大学英语2电子教案6_5
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Unit SixI. Background InformationHeart diseaseIn today's society, people are gaining medical knowledge at quite a fast pace. Treatments, cures, and vaccines for various diseases and disorders are being developed constantly, and yet, heart disease remains the number one killer in the world. The media today concentrates intensely on drug and alcohol abuse, homicides, AIDS and so on. What a lot of people are not realizing is that heart disease actually accounts for about 80% of all sudden deaths. In fact, the number of deaths from heart disease approximately equals to the number of deaths from cancer, accidents, chronic lung disease, and others, COMBINED. One of the symptoms of heart disease is angina pectoris(心绞痛). Unfortunately, a lot of people do not take it seriously, and thus not realizing that it may lead to other complications（并发症）, and even death. It’s very important for people to have a correct attitude towards heart disease.II. Language PointsText A1. preventvt.阻止,妨碍(宾语后面常用from)；预防，防止e.g. Nothing can prevent him. 什么也阻止不了他。
The rain prevented me from going. 这场雨把我阻挡住了。
Her illness prevented her from attending the meeting. 她病了，不能去开会。
2.enablevt. 使能够，使可以（宾语后面接不定式）e.g. Airplanes enable people to travel through the air. 飞机使人民得以在空中旅行。
Hard work enabled him to pass the examinations. 勤奋使他通过了这些考试。
3．benefitvi. 得益于；从……得到好处（通常与from或by连用）vt. 有益于（A benefit B=B benefit from / by A）n.利益，益处e.g. students of foreign languages benefit greatly by reading aloud every morning.晨读对学外语的学生极为有益。
We benefited from our visits to the library. 我们常到图书馆去，收益很大。
The money should be used for the benefit of the poor.这笔钱应该用来帮助穷人。
4. recovervt. 1重新获得，重新找到；2.收回，挽回vi. The police recovered the stolen car. 警方找回了被盗的车。
e.g.We must recover our losses somehow. 我们必须设法挽回损失。
I hope you will soon recover. 希望你早日康复。
5. emphasizevt. 强调，着重e.g. The policeman emphasized the importance of careful driving. 警察强调了小心驾驶的重要性。
The author emphasized that most of the book is his own experiences. 作者强调说这本书的大部分是他自己的亲身经历。
6．lackvt.缺乏，缺少，没有n.缺乏，不足for lack of因缺乏……lack sth./be lacking in sth.缺乏……e.g. I’m afraid he’s somewhat lacking in intelligence. 我担心他缺少一些智慧。
7．resultvi.发生，因……引起；造成……的结果；结果n.结果，效果，成绩；result from发生，因……引起；result in 引导，导致；as a result作为结果；as a result of 由于，作为……的结果；with the result that 因此；without result毫无结果地e.g. Any damage resulting from negligence must be paid for by the borrower. 因疏忽引起的任何损坏应由借用者负责赔偿。
Their dispute resulted in war. 他们的争论终于造成战争。
Her efforts resulted badly. 她的努力结果不佳。
She was fired as a result of being careless at work. 她由于工作粗心而被炒鱿鱼。
8．responsibilityn. 责任，负责 (常用词组：take responsibility for 负起对……的责任)e.g. You did it on your own responsibility.你那么做是出于自己的责任。
I will lend you my camera if you will assume full responsibility for it. 如果你能负全责，我就把我的照相机借给你。
9. associatev.使发生联系；与……交往，与……结交associate… with…意思是“把……与……联系在一起”。
We associate Egypt with the Nile. 我们想起埃及就想起尼罗河。
associate with意思则是“与……常在一起，结交，与……为友”。
例如：Don’t associate with dishonest boys. 勿与不诚实的男孩为友。
10. take place意思是“发生，产生；进行，举行”。
The wedding took place yesterday. 婚礼在昨日举行。
The story took place many years ago.这个故事发生在很多年以前。
take place 仅指“发生”这一动作，主语只能是物，且多指“按计划、安排举行的活动”；happen偶然性较强，主语可以是人，有“碰巧”的意思；break out意为“爆发”，多指规模较大的事件，如战争，疾病，灾害，地震等。
Text B1. considerv. 考虑，细想，认为，把……看作，通常后接（动）名词，从句，可跟双宾语，不定式。
consider sb. (to be) sth. 表示：认为某人是……；be considered/said/ believed to do 表示：据认为/据说/据相信做……（若后面的动作若已经发生，则用完成时表示）。
e.g. Please consider my suggestion. 请考虑我的建议。
We are considering going to Canada. 我们正考虑赴加拿大。
Have you considered how to get there? 你曾考虑到如何能到达那里吗？They consider Jim (to be) the cleverest boy in their class. 他们认为吉姆是他们班最聪明的学生。
She is considered to have done wonderfully in the final exam. 她被认为在期末考试中表现得非常出色。
2. go (on) + 表示某种行为的名词通常表达“去做…”或“进行…”的意思。
此用法中的on有时可以省掉。
例如：My parents have decided to go on a journey to Shanghai next month.go on 还有许多别的意思，如“发生”、“进行”、“继续”等。
例如：e.g. What’s going on out there? 那里发生什么事？As time went on, things began to change. 随着时间流逝，事情开始发生变化。
You oughtn’t to go on living this way. 你不应继续这样的生活。
3．harmn.& vi.伤害，损害，危害e.g. The drought did a lot of harm to the crops.干旱给庄稼带来许多危害。
I mean no harm to her.我对她并无恶意。
Getting up early won't harm you!早起对你没有坏处。
4. as though/ifas if和as though 的意思是“好像…；似乎…”，引出的从句中的动词常用虚拟语气。
e.g. I remember the whole thing as if/ as though it happened yesterday. 我记得这一切，就像它是昨天才发生似的。
It seemed as if the night would never end. 似乎这一夜永远过不完。
但现在as if/as though后的从句中谓语动词中用陈述语气的情况也不少。
It looks as if they are all in a terrible hurry. 看起来他们似乎非常匆忙。
