结合语境记单词是掌握单词用法的关键

　　所谓语境是指语言环境或上下文(context)。

　　121. heir  与其同音的词是air 他们是同音异义词

　　heir   n. 继承人    heiress  女继承人

　　the right (true) heir 合法继承人，the legal (natural) heir 法定继承人

　　The eldest son is usually the heir.

　　He is heir to a large fortune.

　　He is the only heir to the throne.

　　122. identical  adj.    identical to/with 统一的，一样的 =same as

　　The finger prints of no two persons are identical.

　　They are the twins with the identical voices.

　　These books are identical with the ones I bought last week.

　　辨析：alike, equal, equivalent, identical, same

　　alike  作后置定语或表语，强调“相像的，相似的”， 其前面只可用much修饰;

　　They are much alike in character.

　　equal  特指数量、地位、价值等相同，be equal to ;

　　He speaks English and French with equal ease.

　　An hour is equal to sixty minutes.

　　Your achievement is equal to his.

　　equivalent 一般指时间、价值、数值相同，“相等的，等值的，等量的”be equivalent to；

　　Independence Day is equivalent to Chinese National Day.

　　What is $5 equivalent to in French francs?

　　identical 强调完完全全的相同，等于the same;

　　same  比identical用法更自由，一般作定语，或搭配the same as

　　I was in the same class with him.

　　Her hair's the same colour as her mother's.

　　123. idle  adj.  空闲的，懒惰的   指闲散，无所事事，不工作或无工作可做；

　　lazy 指本性懒惰，厌恶工作。

　　stand idle 袖手旁观   an idle rumor  毫无根据的谣言

　　He is an idle boy who does nothing every day.

　　He is too idle to do anything.

　　124. illiterate  adj.  未受教育的，文盲的 literate –illiterate  unable to read and write

　　There is a largely illiterate population in that area.

　　We didn’t know who wrote the illiterate letter?

　　125. impact  n.  影响，冲击  =effect       make /have an impact on  对…有影响

　　The book had a great impact on its readers.

　　The new ideas have impact on the young generation.

　　The full impact of the news hit us several days later.

　　126. impartial  adj.  公平的，不偏不倚的  =fair

　　A judge must be completely impartial.

　　Try to remain impartial until you have heard both sides of the story.

　　The committee made an impartial decision after three days’ discussion.

　　127. impulse  vt.  推动  give a push

　　The introduction of the new machines made the production impulse.

　　n. 冲动

　　A sudden impulse of anger arose in him.

　　He bought the car on impulse.

　　She had the impulse to hit him.

　　128. incentive  n.  动机，目的   motive

　　have incentive to sth\to do sth\to doing sth

　　He has much incentive to study hard.

　　They have many incentives to work long hours.

　　129. indulge  vt.  纵容，放纵  spoil

　　The rich father indulged his son with plenty of pocket money.

　　He indulged his fondness for meat.

　　I sometimes indulge myself for expensive shoes.

　　130. inevitable  adj.   不可避免的  unavoidable

　　Traffic jam is inevitable during the rush-hours in Beijing.

　　Pain is inevitable when one breaks a bone.

　　It’s inevitable for her to know the truth.

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