高中英语,求详细解题步骤谢谢!6) Corn originated in the New World and thus

高中英语,求详细解题步骤谢谢!

6) Corn originated in the New World and thus was not known in Europe until Columbus found it ____ in Cuba. A) being cultivated B) been cultivated C)having cultivated D) cultivating

7) ____in this way, the situation doesn't seem so disappointing. (CET-4 2000,1)

A) To look B) Looking at C) Looked at D) To be looked at

8) You will see this product ____ wherever you go. (CET-4 2000,6)

A) to be advertised B) advertised C) advertise D) advertising

9) ____in a recent science competition, the three students were awarded scholarship totaling 21,000 dollars. (CET-4 2000,12)

A) To be judged the best B)shavingsjudged the best C) Judged the best D) Judging the best

10) From the dates ____ on the plates, we decided that they were made in Song Dynasty.

A) marking B)having been marked C) marked D) to be marked

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做非谓语动词题目的经典思维方式：一、确定空格处是谓语动词还是非谓语动词；二、如果是非谓语动词,要看它与逻辑主语是主动关系还是被动关系；三、看时间：过去的用过去式,现在的用进行式,将来的用不定式.

另外,非谓语动词如果作状语,它的逻辑主语就是句子的主语；如果作定语,它的逻辑主语就是它所修饰的名词；如果作宾语补足语,它的逻辑主语就是宾语.

6.A cultivate在句子中作宾语补足语,故其逻辑主语是it,即corn.corn和cultivate是被动关系,排除C、D；B项不全,应当是having been cultivated.

7.C look at在句子中作方式状语,故其逻辑主语是the situation,两者是被动关系,排除A、B；look at不是将来的时间,排除D.

8.B advertise在句子中作宾语补足语,与它的逻辑主语product是被动关系,排除C、D；advertise不是将来的动作,排除A.

9.C judge在句中作状语,与逻辑主语the three students是被动关系,排除B、D；动作不是将来发生的,排除A.

10.C mark在句中作定语,修饰dates,它与dates是被动关系,排除A；mark是过去发生的动作,排除D；having been done有时与done可以互换,但前者更强调动作是在过去发生的,且发生过多次,根据这一分析,排除B.

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