雅思文法結(jié)構(gòu)剖析

　　定語(yǔ)從句之一

　　1. The work that Tim Pons and his colleagues published last week is basic research into the portion of the brain, the cortex, that one scientist says is responsible for all the interesting things we do.

　　剖析：在這個(gè)長(zhǎng)句中, 共有兩個(gè)定語(yǔ)從句, 第一句是that...last week, 第二句是that...we do. 另外, 這里還出現(xiàn)一個(gè)同位語(yǔ)結(jié)構(gòu)the cortex, 以及一個(gè)插入成分one scientist says。所以, 經(jīng)過(guò)分析后的句子應(yīng)為: The work that Tim Pons and his colleagues published last week is basic research into the portion of the brain, the cortex, that one scientist says is responsible for all the interesting things we do.

　　2. An alternative measure used by Andronikou is the contact ratio, which is the inverse of tourism density, that is the ratio of the local population to tourist population.

　　剖析: 這里也有兩個(gè)定語(yǔ)從句, 分別由which is 和that is 帶起。此外, 這里還有一個(gè) 過(guò)去分詞短語(yǔ)used by Andronikou, 分析后如下: An alternative measure used by Andronikou is the contact ratio, which is the inverse of tourism density, that is the ratio of the local population to tourist population.