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adj. 在 ... 之前，先，前，以前的
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1. They found evidence that married couples are more likely to have genetic differences in a DNA region governing the immune system than were randomly matched pairs.
本句是一个复合句，主句是They found evidence。 that引导同位语从句，解释说明evidence。其中governing the immune system现在分词短语作后置定语修饰DNA region。
语法重点：同位语从句，分词短语作定语
2. Although it may be tempting to think humans choose their partners because of their similarities, our research has shown clear1y that it is differences that make for successful reproduction, and that the University drive have healthy children is important when choosing a mate.
本句是一个复合句。 Although引导让步状语从句。后面第一个that引导宾语从句，作shown的宾语，其中it is...that...是强调句型，对difference进行强调。第三个that同样引导宾语从句，作shown的宾语。其中to have healthy children不定式短语作后置定语，修饰 subconscious drive。 when choosing a mate为现在分词短语做时间状语。
语法重点：让步状语从句，宾语从句，强调句型，不定式短语作定语
| 重点单词 | 查看全部解释 | |||
| previous | ['pri:vjəs] | 联想记忆 | ||
| immune | [i'mju:n] | |||
| ward | [wɔ:d] | |||
| reproduction | [.ri:prə'dʌkʃən] | |||
| diverse | [dai'və:s] | 联想记忆 | ||
| speculation | [.spekju'leiʃən] | 联想记忆 | ||
| evolutionary | [.i:və'lu:ʃnəri] | |||
| odor | ['əudə] | |||
| summary | ['sʌməri] | 联想记忆 | ||
| statement | ['steitmənt] | 联想记忆 |
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