Question

三道英语题

1.Raymond entered college at the age of eighteen,___four years later at the head of his class.
A.graduating B.graduated C.to graduate D.having graduated
2.I was busy the other day,otherwise I ___to help you.
A.would have come B.would come C.had come D.came
3.we put our books in the bookcase to keep them ___from dust.
A.empty B.free C.loose D.short
以上三题答案分别是A,A,B 请给出详解 谢谢了！~

Answer 1

1.主语是raymond ，后面句子没有主语，所以和主句同一主语，raymond 和graduate 构成主动，用现在分词作结果状语
2.句子的意思是“那天我很忙，不然我肯定去帮你了”，过去本可以做的却没做，情态动词加have done
3.keep sb. free from sth.使某人免于某事，这句话就是“使书本免落上灰尘”

Answer 2

graduate是毕业的意思，是动词，这里处于第二动词是主动，所以选A。
第二题用排除法，the other day是几天前，是确切的时间，所以用一般过去式，以下符合要求的事AD,come不能延续，所以选A。
有一个固定搭配是 be free from，意思是远离...根据句义就知道他们是想把书放在书架上来远离灰尘，故选B

Answer 3

1.Raymond entered college at the age of eighteen,_a__four years later at the head of his class.因为两句中间是一逗号，没有连词，不能用谓语形式。只能用现在分词这种非谓语，
A.graduating B.graduated C.to graduate D.having graduated
2.I was busy the other day,otherwise I _ A.__to help you.
A.would have come B.would come C.had come D.came
表示过去的虚拟，从前一句上看出时间是过去。所以后一句是说过去就可以做。。但没做。相当于 if i had not been busy the other day, i would have come to help you.
3.we put our books in the bookcase to keep them _ B__from dust.
A.empty B.free C.loose D.short
keep ...free from 是固定搭配。

Answer 4

第一题肯定是A，后3项不对。