cannot(或cannot)和too的特定用法大學(xué)英語四級輔導(dǎo).ppt

1、一、too.to結(jié)構(gòu)通常表示否定意義,意思是太不能,太不會.例如: Its too early for us to go yet.現(xiàn)在太早了,我們不會去的. It is too late for us to catch the train.太晚了,我們趕不上火車了. . too.for也表示否定意義,相當(dāng)于too.to,意為太不適合(不能).例如: He is too young for the work他太年輕,不適合這份工作. Its too cold outside for jogging. 外面太冷了,不能去跑步.,二、too.to結(jié)構(gòu)并不一定都表示否定意義,遇到下面幾種情況時,too

2、.to結(jié)構(gòu)表示肯定意義. 1.當(dāng)too前面有only, all, not, but, never, simply, just等詞時,too.to結(jié)構(gòu)表示肯定意義.例如: I am only too pleased to see you.非常高興見到你. You know but too well to hold your tongue.你深知少說為妙. 2. 當(dāng)too后面是 eager, anxious, pleased, kind, willing, inclined, ready, glad, quick等詞時,too.to結(jié)構(gòu)表示肯定意義.例如: I am too eager to go

3、 there. 我太想去那里了.,3. too.to結(jié)構(gòu)的否定形式表示肯定意義,有兩種變法: 一是在too前加not,構(gòu)成not too.to,通常否定整個too.to結(jié)構(gòu)而表示肯定含義,意為并不太,所以能.例如: The article is not too difficult to translate.這篇文章并不太難,很容易翻譯. She is not too angry to speak up. 她不太生氣,能夠說出話來. 另一種方法是在不定式to do前加not,通過否定不定式而表示肯定含義,大致相當(dāng)于so.that one can,意思是太一定能(不可能不)、太忍不住(不免).例如

4、: He is too clever not to understand the importance of this question.=He is so clever that he can understand the importance of this question.他太聰明了,一定能(不可能不)懂得這個問題的重要性. She was too angry not to say what she thought.=She was so angry that she could not but say what she thought.她太氣憤了,忍不住要說出心里的話.,練習(xí):Tra

5、nslate the following sentences into Chinese. 1. He is too old to have the book completed. 2. It was too good an opportunity to miss. 3. He is too much of a coward to fight. 4. The river is too wide for us to swim across. 5. He is too ready to promise. 6. I am too glad to help you. 7. He has seen too

6、 much of the world not to do better. 8. The book is not too difficult to understand. 9. The wall is too high for her to climb. 10. He is too kind not to be stupid.,參考答案: 1. 他垂垂老矣,這本書寫不完了. 2. 那是一個很好的機(jī)會,不應(yīng)該錯過. 3. 他太懦弱,不敢抗?fàn)? 4. 這條河太寬了,我們游不過去. 5. 他總是輕易許諾. 6. 我非常樂意幫助你. 7. 他深諳世事,知道如何做得更好. 8. 這本書不太難,很容易理解.

7、 9. 這堵墻太高了,她爬不過去. 10. 他太善良了,難免有些愚蠢.,cannot(或can not)和too連用時的特殊意義及其變體形式,在1997年6月四級考試中，有這樣一道選擇題： You cannot be careful when you drive a car. A. very B. so C. too D. enough,cannot(或can not)和too連用時的特殊意義及其變體形式,此題的正確答案是C項。 Cannot（或can not）和too連用時，絕不能想當(dāng)然地按“不可能太”來理解，它們連用時構(gòu)成一個特殊結(jié)構(gòu)，表示一種極為強(qiáng)烈的肯定意義，表示“怎樣也不過分”、“應(yīng)

8、盡量”、“越越好”之意。例如： We cannot estimate the value of modern science too much. 現(xiàn)代科學(xué)的價值，無論如何重視也不算過分。 It cannot be too strongly emphasized that mathematics is the basis of science. 數(shù)學(xué)是科學(xué)的基礎(chǔ)，這一點(diǎn)無論怎樣強(qiáng)調(diào)都不算過分。,應(yīng)該注意的是，cannottoo這一特殊結(jié)構(gòu)有以下一些變體形式，即結(jié)構(gòu)稍有變化但表達(dá)意義不變。 1）can nevertoo One can never be too careful in ones wo

9、rk. 我們的工作越過細(xì)越好。 2）cannotover The importance of making an on the spot investigation cannot be over emphasized. 進(jìn)行現(xiàn)場調(diào)查的重要性無論怎樣強(qiáng)調(diào)也不會過分的。 3）can scarcely/hardlytoo We can scarcely pay too high a price for national security. 為了國家安全我們不管付出什么代價也不嫌太高。,His contribution to modern science can hardly be overrated

10、. 他對現(xiàn)代科學(xué)的貢獻(xiàn)，無論如何估計也不會過高。（動詞overrate中的詞頭over已包含有too much之意，因為over-含有“過分”、“過頭”之意。） 4）cannotenough/sufficient I cannot thank you enough for your great kindness. 對你的盛情美意我感激不盡。 You cannot take sufficient care. 你必須十分小心。 5）be impossible totoo/over It is impossible to criticize too severely his conduct.對他這種行為批評得越嚴(yán)厲越好。 It is impossible to overpraise his work. 我們怎樣稱贊他的工作也不算過分。,6）be difficulttoo It will be difficult to speak to him too seve