内容正文:
Part Ⅱ Grammar—Relative Clauses(3)
感知以下句子,完成方框下的小题
1.A scientist who was on the Nobel Prize Committee called Hans Forssberg explained that…
2.In 1969, Tu Youyou was chosen to establish a team whose goal was to find a cure for malaria…
3.The reason why this was difficult was that the team had limited resources.
4.Later, she studied Chinese medicine for two and a half years with experts in the field from whom she gained a deep knowledge about traditional practices.
5.They did not have enough staff, and the laboratory in which they worked had poor air quality.
定语从句的关系词有关系代词,如句1和2;关系副词,如句3;关系代词前面可以加上介词,如句4和5。
“介词+关系代词”引导的定语从句
1.基本构成及用法
(1)关系代词在定语从句中作介词的宾语时,从句常由“介词+which/whom”引导。
(2)若介词放在关系代词前,关系代词指物时只能用which;关系代词指人时只能用whom;如果关系代词作定语时也可用whose。
►The ladder on which I was standing began to slip.我站在上面的梯子开始滑动。
►We'll go to see the famous singer about whom we have talked.
我们将去见我们谈到的那位著名歌手。
►This is the boy with whose pen I wrote a letter just now.这就是那个孩子,刚才我用他的钢笔写了一封信。
2.“介词+which/whom”中介词的确定
(1)根据先行词与介词的搭配习惯来确定。
►I still remember the day on which I joined the army.我仍然记得我参军的那一天。(表示具体的“在哪一天”,用介词on)
(2)根据定语从句中的谓语动词或形容词确定介词。该动词或形容词常与某些介词构成固定搭配。
►He is the man for whom I'm waiting for a long time.他是我等了很久的那个人。(wait for等待,为固定搭配)
►He is a famous singer of whom we are proud.他是一位我们引以为豪的著名歌唱家。(be proud of以……而自豪,为固定搭配)
(3)根据句子的意思确定介词。有些句子中,定语从句中谓语动词也不是固定的动词短语。这时,需要根据句子所要表达的意思选用不同的介词。
►This is the book without which I can't pass the exam.这是一本没有它我就不能通过考试的书。(根据句意判定)
3.“介词+关系代词”的特殊用法
有时“介词+关系代词”前会出现不定代词(all, both, none, neither, many, few, the rest等)、数词(分数、百分数等)及“the+最高级/比较级”等,用来表示部分、数目等意义。
►Last week, only two people came to look at the house, neither of whom wanted to buy it.上周只有两个人来看了房子,但是没有一个想要买的。
►The football team has 15 members, the oldest of whom is 25 years old.
这支足球队有15名队员,其中最大的25岁。
4.“介词+关系代词”引导定语从句的注意事项
(1)在定语从句中,有一些含介词的动词短语不可拆开使用,如look after, look for等不能把介词移至which或whom之前。
►The babies whom the nurses are looking after are very healthy.(正)
►The babies after whom the nurses are