第一、定語從句
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這應(yīng)該算是寫作中最常用的一種句型之一。適當(dāng)?shù)剡\(yùn)用定語從句可以給你的文章增色不少。例如，下面的這兩個(gè)句子用上定語從句馬上就變成了一個(gè)漂亮的復(fù)雜句。
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Bad books contain evil thoughts. In them, there might be much description about violence, superstition, and sex.
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→ Bad books, in which there might be much description about violence, superstition, and sex, contain evil thoughts.

第二、狀語從句
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在寫作當(dāng)中運(yùn)用的最多的是以下五種狀語從句，即原因狀語從句，讓步狀語從句，條件狀語從句，時(shí)間狀語從句和目的狀語從句。
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1. 原因狀語從句：常由because, as, since和for引導(dǎo)
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Eg: Nonetheless, I am still in favor of space travel, for its merits far outweigh demerits.
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盡管如此，我還是贊成太空探險(xiǎn)，因?yàn)樗暮锰庍h(yuǎn)遠(yuǎn)大于壞處
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2. 讓步狀語從句：常由although, though, even though/ if, as long 和as not with standing引導(dǎo)
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Eg: Although this view is wildly held, this is little evidence that education can be obtained at any age and at any place.
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盡管這一觀點(diǎn)被廣泛接受，很少有證據(jù)表明教育能夠在任何地點(diǎn)、任何年齡進(jìn)行。
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3. 條件狀語從句：常由if, on the condition that和providing that引導(dǎo)
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Eg: If you want to achieve something or intend to fulfill one of your ambitions, you must work hard, make efforts and get prepared.
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假如你要取得成就或要實(shí)現(xiàn)你的雄心壯志，你必須努力工作、艱苦奮斗、準(zhǔn)備好條件。
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4. 時(shí)間狀語從句：常由when和while引導(dǎo)
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Eg: When it comes to education, the majority of people believe that education is a lifetime study. 說到教育，大部分人認(rèn)為其是一個(gè)終生的學(xué)習(xí)。
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5. 目的狀語從句： 常由so that和in order that引導(dǎo)
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Eg: Millions of people have to spend more time and energy on studying new skills and technology so that they can keep a favorable position in job market.
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成千上萬的人們不得不花費(fèi)更多的精力和時(shí)間學(xué)習(xí)新的技術(shù)和知識，使得他們在就業(yè)市場能保持優(yōu)勢。

第三、賓語從句
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Eg: Some people claim that government should be mainly responsible for the environmental pollution.
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一些人認(rèn)為政府應(yīng)對環(huán)境污染負(fù)主要責(zé)任。
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Eg: Many experts point out that, along with the development of modern society, it is an inevitable result and there is? no way to avoid it. 許多專家指出這是現(xiàn)代社會發(fā)展必然的結(jié)果，無法避免。