考点例析：
例1： If his aim is inaccurate and he scores a goal, enjoys S3.____
the hunter’s triumph of killing his prey.
解析：这是由一个条件状语从句引导的复合句。但主句只有谓语动词enjoys，缺少主语，因此要步上主语。根据从句的his aim可推断应该加上主语he。
例2：Nuclear physicists who interested in the structure of 5._________
atoms cannot observe protons, electrons and neutrons
directly.
解析：如果将who后面的部分作定语从句，那么它绝少谓语，故将who去掉，此时分词短语interested in直接作定语修饰前面的physicists。或在who后加are，补全定语从句。
例3：This alliance guarantees that all leprosy patients, even they S6.______
are poor, have a right to the most modern treatment.
解析：even是副词，后面不能直接跟句子，根据句子的意思，应该在even后加if或though。
巩固与拓展
1. A student of music needs as long and as arduous a training
to become a performer a medical student needs to become __________
a doctor.
2. This trip can be found in a booklet, Passport to the Pub:
The Tourists’ Guide to Pub Etiquette, a customers’ code of
conduct for those want to sample "a central part of British ________
life and culture.
3. When a new robot is introduced to a small suburban
factory, a Shinto priest is invited to inaugurate. _________
4. Since the law made easier to get a divorce, the number of __________
divorces has increased.
5. Another changehas been caused by the fact people are _______
living longer nowadays, and many old people live alone
following the death of their partners
综合训练
Many peolpe than ever are drinking coffee these days -- but in small 1.____
quantities than they used to. Some manufacturers of coffee makers are
trying to make advantage of this trend by developing diminutive machines 2.___
that brew（煮）smaller amounts of coffee. Two U.S appliance companies
---Black&Decker, basing in Twson, Maryland, and Toastmaster Inc. 3.___
of Columbia, Missouri ---has recently introduce "drip" Coffee makers that 4.____
brew one or two cup servings of coffee. Neither of the products brew the 5._____
coffee directly into a cup or mug, eliminating the need for a separate
carafe. Since many people make a pot of coffee in the morning and drink 6.____
only a single cup, the new cofee makers should reduce the wasted coffee.
Black&Decker’s Cup-at-a-Time spends $27, while Toastmaster’s Coffee 7.___
Break retails for $20.
Black&Decker also makes a coffee maker drips coffee directly into a 8.____
carry-around thermal carafe. The carafe, a glass vacuum bottle, is supposed
to keep the coffee fresh for hours. The product, called the Thermal Carafe
coffee-maker, comes with a built-in lid that opens during the brewing
process, closes when it is completed. There are several models, including 9.____
one that firs under the counter, ranging from $60 to $110 at price. 10._____
参考答案及解析：
巩固与拓展：
1. 在performer后加as
此处为同级比较，固定结构为as...as...，而原句比较的对象a medical student前缺少连词as。
2. want -> wanting或those后加who
for为介词，后面的宾语时代词those，不可再跟主谓结构。故将want改为wanting，用现在分词短语作定语修饰those，或者在want前加who构成定语从句修饰those.
3. inaugurate后加it
4. made后加it
句子主语是law，谓语是made，easier是宾语补足语，逻辑宾语是to get a divorce，可见此句缺少形式宾语it.
5. fact后加that
fact之后的部分是同位语从句，补充说明fact，其引导词不能省略。
综合训练
1. small -> smaller
该句后面有than，所以前面应该是smaller。
2. make -> take
take advantage of 为固定搭配，意思为“利用”，与其同样意思的词组还有make use of。
3.basing -> based
base和它的逻辑主语是被动关系。
4. has -> have
句子的主语是two US appliance companies, 谓语动词要用复数。
5. Neither -> Both
根据文章的中心观点，这里时说两种产品都如何。故要用both
6. and -> but
本句的意思应该是：大部分人都是早上煮一壶咖啡 但却只喝一小杯。并列句前后应该是转折关系。
7. spends -> costs
spend的主语必须是人，此处主语是物，应该用cost表示 “该物花费了多少”。
8. maker 后加that或which
一个句子在没有连词的情况下不能带有两个谓语，本句的谓语是makes，而drips和之后的部分应该是定语从句修饰coffee maker，又由于先行词在从句中作主语，所以引导词不能省略。
9. closes前加and
在英语中，用逗号连接两个独立的主谓结构是不对的，所以要在closes前加and。
10. at -> in
表示“在...方面”，使用介词in．