6. Jim is ______ person, and everyone is willing to be ______ with him.

A. so kind a, friends                                  B. so a kind, friends

C. so kind a, friend                                    D. so a kind, friend

【陷阱】誤選C或D。認為 friend要用單數(shù)。

【分析】其實此題最佳答案為A。so kind a person相當(dāng)于such a kind person，注意兩者中冠詞的位置不同。be friends with是習(xí)語，意為“與……友好”、“跟……做朋友”，與之同義的類似地還有make friends with。值得說明的是，這類短語中的名詞總是用復(fù)數(shù)，即使句子主語為單數(shù)也是如此。如：

He is friends with me. 他與我是朋友。

He has made friends with everyone here. 他與這兒的每個人交上了朋友。

7. We already have ______ pencils, but we need two ______ pens.

A. dozen of, dozen                                    B. dozens of, dozens

C. dozens of, dozen                                   D. dozens of, dozen of

【陷阱】誤選 B。

【分析】此題最佳答案為C。關(guān)于dozen的復(fù)數(shù)是否加詞尾-s的問題比較復(fù)雜，大致原則是：

(1) 當(dāng)它與具體數(shù)字連用時，既不加復(fù)數(shù)詞尾-s，也不后接介詞of。盡管有的詞書也有 two dozen of 這樣的用例，但這已屬過時用法，在考試中應(yīng)避免，如1992年全國高考有一道單項選擇題就認為two dozen of為錯誤選項：

Shortly after the accident, _____ police were sent to the spot to keep order.

A. dozens of                                             B. dozens       C. dozen of     D. dozen [D]

(2) 當(dāng)它不與具體數(shù)字連用，而是表示不確定的泛指數(shù)時，則不僅要加復(fù)數(shù)詞尾-s，而且要后接介詞 of，此時可將dozens of(許多，幾十)視為習(xí)語。如：

I’ve been there dozens of times. 我去過那兒幾十次。

She’s got dozens of boy-friends. 她的男朋友很多。

下面一例中的dozens加了復(fù)數(shù)詞尾-s也屬為似情況：

Pack them in dozens. 按打裝袋吧。

(3) 當(dāng)與 a few, several 等數(shù)目不很具體的詞連用時，加不加復(fù)數(shù)詞尾-s均可，但需注意：不加復(fù)數(shù)詞尾-s時，其后的介詞of可以省略；加詞尾-s時，其后介詞 of不能省略。如：

several dozen (of) pencils=several dozens of pencils幾打鉛筆

注：英語較少使用many dozen的說法，要表示類似意思可用dozens of。

(4) 當(dāng)它后面的名詞受 the, these, those 等特指限定詞修飾時，或其后的接的是us, them這樣的人稱代詞時，則此時必須用介詞 of。如：

two dozen of these eggs 兩打這種雞蛋

three dozen of them 它們中的3打

注：score, hundred, thousand, million等也具有以上類似用法。

8. She raised her finger to her lips as _____ for silence.

A. an idea                                                 B. a mark

C. a sign                                                   D. a word

【陷阱】容易誤選B。

【分析】應(yīng)選C，sign與mark的區(qū)別是：sign 的意思是“跡象”、“征兆”gesture or movement made with the hand, head, etc, used to give information, a command, etc(用手或頭等做出示意動作以傳遞信息或命令等)，mark 的意思是 written or printed symbol or figure, line etc made as signor an indication of sth(書寫與印刷的符號或圖、線等記號)。根據(jù)此二詞的語義區(qū)別以及常識可知答案為C。類似地，下面兩題的答案也是C：

(1) Those black clouds are a sure _____ that it’s going to rain.

A. thing                                                   B. mark

C. sign                                                     D. one

(2) Just as a famous Chinese saying goes, a timely heavy snow is a ______ of good harvest next year.

A. mark                                                   B. track

C. sign                                                     D. appearance

但是，下面一題卻不能選sign，也不能選mark，而選symbol(象征)：

The lion is considered the king of the forest as it is a(n) _____ of courage and power.

A. example                                               B. sign

C. mark                                                    D. symbol

順便說一句，在近幾年的高考中像這類結(jié)合詞義區(qū)別以及語境和生活常識進行考查的試題經(jīng)常出現(xiàn)，同學(xué)們需引起注意。

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