1. How beautifully she sings! I have never heard _____ voice.
A. a better B. a best
C. the better D. the best
【陷阱】容易誤選D，認(rèn)為最高級(jí)前要用定冠詞。
【分析】其實(shí)此題最佳答案為A，該句可視為...I have never heard a better voice than her voice 之省略，全句句意為"她唱得多好?。∥覐奈绰犨^她這么好的聲音"。請?jiān)倏匆韵骂愃频膶?shí)例：
He is fine, never better. 他很好，比以往任何時(shí)候都好。
This bird is really lovely. I've never seen a finer one. 這只鳥真可愛，我從未見過這樣好看的鳥。
比較以下試題，情形也大致相同：
(1) "I've never found a better job." "_______."
A. I don't think so B. Too bad
C. Congratulations D. Don't worry
答案選C，I've never found a better job可視為 I've never found a better job than this job 之省略，句意為：我從來沒有找到比這份工作更好的工作，即這是我所找到的最好的工作。
(2) "What do you think of the service here?" "Oh, ______. We couldn't have found a better place."
A. too bad B. sorry
C. wonderful D. impossible
答案選 C。We couldn't have found a better place 可視為We couldn't have found a better place than this place，其意為"我們不可能找到一個(gè)比這個(gè)地方更好的地方"，即"這是我們所能找到的最好的地方"。
(3) Boris has brains. In fact, I doubt whether anyone in the class has _____ IQ.
A. a high B. a higher
C. the higher D. the highest
答案選B，句意為"……我懷疑班上有沒有哪個(gè)人比他智商更高"，即"我認(rèn)為他可能是班上智商最高的"。
(4) . How cold it is! We've never had ______ this winter.
A. the colder day B. a cold day
C. the coldest day D. a colder day
答案選D。句意為"今年冬天我們還從未遇上過這樣冷的日子"。

2. Professor White has written some short stories, but he is _____ known for his plays.
A. the best B. more
C. better D. the most
【陷阱】容易誤選D。
【分析】此題首先不宜選B或D，因?yàn)?well known 的比較級(jí)和最高級(jí)通常是 better known和best known，有時(shí)也可以是 more well known 和 most well known，但通常不能是 more known 和 most known。至于是選A還是C，這就要看語境。由于句中涉及的只有 stories 和 plays 兩個(gè)對象，故應(yīng)選比較級(jí)。

3. You are _____ careful than your brother. You two can't do the work that needs care and skill.
A. not more B. no more
C. not less D. no less
【陷阱】容易誤選A。
【分析】要做對此題，首先要正確理解以下結(jié)構(gòu)的含義：
not more ... than = 不如……
no more ... than = 和……一樣不 (否定兩者)
not less ... than = 不如……不 (即指不如 less 后形容詞的反面)
no less ... than = 和……一樣 (肯定兩者)
比較以下各句的意思：
You are more careful than he is. 你比他仔細(xì)。
You are not more careful than he is. 你不如他仔細(xì)。
You are no more careful than he is. 你和他一樣不仔細(xì)。
You are less careful than he is. 你不如他仔細(xì)（你比他粗心）。
You are not less careful than he is. 你比他仔細(xì)（你不如他粗心）。
You are no less careful than he is. 你和他一樣仔細(xì)。
通過以上分析，再結(jié)合句子語境，可知此題最佳答案為B。

4. "Oh, how fat he is!" "But I think he is ____ than fat."
A. short B. shorter
C. more short D. shortest
【陷阱】容易誤選B。認(rèn)為 short為單音節(jié)形容詞，故用-er構(gòu)成比較級(jí)。
【分析】其實(shí)正確答案應(yīng)是C。要弄清此問題，得先從比較句型的兩種不同類型說起：
(1) 異類同質(zhì)比較：即指兩個(gè)不同的人或事物(異類)在同一方面(同質(zhì))進(jìn)行比較。如：
My room is smaller than yours. 我的房間比你的小。
Our country is more powerful than theirs. 我們的國家比他們的國家更強(qiáng)大。
(2) 同類異質(zhì)比較：即指同一個(gè)人或事物(同類)在兩個(gè)不同的方面(異質(zhì))進(jìn)行比較，這類句子常譯為"(更多的)是……，而不是"、"與其……不如……"等。如：
He was more lucky than clever.他是靠運(yùn)氣而不是靠聰明。
She was more surprised than angry. 她感到更多的是驚訝而不是生氣。
This is more a war movie than a western. 這更應(yīng)當(dāng)說是一部戰(zhàn)爭片，而不是西部片。
按英語習(xí)慣，在進(jìn)行同類異質(zhì)比較時(shí)，只能用more構(gòu)成比較級(jí)，不能用-er形式，即使是單音節(jié)詞也是如此。