答案：1)C　2)D

　　3)When do you think they

　　4)If I were you/Were I you

　　2．Indeed，his sunburnt face and arms and his slim，strong body are just like those of millions of Chinese farmers，for whom he has struggled for the past five decades.

　　的确，他被太阳晒得黝黑的脸庞和手臂，以及他那瘦削而又结实的身躯，就跟其他千百万中国农民一样，过去50年来，他一直在努力帮助他们。

　　剖析：1)本句中含有一个定语从句for whom he has struggled for the past five decades，修饰先行词Chinese farmers。该定语从句的引导词是"介词＋whom"的形式。如：

　　I won't forget the old worker with whom I worked for three years.

　　我不会忘记那位老工人，我和他在一起工作了三年。

　　2)those代替前面的名词his sunburnt face and arms and his slim，strong body。

　　考点 struggle vi.& n．斗争；拼搏；努力

　　He has struggled against illness for many years.

　　他与疾病斗争很多年了。

　　The young man is struggling for his future.

　　这个年轻人在为自己的将来拼搏。

　　A bird was caught in the net and was struggling to get free.

　　一只鸟被网罩住了，挣扎着想要逃脱。

　　It was a hard struggle to get my work done in time.

　　为使工作按时完成，我作了一番艰苦的努力。

　　归纳：struggle against的含义是"同......作斗争"。

　　struggle for的含义是"为......奋斗"。

　　struggle to do sth的含义是"挣扎着做某事"。

　　struggle作名词时是可数名词。

　　单项填空

　　1) In our class there are 46 students，______ half wear glasses.

　　A．in whom　　　　 　 B．in them

　　C．of whom D．of them

　　2) Adolescence is a difficult period of life，often characterized by a ______ individual independence.

　　A．struggle with B．struggle to

C．struggle for D．struggle against