122. Melina Kunar of the University of Warwick, and Todd Horowitz of Harvard Medical School ran a series of experiments in which two groups of volunteers had to pay attention and respond to a series of moving tasks on a computer screen that were reckoned equivalent in difficulty to driving.
譯文
華威大學(xué)的梅利娜·庫(kù)娜和哈佛醫(yī)學(xué)院的托德·霍羅威茨做了一系列試驗(yàn)，他們讓兩組志愿者注意電腦屏幕上的一系列移動(dòng)任務(wù)并作出反應(yīng)，這些任務(wù)被認(rèn)為與開(kāi)車的難度相當(dāng)。
點(diǎn)睛
本句的主干是Melina Kunar...and Todd Horowitz...ran...experiments...。其中，in which two groups of volunteers...to driving屬于“介詞＋關(guān)系代詞”引導(dǎo)的定語(yǔ)從句，修飾先行詞experiments，該從句中又包含一個(gè)that引導(dǎo)的定語(yǔ)從句，修飾先行詞moving tasks。
reckon意為“認(rèn)為”，此外它還含有“考慮；估計(jì)”之意。如：
I have to reckon the cost before I book the tickets. 我得先算一下費(fèi)用，然后再訂票。
equivalent意為“相等的；相當(dāng)?shù)?rdquo;。如：
This qualification is equivalent to a degree. 這個(gè)資格證書相當(dāng)于學(xué)位證。
考點(diǎn)歸納
由“介詞＋關(guān)系代詞”引出的定語(yǔ)從句須注意以下幾個(gè)問(wèn)題：
關(guān)系代詞which和whom在定語(yǔ)從句中作介詞的賓語(yǔ)時(shí)，介詞可放在關(guān)系代詞之前，也可放在該定語(yǔ)從句中的動(dòng)詞之后（此時(shí)，which可用that代替，whom可用who或that代替。在口語(yǔ)和非正式文體中，關(guān)系代詞可以省略）。如：
I'm looking for a friend with whom I can chat on msn. 我在尋找一個(gè)能和我用msn聊天的朋友。
此句可以改為：I'm looking for a friend (who/whom/that) I can chat on msn with.
關(guān)系代詞that在定語(yǔ)從句中作介詞的賓語(yǔ)時(shí)，介詞只能放在從句中de相關(guān)動(dòng)詞之后，不可放在that前面，但that可省略。如：
The position(that) she applied for is very attractive. 她申請(qǐng)的那個(gè)職位很有吸引力。（√）
The position for that she applied is very attractive. (×)
在由“代詞＋of＋關(guān)系代詞”結(jié)構(gòu)引導(dǎo)的定語(yǔ)從句中，先行詞指“人”時(shí)用whom,指“物”時(shí)用which。如：
There are 50 students in my class, most of whom are girls. 我們班上有50個(gè)學(xué)生，其中大多數(shù)是女孩。
He has a large collection of books, many of which are written in English. 他藏書很多，大部分是英文書。
