13.investment ：n. 投资，投入 派生词：invest v. 投资，投入

　　Stocks are regarded as good long-term investments. 股票被认为是理想的长期投资。

　　His investment in that business have done well. 他在那家商行的投资收益很好。

　　词组：phrases

　　1.to excess 过分，过度，过量

　　They both eat to excess. 他们俩都吃得过多。

　　The heavy rain filled the lakes to excess. 大雨使湖水超过了湖的容量。

　　2.to substitute…for ：用…替代

　　You can substitute vegetable oil for butter in this recipe.

　　在这一食谱中，你可以用植物油代替黄油。

　　3.be contrary to：与…… 相反

　　His actions are contrary to the rules. 他的行为与这些规则相违背。

　　Contrary to all our expectations he‘s actually found a well-paid job and a nice girlfriend.

　　与我们大家的预料相反，他竟然找到了一份报酬优厚的工作和一个很好的女朋友。

　　4.to put off： 延期；阻碍

　　The meeting has been put off for a week. 会议延期一周。

　　I can‘t put off going to the dentist any longer. 我得去看医生，不能再耽搁了。

　　5.to gaze at：凝视，注视近义词：to stare at 瞪着，怒视

　　What are you gazing at？ 你在盯着看什么？

　　6.to impress …on ：使铭记，牢记

　　My father impressed on me the value of hard work. 父亲要我铭记努力工作的重要性。

　　7.be free from ：没有…的；不受…的

　　He wished to live a life entirely free from troubles. 他希望能过上一种无忧无虑的生活。

　　8.to put aside ： 把…放在一边

　　She put the newspaper aside and picked up a book. 她把报纸放下，拿起了一本书。

　　Every week I put aside a bit of money for a rainy day. 每周我都存点钱，以备不时之需。

　　9.be beneficial to ：对…有益，对…有利

　　Fresh air is beneficial to one‘s health. 新鲜的空气有益健康。

　　Daydreaming is highly beneficial to your health. 梦幻非常有益于你的健康。

　　To come up with 提出

　　课文精讲：

　　Let Your Mind Wander

　　Until recently daydreaming was generally considered either a waste of time or a symptom of neurotic tendencies， and habitual daydreaming was regarded as evidence of maladjustment or an escape from life‘s realities and responsibilities. It was believed that habitual daydreaming would eventually distance people from society and reduce their effectiveness in coping with real problems. At its best， daydreaming was considered a compensatory substitute for the real things in life.①

　　1.句中as its best 是一个词组，意思是“更好也不过”；daydreaming 是动名词，在句中作主语；a compensatory… in life 作was considered 的主语补足语。

　　本句意思是：白日做梦更好也不过被认为是对生活中实际事物的一种补偿性的替代。

　　As with anything carried to excess， daydreaming can be harmful. There are always those who would substitute fantasy lives for the rewards of real activity. But such extremes are relatively rare， and there is a growing body of evidence to support the fact that most people suffer from a lack of daydreaming rather than an excess of it. ②

　　2.本句中由and连接的两个并列句；该句中to 引起的不定式结构一直到句尾，作evidence 的后置定语；在这一结构中，the fact 后又接由that 引起的同位语从句。本句意思：“但是这类极端的情况较为罕见，愈来愈多的证据却支持这样一种现象，即大部分人受白日做梦过少而不是过多之苦。”

　　We are now beginning to learn how valuable it really is and that when individuals are completely prevented from daydreaming， their emotional balance can be disturbed.③

　　3.该句中的how 和that 引起一个名词性从句作动词learn 的宾语。在that 引起的从句中，when 又引导一个从句作状语。本句意思：“现在我们开始了解，白日做梦如何真有价值。并且人如果白日完全不做梦，他们的情绪平衡会被打乱。”

　　Not only are they less able to deal with the pressures of day-to-day existence， but also their self-control and self-direction become endangered.④

　　4.本句是由not only 和but also 连接的两个并列分句。“not only ”否定词放在句首，因此句子要倒装。本句意思：“不仅他们应付每日生活的压力的能力会变差，他们的自我控制和自我导向能力也会受到损害。”

　　Recent research indicates that daydreaming is part of daily life and that a certain amount each day is essential for maintaining equilibrium.⑤