介词形式，被动意义

介词under短语(Book 2 Unit 4 P64 Ex1)

This new railway is still under construction. 这条新铁路仍在建设中。

本句中的under construction “正在建设中”。介词under构成的短语，如果它的宾语是表示动作的名词，通常含有被动意义，意为“在……过程中”。它可改换为被动语态。但介词结构使句子言简意赅，避免过多地使用被动语态。这种介词短语在句中常作表语，也可作补足语或定语。例如：

Your suggestion is still under discussion. 你的建议正在讨论中。

He is said to be under arrest for stealing.   据说他由于偷窃被捕了。

The house under repair is our classroom building. 正在修建的房屋是我们的教学楼。

常见的这类under短语还有：

under attack在进攻中                under arrest在关押中

under consideration在考虑中         under construction在建设中

under contact在联系中               under discussion在讨论中

under examination在审查中          under investigation在调查中

under repair在修理中                under review在审议中

under treatment在医治中             under trial在受审中

under way 进行中                   under protection 在保护中

under research 研究中               under development在发展中

Bethune left for China in 1939, when the war between China and Japan was under way.

【高考题】1996年高考第80题（单词拼写）

Several new railways are under ________ （建设）in China.

答案：construction。很多考生误填building。也有些考生误填build或built。

练习：

1. The question is under __________（讨论）.

2. The road is under __________ （修理）now.

3. She is under __________ （治疗）in the hospital.

4. The wildlife here is under _________ （保护）.

5. The side effects of the new drug are under ______ （调查）.

6. The request to buy a video for each classroom in under ______（考虑）.

7. How much money we should spend on endangered tigers is under _____(讨论).

8. I’m afraid that the road to Wolong Nature Reserve is under______(修理).

9. The project to make a new home for pandas is under ______(发展).

答案：

1. discussion  2. repair  3. treatment  4. protection  5. research  6. consideration 

7. discussion  8. repair  9. development