5、利用文中的反义词(对比关系)猜测词义。
表示对比关系的词汇和短语主要是unlike，not，but，however，despite，in spite of，in contrast和while引导的并列句。 Example：
All of these ideas about the communication of the future are fantacies ,to be sure ,but many of them are fantasies that are very likely to become realities .
fantasies与realities意思相反，可推测其词义为“幻想”。
6、利用因果关系猜测词义 在句子或段落中，若两个事物、现象之间构成因果关系，我们可以根据这种逻辑关系推知生词词义。 Example：
There were so many demonstrstors in the Red Square that he had to elbow his way through the crowd.
此句为结果状语从句，根据从句的描述“许多示威者”，我们便可推知elbow的词意“挤，挤过”。
好啦，该是显显身手的时候了～
（1）Unlike her gregarious sister，Jane is a shy person，who does not like to go to parties，or to make new friends.
根据文中Unlike的意思，shy person，who does not like to go to parties，or to make new friends应该表达了与“gregarious"相反的意思，所以gregarious的意思为“好交际的”。
（2）Andrew is one of the most supercilious men I know. His brother, in contrast, is quite humble and modest.
该例中supercilious 对许多人来说可能是个生词，但是句中的短语in contrast（相对照的，相对比的）可以提示我们supercilious和后面的词组humble and modest（谦卑又谦虚）是对比关系。分析出这种关系后，我们便能猜出supercilious的意思为“目空一切的，傲慢的”。
（3）Tom is considered an autocratic administrator because he makes decisions without seeking the opinions of others.
根据原因状语从句的内容，找们可以推断出生词autocratic指“独断专行的”。
（4）The teacher did not hear the knocking at the door because he was completely engrossed in his reading.
以因果关系为线索，可确定engrossed的意思为“被吸引”，“全神贯注”。 插播广告：本版面诚征节目主持人～http://bbs.freekaoyan.com/thread-156421-1-1.html
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[answer]1[/answer]
1）Unlike her gregarious sister，Jane is a shy person，who does not like to go to parties，or to make new friends. --性格开朗的
（2）Andrew is one of the most supercilious men I know. His brother, in contrast, is quite humble and modest.
--古板的
（3）Tom is considered an autocratic administrator because he makes decisions without seeking the opinions of others.
--独裁的
（4）The teacher did not hear the knocking at the door because he was completely engrossed in his reading.
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