1. I used to be a drug addict. 我曾经是个瘾君子。

　　“used to + 动词原形” 表示过去经常做的事或存在的状态。“would + 动词原形”也表示过去多次发生的习惯性动作。但二者之间仍存在区别：

　　1) would主要说明过去某一段时间的情况，常与表示过去的时间状语连用，意为“总是”、“总要”，而used to主要表示与现在相比，含有“过去如此，现在不再这样”的意思。 2) used to 可以与表示状态的动词连用，而would却只跟动态动词连用。如：

　　1) He would go to the drug dealer and buy some cocaine when he was in terrible pain. 他痛苦得要命时就去找毒贩子买可卡因。

　　2) Today's China is quite different from what it used to be. 今天的中国已不再是过去的样子了。

　　2. Both ways are dangerous. Users who inject the drug are also in more danger if they share needles with other users. 这两种吸毒方式都很危险。如果那些注射毒品的人和其他吸毒者共用针头的话，他们就会面临更多的危险。

　　1) “dangerous”和 “in danger”：要说明主语对其他人或事物构成威胁，通常用“be dangerous”，而“be in danger”表示主语自身处于危险之中。如：

　　Although the tiger is dangerous, some species are in great danger of dying out. 尽管老虎是危险动物，有些品种却处在濒临灭绝的危险中。

　　2) share (sth.) with sb. 意思是“与别人共有或合用某物”。如：

　　I left my textbook at home. Will you please share yours with me? 我把课本忘在家里了。我能跟你看一本吗？

　　3. Now I work in a center for drug addicts, helping others to stop taking drugs. 我现在在一家戒毒中心工作，帮助其他吸毒者戒毒。

　　“helping others to stop taking drugs” 是V-ing 形式在句子中作状语，表示方式或伴随情况。如：

　　The boy broke into a house, stealing some money. 那个男孩闯进一户人家， 偷了些钱。

　　4. Some people break the law in order to / so as to pay for their drugs. 有些人违法是为了弄钱买毒品。

　　to do sth., in order to do sth. 以及 so as to do sth. 均用来表示目的，这时，不定式的逻辑主语必须与主要动作的主语一致，否则，需要用 in order that-clause 或 so that-clause 来表示目的。比较：

　　He worked in a center for drug addicts in order to / so as to help others stop taking drugs.

　　We sent him to a center for drug addicts so that / in order that he could stop taking drugs.

　　5. Some people feel so nervous that they call the police. 有些人觉得太紧张了，于是就叫警察。

　　表示结果的状语从句, 通常用以下从属连词来引导：

　　1) so + adj./adv. + that-clause

　　2) such + a(n) + adj. + n. (单数形式) + that-clause

　　= so + adj. + a(n) + n.(单数形式)+ that-clause

　　3) such + adj. + n. (复数形式) + that-clause

　　4) such + adj. + n. (不可数) + that-clause

　　如: (1) The drug was so dangerous that he was almost dead.

　　(2) It was such fine weather that they decided to go outing.

　　(3) Cocaine was such a powerful drug that he became addictive to it at once.

　　= Cocaine was so powerful a drug that he became addictive to it at once.

　　(文/翟朔凤； 英语辅导报外研新标准高一版 04~05学年度第12期；版权归英语辅导报社所有，独家网络合作伙伴新浪教育，未经许可，不得以任何形式进行转载。)