新编大学英语4课件Unit 4 知识点UNIT4 KNOWLEDGEPOINT.pptx

1、1、key to （line 1）此处的 to 为介词。当key译为“答案”“秘诀”“关键”时，只与介词to连用。The key toto the grammar exercises is at the back of the book.语法练习的答案在书后。The key toto good health is to eat and sleep regularly.保持身体健康的秘诀是饮食和睡眠要有规律。若后接动词，要用动名词。lThe humble potato may be the key toto feeding the worlds population.这不起眼的土豆有可能是解决全

2、世界人口温饱的关键。表示“的钥匙”，其后用介词 to 或 of。lHave you got the key to of to of the door?你有这门的钥匙吗?类似用法：lthe answer toto the question lthe ticket toto the basketball matchlthe way to to success2、Here is how schools and parents can encourage this vital skill in children.（line 2）“本文将介绍一下学校和家长如何才能鼓励孩子发展这一至关重要的能力。”l这是

3、一个here的完全倒装，主语是由how引起的主语从句。l全部倒装是只将句子中的谓语动词全部置于主语之前。此结构通常只用于一般现在时和一般过去时。常见的结构有：1）here,there,now,then,thus等副词置于句首,谓语动词常用be,come,go,lie,run等表示来去或状态的动词。例如：Then came the chairman.那时总裁来了。Here is your letter.你的信。2）表示运动方向的副词或地点状语置于句首，谓语表示运动的动词。例如：lOut rushed a missile from under the bomber.轰炸机肚底下窜出一枚导弹。lAh

4、ead sat an old woman.前面坐着一个老妪。注意：上述全部倒装的句型结构的主语必须是名词，如果主语是人称代词则不能完全倒装。例如：Here he comes.他来了。Away they went.他们走开了。3、If Dick Drew had listened to his boss in 1925,we might not have a product that we now think of as practically essential：masking tape.（line 3）“如果1925年Dick Drew 听从了他老板的意见，也许我们就不会有遮护胶带这种用品了

5、。”l 这是一个由if引导的条件状语从句，句中用到了虚拟语气，这是一个对过去的虚拟。l对过去虚拟：If+had done，sb.+might/could/should/would+have donel对现在虚拟：If+did/were.，sb.+might/could/should/would+dol对将来虚拟：If+should do/were to/did，sb.+might/could/should/would+dol对过去虚拟：Had sb.done sth.，sb.+might/could/should/would+have donel对现在虚拟：Were sb.，sb.+might

6、/could/should/would+dol对将来虚拟：Should sb.do sth.，sb.+might/could/should/would+dol Were sb.to do/be sth.，sb.+might/could/should/would+dol如果我有时间会帮助你做此工作的。If I have time,I will help you with this work.l如果昨天下雨的话，我们就会留在家里。If it had rained yesterday,we would have stayed at home.l如果我是你的话，就去参加会议了。If I were yo

7、u,I would have attended the meeting.l要不是你早些离开，恐怕就错过了火车。（倒装句）Had you not left so early，you might missed the train.4、masking tape （line 4）P138译为：遮蔽胶带5、sticky-side substance（line 6）P138译为：胶带6、pursue the idea（line 7）Pursue lvt.vt.1.追捕,追击2.追求3.继续;从事,经营4.进行，实行；继续；贯彻5.寻求；追查6.从事于，致力于7.纠缠；追逐lvi.vi.1.追，追赶2.继续

8、进行upursuepursuefame and fortune 追求名利uIt is my duty topursuepursuethis sport as long as I can,and to the best of my abilities.我的责任是尽可能长久地从事这项运动，而且尽我最大的能力做好。uThe childrenpursuepursuetheir study,undisturbed by the many visitor.孩子们继续学习，不因许多来访者而分心。7、Finally，using his own time，Drew perfected the tape，whic

9、h now is used everywhere by many people.（line 7）“最后Drew 只好利用自己的时间改进了这种胶带，这种胶带已被人们广泛使用。”l这里的“using his own time”是动名词短语用作伴随状语。lPerfect 这里用作动词，表示“使完美”。l这里“which”引导了以个定语从句，在定语从句中做主语。8、Now 3M encourages people to spend just thinking and developing new ideas.(line 9)Spend+(in)doing sth.或是 spend+on sth.l表示

10、“花费时间做某事”9、It is a strategy that more and more companies are employing and one that experts around the country say we ought to be following with our children,both at home and at school.(line 11)“现在这种策略已被越来越多的公司采用，而且全国各地的专家认为，对待孩子也应效仿这种做法，无论是在家里还是在学校。”l句中“that”引导的是定语从句，先行词是“strategy”后面的“one”在句中代替“strategy”，也是定语从句。