知识点——case用法及相关短语用法区别.ppt

1、,知识点 case用法及相关短语用法区别,case用法及相关短语用法区别,【知识点解析】,一、case作名词的用法 1. case有“情况、事实”之意。如： Is it the case that you have lost all your money? 你的钱全都损失了，是真的吗？ The police have a clear case against the prisoner. 警察有充足的事实对付那个囚犯。,case用法及相关短语用法区别,【知识点解析】,case作此义时，常用于以下一些固定短语： in that / this case 如果那样/这样（的话）；在那种/这种情况下 I

2、n that case, wed better hold a discussion about the problem. 那样的话，我们最好对这一问题展开讨论。 He may not be back at six. In this case we wont wait for him. 他可能六点钟回不来。要是这样，我们就不等他了。,case用法及相关短语用法区别,【知识点解析】, in case of 如果， 万一，后接名词、代词或动名词。如： Take a spare tyre along in case of need. 带只备用轮胎去，以备不时之需。 Turn off the TV se

3、t in case of thunderstorm. 在雷雨时，关上电视机。 In case of fire, dial 119 at once. 如果发生火灾，立即拨打119。 而in the case of则是“就来说”。如： In the case of his health, it is fortunate for him to have recovered from his illness like this.,case用法及相关短语用法区别,【知识点解析】,就他的健康状况来说，能恢复到这样算是幸运的了。 Failure is no shame in the case of a sc

4、ientist. 就科学家来说，失败并非羞耻事。 case的这种用法，请看2003年的高考题： The sign reads “In case of fire, break the glass and push red button.” 不填; a B. 不填; the C. the; the D. a; a 答案：B,case用法及相关短语用法区别,【知识点解析】, in case 万一， 以防，如果，引导条件状语从句。如： In case he arrives before I get back, please ask him to wait. 万一我回来前他先到了，请叫他等我。 Plea

5、se remind me of it again tomorrow in case I forget. 请你明天再提醒我一下，免得我忘记。 注意： in case引出的条件从句所表示的意义是“预防某种情况的出现”；如果从句说的是一般的假设或条件，则要用if 。请比较：,case用法及相关短语用法区别,【知识点解析】,Ill tell him about the matter if I meet him. （不用in case） Take an umbrella in case it rains. （不用if ） 在上下文意义很明确时，有时可省去in case后从句的内容。如： I dont t

6、hink it will rain, but Ill take an umbrella in case (it rains). 请看高考题： I dont think Ill need any money but Ill bring some _. A. at last B. in case C. once again D. in time 答案：B,case用法及相关短语用法区别,【知识点解析】, in any case 无论如何，相当于whatever happens. 如： You should finish your composition before school is over

7、in any case. 无论如何，你必须在放学前完成作文。 In any case, Ill come over to the office tomorrow. 无论如何，我明天会来办公室的。 in no case决不，置于句首时，须用倒装语序。如： In no case shall we allow smoking in the classroom. 教室里决对不允许吸烟。 In no case shall you break the rule. 你决不能违反纪律。,case用法及相关短语用法区别,【知识点解析】, such being the case 既然如此，情况既然是这样 Such

8、 being the case, I have no more to say. 既然如此，我再无话可说。 Such being the case, we were very lucky to have a house of our own. 既然如此，我们能有一幢自己的房子就算很幸运了。 2. case作名词还有以下一些常见的意义： There is a beautiful jewel case on the desk. This is a case of fever. There are five cases of flu among the staff. When will the cas

9、e come before the court?,case用法及相关短语用法区别,【知识点解析】,二、case作动词的用法 1. 是及物动词，意为“将装入箱子”。 The goods have been cased up for transport. 货物已装箱待运。 2. be cased over with 则是“在上另加一层物质”。如： The copper was cased over with silver. 铜上镀着银。,case用法及相关短语用法区别,【知识点解析】,三、与for fear of 的比较 for fear of 意思是担心会使某事情发生，后面跟句子时用that不用

10、of，例如： Helen didnt want to get out of bed, for fear of waking her husband. 所以句子中不能用in case of，不可能表达成在可能误车的情况下早到，可以从case和fear就能看出： 1. in case of的本义是“在某种情况下”，强调的是“事情真的到了眼前该怎么办”； 2. for fear of的本义是“因为害怕某种情况出现”，强调的是“事情还没发生就事先担心或顾虑”,case用法及相关短语用法区别,【典型例题】,1. Women workers wear hats _their hair gets caugh

11、t in the machinery. A. If B. in case C. unless D. because 答案：B 解析：in case万一，假使； If 如果；unless除非； because因为。句意：女工人戴帽子，以防头发裹进机器里。,case用法及相关短语用法区别,【典型例题】,2. _ the fog, we should have reached our school. Because of B. In spite of C. In case of D. But for 答案：D 解析：but for表示“要不是的话”，通常与虚拟语气搭配使用。,case用法及相关短语用法