第四、同位語從句
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Eg: It is an undeniable fact that environmental pollution becomes increasingly serious.
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環(huán)境污染變得越來越嚴(yán)重是不可否認(rèn)的事實。
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Eg: No one can deny the basic fact that it is impossible for average workers to master those high-technology skills easily.
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沒有人能否認(rèn)這一基本事實：對于一般工人來講，輕松掌握這些技術(shù)是不可能的。

第五、主語從句
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Eg: What has caught our attention is /It is noticeable that the environment in both the rural and urban areas is deteriorating.
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值得注意的是農(nóng)村和城市的生態(tài)環(huán)境都在不斷惡化。
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Eg: It is universally acknowledged that environmental pollution becomes one of the most serious problems in China or even the world as a whole. 眾所周知，環(huán)境污染問題是中國乃至
世界面臨的最為嚴(yán)重的問題之一。

第六、強調(diào)句。It is + 被強調(diào)的內(nèi)容 + that
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Eg: It is cars and factories that release a great deal of gases, polluting the environment.
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汽車和工廠排放大量的廢氣，使得環(huán)境被污染。

第七、倒裝句
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Eg: Only if the government will take some appropriate measures, will this intractable problem be tackled.
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只有政府采取適當(dāng)?shù)拇胧@個棘手的問題才能被解決。

第八、被動語態(tài)
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Eg: Every means should be tried to protect the environment on which people live.
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人們應(yīng)竭盡全力來保護我們賴以生存的環(huán)境。

第九、分詞結(jié)構(gòu)。包括現(xiàn)在分詞和過去分詞。
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Eg: Tourism, which is a rising industry, has become the major source of economy, playing crucial role in many Asian countries.
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旅游業(yè)是一個新興的行業(yè)，它成為經(jīng)濟的主要來源， 在很多東南亞國家起著尤為重要的作用。
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Eg: To be more specific, government should stage some relevant laws or regulations to severely punish the factory producing a great number of pollutants and the people littering or spitting deliberately.
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具體來說，政府應(yīng)該出臺相關(guān)法律法規(guī)對制造大量污染物的工廠及故意亂扔垃圾隨地吐痰的人進行嚴(yán)懲。

第十、插入語
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一種獨立成分，與句子的其它成分一般沒有語法上的關(guān)系，大都是對一句話作一些附加說明或解釋。它通常由一個詞、一個短語或一個句子構(gòu)成，位置較為靈活，可置于句首、句中或句末，一般用逗號或破折號與句子隔開。
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Eg: Computer, an indispensable part in our life, has brought us great conveniences.
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電腦，我們生活中必不可少的一部分，給我們帶來了極大的方便。
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Eg: College students, lacking social experience, are easily cheated.
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大學(xué)生，沒有社會經(jīng)驗，容易上當(dāng)受騙。