i was in bookshop and 发现 a 本 题为 how to make friends width forengers 的书 by Li Yang of  crazy english 声望。一条提议 really 吸引了 my attention and i must say,made me feel 恼怒的。

I cannot complain too much。

我无论怎么抱怨都不过分。

You can never put too much emphasis on English learning.
再怎么强调英语学习也不为过.

 

（ 2003 北京春） —— I was riding along the street and all of a sudden， a car cut in and knocked me down.

    ---- You can never be ________ careful in the street.

　　A. much B. very C. so D. too

　　分析：该题考查的是“ cannot （ never ）……too…… ”结构的用法。答案为 D .此题意为：

　　––– 我在街上骑车，突然一辆汽车超车，把我撞倒。

　　––– 在街上骑车，你越小心越好。

　　“ cannot…… too…… ”结构表示“无论怎么……也不算过分”、“越……越好”、“要格外……”、“应该特别……”等意思。表示此意的结构有下列几种：

　　1. cannot ＋动词＋ too ＋形容词或副词，例如：

　　We cannot be too careful in doing experiments. 我们做实验时越仔细越好。

　　I cannot thank you too much. 我无论怎么感谢你也不过分。

　　2. cannot ＋ over- 动词 /cannot + be + over- 形容词，例如：

　　We cannot overemphasize the importance of learning a foreign language. 我们无论怎么强调学外语的重要性也不过分。

　　We cannot be overvigilant. 我们应该特别警惕。

　　3. cannot ＋动词＋ too much （ much enough ） ，例如：

　　We cannot praise him too much. 我们无论怎样表扬他也不算过分。

　　He is very reliable. You can't trust him too much （ much enough ）。 他很可靠，他是你最值得信赖的人。

　　4. cannot ＋动词＋形容词或副词＋ enough

　　在“ cannot……too…… ”结构中的 too 可换成 enough ， sufficient 或 sufficiently ； not 也可换成 never ， hardly ， scarcely 等否定词。例如：

　　You can never be strong enough. 强壮的身体有百利而无一害。

　　Drinking water can never be pure enough. 饮用水越纯越好。

　　5. cannot ＋动词＋ too many ＋可数名词 / too much ＋不可数名词，例如：

　　I think it right that one cannot learn too much knowledge. 我认为一个人的知识愈多愈好。

　　It is wrong to think that one cannot bear too many children. 认为一个人孩子生得愈多愈好是错误的。

　　6. It is impossible （ difficult ） to…… too…… ＝ cannot……too…… ，例如：

　　It is impossible to emphasize this point too much. （＝ One cannot emphasize this point too much. ）要特别强调这一点。

　　与 cannot……too…… 相似的结构主要有：

　　1. cannot help + doing ：该结构意为“禁不住做……”、“忍不住干……”，指“身不由己地去做某事”。例如：

　　We could not help thinking when we saw the Great Wall in China.

　　看到中国的长城，我们不禁浮想联翩。

　　I couldn't help crying when I heard the bad news. 听到那不幸的消息，我忍不住大哭起来。

　　“ cannot help but do sth. ”也表示“不得不、忍不住……”。例如：

　　We could not help but walk from dawn to dusk. 我们不得不从黎明走到黄昏。

　　Hearing the inspiring news， we couldn't help but cheer. 听到这个鼓舞人心的消息，我们不禁欢呼起来。

　　2. cannot but do sth ：该结构表示“不得不……”。例如：

　　I cannot but admire his courage. 我不得不钦佩他的勇气。

　　I couldn't but laugh on reading such a funny joke. 读到如此滑稽的笑话，我忍不住笑了。

　　在上面句式里，可以说 cannot 后面省略了 do anything .例如：

　　The prisoner could not （ do anything ） but hand in his knife. 那个犯人不得不交出刀子。

　　can but do sth. 表示“只得做某事”。例如：

　　The boy made an apology to his teacher， so the teacher could but give up the idea of punishing him. 那男孩向老师道了歉，老师只得打消惩罚他的念头。

　　类似这一结构的 cannot choose but to sth 也表示“不得不……”、“只得……”。例如：

　　It rained hard， so they couldn't choose but stay at home. 雨下得很大，他们只得呆在家里。

1．从句动作在主句动作前发生，只用 when。
①When he had finished his homework，he took a short rest．（finished先发生）当他完成作业后，他休息了一会儿。
②When I got to the airport，the guests had left．（got to后发生）当我赶到飞机场时，客人们已经离开了。
2．从句动作和主句动作同时发生，且从句动作为延续性动词时，when，while，as都可使用。
①When ／While ／As we were dancing，a stranger came in．（dance为延续性动词）当我们跳舞时，一位陌生人走了进来。
②When ／While ／As she was making a phonecall，I was writing a letter．（make为延续性动词）当她在打电话时，我正在写信。
3．在将来时从句中，常用when，且从句须用一般时代替将来时。
①You shall borrow the book when I have finished reading it．在我读完这本书后，你可以借阅。
②When the manager comes here for a visit next week，Ill talk with him about this．下周，经理来这参观时，我会和他谈谈此事。

、when用于表示“一……就……”的句型中（指过去的事情）。
sb．had hardly（＝scarcely） done sth．when．．．＝Hardly ／ Scarcely had sb．done sth．when．．．
①I had hardly ／scarcely closed my eyes when someone knocked at the door．＝Hardly ／ Scarcely had I closed my eyes when someone knocked at the door．我刚一闭上眼，就有人在敲门了。
②I had hardly ／scarcely entered my room when the telephone rang．＝Hardly ／Scarcely had I entered my room when the telephone rang．我刚一走进房门，电话就响了。