【句子】
The science of horticulture, in which the primary concerns are maximum yield and superior quality, utilizes information derived from other sciences.
主要目的在于豐富和優(yōu)質(zhì)的農(nóng)藝學(xué)利用了其他科學(xué)的知識。
【解析】
1.horticulture n.園藝學(xué)
Horticulture is the industry and science of plant cultivation.
園藝是一種產(chǎn)業(yè)和科學(xué)的栽培植物。
2.in which, for which, on which, at which的不同用法
1)這些都是定語從句里面，由which引導(dǎo)的定語從句，介詞提前。下面這些介詞的使用除了意思上的區(qū)別，具體是要以which引導(dǎo)的從句而定的。
①in which可以翻譯成在……里面
The school (that/which) he once studied in is very famous.
= The school in which he once studied is very famous.
②for which可以翻譯成為了……目的
Tomorrow I will bring here a magazine (that/which) you asked for.
= Tomorrow I will bring here a magazine for which you asked.
③on which可以翻譯成在……的上面，或具體時間的某一天
I have a dresser in my bedroom, which there are many cosmetics on.
= I have a dresser in my bedroom on which there are many cosmetics.
④at which可以翻譯成在……里面或在……
The dumpling House which he often has dumplings at is very popular.
= The dumpling House is very popular, at which he often has dumplings.
2)當(dāng)然第一點只是介詞作為基本意思的用法，還有一些固定搭配，得具體情況具體分析。
①The plane may be several hours late, in which case there’s no point in our waiting.
(固定搭配：in the case)
②The speaker paused to examine his notes, at which point a loud crash was heard.
(固定搭配：at the point)
③Ten years of hard work changed her greatly, for which reason he could hardly recognize her at first sight.
(固定搭配：for the reason)
④The film at which I fell asleep was very boring.
(Here "at which" is based on "fell asleep at the film"因為電影無聊而睡覺。)
⑤The little creature in which scientists are interested is known as ET.
(這里"be interested in"是詞組原因)
⑥This is the book for which he is looking.
(即等于This is the book which he is looking for，這主要是因為look for 這一短語)
3.maximum
1)n.量;限度;點
This hall holds a maximum of seventy people.
這廳最多容納七十人。
2)adj.的;極限的
The maximum temperature in July may be 36 Celsius degree.
七月份溫度可能達到36攝氏度。
4.derive
1)v.獲取;得自;起源
We shall derive much benefit from reading good novels.
我們將從優(yōu)秀小說中獲得很大好處。
2)derive不論是用作不及物動詞,還是用作及物動詞,都與介詞from搭配使用,表示“從…得到或派生”。
Anna's strength is derived from her parents and her sisters...
安娜的堅強源自于她的父母和姐姐們。
【練習(xí)】
Wind power is an ancient source of energy ______ we may return in near future.
A. in which B. by which
C. to which D. from which
The science of horticulture, in which the primary concerns are maximum yield and superior quality, utilizes information derived from other sciences.
主要目的在于豐富和優(yōu)質(zhì)的農(nóng)藝學(xué)利用了其他科學(xué)的知識。
【解析】
1.horticulture n.園藝學(xué)
Horticulture is the industry and science of plant cultivation.
園藝是一種產(chǎn)業(yè)和科學(xué)的栽培植物。
2.in which, for which, on which, at which的不同用法
1)這些都是定語從句里面，由which引導(dǎo)的定語從句，介詞提前。下面這些介詞的使用除了意思上的區(qū)別，具體是要以which引導(dǎo)的從句而定的。
①in which可以翻譯成在……里面
The school (that/which) he once studied in is very famous.
= The school in which he once studied is very famous.
②for which可以翻譯成為了……目的
Tomorrow I will bring here a magazine (that/which) you asked for.
= Tomorrow I will bring here a magazine for which you asked.
③on which可以翻譯成在……的上面，或具體時間的某一天
I have a dresser in my bedroom, which there are many cosmetics on.
= I have a dresser in my bedroom on which there are many cosmetics.
④at which可以翻譯成在……里面或在……
The dumpling House which he often has dumplings at is very popular.
= The dumpling House is very popular, at which he often has dumplings.
2)當(dāng)然第一點只是介詞作為基本意思的用法，還有一些固定搭配，得具體情況具體分析。
①The plane may be several hours late, in which case there’s no point in our waiting.
(固定搭配：in the case)
②The speaker paused to examine his notes, at which point a loud crash was heard.
(固定搭配：at the point)
③Ten years of hard work changed her greatly, for which reason he could hardly recognize her at first sight.
(固定搭配：for the reason)
④The film at which I fell asleep was very boring.
(Here "at which" is based on "fell asleep at the film"因為電影無聊而睡覺。)
⑤The little creature in which scientists are interested is known as ET.
(這里"be interested in"是詞組原因)
⑥This is the book for which he is looking.
(即等于This is the book which he is looking for，這主要是因為look for 這一短語)
3.maximum
1)n.量;限度;點
This hall holds a maximum of seventy people.
這廳最多容納七十人。
2)adj.的;極限的
The maximum temperature in July may be 36 Celsius degree.
七月份溫度可能達到36攝氏度。
4.derive
1)v.獲取;得自;起源
We shall derive much benefit from reading good novels.
我們將從優(yōu)秀小說中獲得很大好處。
2)derive不論是用作不及物動詞,還是用作及物動詞,都與介詞from搭配使用,表示“從…得到或派生”。
Anna's strength is derived from her parents and her sisters...
安娜的堅強源自于她的父母和姐姐們。
【練習(xí)】
Wind power is an ancient source of energy ______ we may return in near future.
A. in which B. by which
C. to which D. from which