105. This has also resulted in an increase in the sheer number of advertisements to which audiences are exposed.
譯文
這也使得觀眾能看到的（電視）廣告的數(shù)量大量增加。
點(diǎn)睛
本句的主干是this has also resulted in an increase。to which audiences are exposed是由“介詞＋關(guān)系代詞”引導(dǎo)的定語(yǔ)從句，修飾先行詞advertisements。
sheer的意思是“完全的，十足的”，表示幅度大；sheer number指“巨大的數(shù)量”。be exposed to的意思是“接觸；面臨”。
考點(diǎn)歸納
由“介詞＋關(guān)系代詞”引導(dǎo)的定語(yǔ)從句須注意的幾個(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：
On the isolated island, there wasn't a single person to whom she could turn for help. 在這座孤島上，沒(méi)有一個(gè)她可以尋求幫助的人。
此句可以改為：
On the isolated island, there wasn't a single person (who/whom/that) she could turn to for help.
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相關(guān)動(dòng)詞之后，不可放在that前面，但that可省略。如：
1) The house (that) we live in is not large. 我們住的房子不大。（√）
2) The house in that we live is not large.（×）
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：
1) 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。
2) Finally he finished the paper, most of which was downloaded from the Internet. 最后他終于完成了論文，但大部分是從網(wǎng)上下載的。
