2011年大学英语四级考试基础阅读综合辅导

　　1. 插入语

　　通常做解释说明作用

　　eg. Inventors are now working on new devices that would be fully placed， along with a tiny power pack， in the patient‘s chest.

　　In the past， making structures quake-resistant meant firm yet flexible materials， such as steel and wood， that bend without breaking.

　　2. 并列结构

　　（1） 句子和句子的并列

　　由标点符号（如分号；冒号：）或连接词连接的两个简单句的句子的并列（前后出现两个实意动词）

　　eg. We asked them to tell us whether each samples was Coke or Pepsi; then we analyzed the records statistically to compare the participants’ choices with what mere guess-work could have accomplished.

　　We encourage our pupils to use the library， and we teach them the skills they need in order to do this efficiently.

　　Having made a choice within these limits we can have certain alterations made， but apart from minor adjustments， we tend to be limited to what the stores have on their racks.

　　（2） 句子成分的并列（前后出现两个相同或相似结构或成分）

　　eg. He quickly found that children as young as four months would learn to turn their heads to right or left if the movement “switched on” a display of lights-and indeed that they were capable of learning quite complex turns to bring about this result， for instance， two left or two right， or even to make as many as three turns to one side.

　　Statuses are marvelous human inventions that enable us to get along with one another and to determine where we “fit” in society.

　　When you come to think of it， only a woman is capable of standing in front of a wardrobe packed full of clothes and announcing sadly that she has nothing to wear.

　　（3） 句子并列与句子成分并列共存

　　eg. For most people the sea was remote， and with the exception of early intercontinental travelers or others who earned a living from the sea， there was little reason to ask many questions about it， let alone to ask what lay beneath the surface.

　　If we look at man as an animal and try to analyze the environmental forces that are acting on the organism， we find that we have to deal with things like climate， soil， plants， and such-like factors common to all biological situations; but we also find， always， very important environmental influences that we can only class as “cultural”， which modify the physical and biological factors