TextA What Is a Decision?
A decision is a choice made from among alternative courses of action that are available.The purpose of making a decision is to establish and achieve organizational goals and objectives.The reason for making a decision is that a problem exists，goals or objectives are wrong，or something is standing in the way of accomplishing them.
1.made from among alternative courses of action.是过去分词短语作定语。
courses of action行动方针that are available是定语从句，修饰概念短语“行动方针”。
2.The reason for making a decision is that a problem exists，goals or objectives are wrong，or something is standing in the way of accomplishing them.
此句是由that引导的表语从句，表语从句由a problem exist;goals of objectives are wrong及something is standing in the way of accomplishing them三个并列句构成。
The reason for…is that是一个常用的句子。例：The reason for canceling the travel is that they lack of money.取消旅行的原因是他们手头缺钱。
The reason why…是另外一个常用的句子。例：There are 3 reasons why they are unwilling to discuss insurance.他们不愿意谈论保险的原因有三个。
Thus the decision-making process is fundamental to management.Almost everything a manager does involves decisions，indeed，some suggest that the management process is decision making.Although managers cannot predict the future，many of their decisions require that they consider possible future events.Often managers must make a best guess at what the future will be and try to leave as little as possible to chance，but since uncertainty is always there，risk accompanies decisions.Sometimes the consequences of a poor decision are slight;at other times they are serious.
3.a manager does是省略that的定语从句，修饰先行词everything
当先行词为everything，something，anything，nothing等不定代词时，定语从句引导词不可用which，此句的后半部分some suggest that……是宾语从句。
例如：Although my car is very old，it still runs very well.
5.Often managers must make a best guess at what the future will be and try to leave as little as possible to chance，but since uncertainty is always there，risk accompanies decisions.
make a best guess at作出最佳猜测，at表示动作或行为的方向和目标，如：look at(看)，aim at(瞄准，目的是)，throw(a stone)at(向…掷石头)，shoot at(射击)，laugh at(嘲笑)
本句中what the future will be是一个介词宾语从句，(作介词at的宾语);
to leave sth.to chance“凭运气，听任命运的安排，听其自然发展”
as little as possible尽可能少
I tried to be as friendly as possible.我尽量地表示友好。
Come as quickly as possible.尽快来。
sometimes…at other times有时…，而有时则…
a poor decision一个不良决策
Choice is the opportunity to select among alternatives.If there is no choice，there is no decision to be made.Decision making is the process of choosing，and many decisions have a broad range of choice.For example，a student may be able to choose among a number of different courses in order to implement the decision to obtain a college degree.For managers，every decision has constraints based on policies，procedures，laws，precedents，and the like.These constraints exist at all levels of the organization.
2.由if引导的条件状语从句，主句中的不定式被动态to be made作定语，修饰decision
3.range n.范围a broad range of choice一个很广的选择范围
For managers，every decision has constraints based on policies，procedures，laws，precedents，and the like.
1.be based on表示“建立在…基础上;本句中based on是一个过去分词作定语修饰constraints。
例：The book is based on a true story.这本书是以一个真实的故事为依据的。
He was the first to draw a map that was based on all available knowledge，rather than guess or imagination.他第一个画出以当时所有的知识为基础的地图，而不是基于猜测和想象。
2.and the like意思是“等等(之类的东西)”。
例：He studied painting，music，English and the like.他学习了绘画、音乐、英语等等。
Alternatives are the possible courses of action from which choices can be made.If there are no alternatives，there is no choice and，therefore，no decision.If no alternatives are seen，often it means that a thorough job of examining the problems has not been done.For example，managers sometimes treat problems in an either/or fashion;this is their way of simplifying complex problems.But the tendency to simplify blinds them to other alternatives.
1.from which引导定语从句，修饰courses of action行动方针
2.a thorough job of examining一个彻底的考察工作
a thorough job是主语，of examining the problems修饰job，has not been done是句子的谓语。
For example，managers sometimes treat problems in an either/or fashion
例：We fight，or we don't——it's an either/or decision.