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● 题目：
If you plot the amount of time a juvenile devotes to play each day over the course of its development, you discover a pattern typically associated with a ‘sensitive period’—a brief development window during which the brain can actually be modified in ways that are not possible earlier or later in life. (test2 passage 3)
● 分析：
本句较长，主句为“you discover a pattern”;“If you plot the amount of time”为if引导的本句的条件状语从句;“a juvenile devotes to play each day over the course of its development”为定语从句，作time的定语，关系词在定语从句中作宾语，被省略;“associated with a ‘sensitive period’”为过去分词短语作定语;“during which the brain can actually be modified”为which引导的定语从句，作window的定语从句;“that are not possible earlier or later in life”为定语从句，作ways的定语，关系词为that。
● 题目：
These fracture zones, where the collisions occur, are where earthquakes happen. (test3 passage 2)
● 分析：
本句的主句为“These fracture zones are where earthquakes happen”;“where the collisions occur”为定语从句，作zones的定语，关系词为where;“where earthquakes happen”为where引导的表语从句。
● 题目：
When studying their mother tongue, linguists act as their own informants, judging the ambiguity, acceptability, or other properties of utterances against their own intuitions. (test3 passage 3)
● 分析：
本句的主句为“linguists act as their own informants”, “When studying their mother tongue”为when引导的现在分词短语做时间状语;“judging the ambiguity, acceptability, or other properties of utterances against their own intuitions.”为现在分词短语做伴随状语，引导词省略。
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