大上。而在這些添加的部分當中，最重要的一項當屬狀語了。
狀語的定義非常複雜，也不是很好理解，現在給大家介紹一個較爲簡單的概念。狀語：即由介詞引導出來的短語結構。
簡單的介詞有：in, on, with, by, for, at, about, into, within, throughout, inside,
outside等，難一點的介詞短語包括：according to, because of, by means of, in addition to, in
front of,in spite of, into, considering, regarding, respecting, including等。
今天我們來講一下雅思考試常見五大句型一：主謂結構，如何藉助狀語變得高大上起來的。
Accordingto the chart, during the period from 1990 to 1995 the
averageprices of houses in three citiesdecreasedsignificantly by five percentin
NewYork (USA) and(省略by) about 7.5 percent inboth Tokyo (Japan) and London
(UK).
這句話的C7T3七分小作文中的句子，將句子中介詞引導的狀語全部刪去後，句子剩下的部分爲the average pricesof houses
decreased significantly.。這是一個大多數同學都能順暢寫出的主謂結構的句子。
同樣，考官考題中的主謂結構也不算少數：Nowadayssome individuals behave in an anti-society way,
such ascommitting a
crime.這句話只翻譯黑色部分，也就是去掉狀語後的部分時，幾乎沒人不會翻譯：現如今很多人都這樣做。單獨翻譯狀語部分也不是很難：in an
anti-societyway,用一種反社會的方式such as committing a
crime比如犯罪。那麼連接在一起，這句話的意思是：現如今很多人會做一些反社會的事兒，比如犯罪。
加油添加狀語，讓自己的雅思寫作句子變得豐富起來吧。
