21. – I prefer western food. It’s a kind of healthy food.

　 -- ___ But western food is said to be high in sugar and fat.

　 A. Is that right?　　　　　　　　 B. How do you know that?

　 C. Do you really think so?　　　　 D. Who told you that?

13. Michael’s new house is like a huge palace, 　　　　　　with his old one. 。(2009重慶)

。A. comparing　　 B. compares　 C. to compare　 D. compared 。

[解析]考查分詞的用法。表達(dá)“與某物或某人相比”用compared with/to sb/sth. 。

單元測試

12._____ by the advances in technology, many farmers have set up wind farms on their land.

A. Being encouraged　　 B. Encouraging　 C. Encouraged　　　 D. Having encouraged

[解析]考查非謂語動詞過去分詞作原因狀語的用法。分析句子可以看出，這是一個省略的原因狀語從句，前后主語都是many farmers，由by the advances in technology，可知許多農(nóng)民受到鼓舞，選C符合。

11. _________ the right kind of training , these teenage soccer players may one day grew the international stars.　 09江西)

A. Giving　　 B. Having given　　 C. To give　　　 D. Given　

[解析]D 考查非謂語動詞。如果把句子補充完整就不難看出：If they are given the right kind of training , 可知主語they 即these teenager soccer players與give 之間是被動的關(guān)系，所以用過去分詞。根據(jù)主、從句主語一致可省略從句主語的原則，連詞if 也可省，所以得出given the right kind of training , these teenager soccer players……

10. ______ with the size of the whole earth，the biggest ocean doesn’t seem big at all．(2004年湖北)

　A．Compare　 B.When comparing 　C．Comparing　 D．When compared

[解析]本題考查過去分詞作時間狀語，可以將原句子改為：“When the biggest ocean is compared with size of the whole earth, it doesn’t seem big at all.”選擇D選項。

9. When______different cultures，we often pay attention only to the differences without noticing the many similarities．(2005年浙江)

　A．compared　 B．being compared　 C．comparing　 D．having compared

[解析]本題考查現(xiàn)在分詞作時間狀語，可將原句子改為：“When we compare different cultures，we often pay attention only to the differences without noticing the many similarities．”選擇C選項。

8．Generally speaking, ______according to the directions, the drug has no side effect. (2003’上海)

　A. when taking　 B. when taken　 C. when to take　 D. when to be taken

[簡析]完整的說法應(yīng)是when the drug is taken according to the directions,…由于主句的主語和從句的主語相同，因此可以省略從句的主語the drug和謂語的一部分is,答案為B。當(dāng)然也可以省去when。

7．The research is so designed that once ____________ nothing can be done to change it．［NMET2002］　 A．begins　 B．having begun　 C．beginning　 D．begun　

[簡析]答案為D。once begun在句中作條件狀語，它是狀語從句once it is begun的省略形式，句意為：這項調(diào)查研究事先計劃的如此完好，以致于一旦開始，什么也無法改變它。 　　

6．____________ in thought，he almost ran into the car in front of him．［NMET96］　

A．Losing　 B．Having lost　 C．Lost D．To lose　

[簡析]be lost in thought為固定搭配，意為“陷入沉思”，因此答案選C。過去分詞短語 Lost in thought與句子主語he構(gòu)成邏輯上的動賓關(guān)系，且在句中作原因狀語�！�

注意：過去分詞作狀語時，有時可以與一些連詞連用，如：when, while, if, until, once等，這實際上是過去分詞在省略句中的應(yīng)用。 　

5．____________ more attention，the trees could have grown better．［MET90］　

A．Given B．To give　 C．Giving D．Having given　

[簡析]句子主語the trees與give之間是被動關(guān)系，故答案選A，過去分詞短語Given more attention作條件狀語，放于句首。