We _______ work very quickly.

A．don’t needB．needn’t toC．need not toD．don’t need to

D

解析試題分析: 此題重點考查動詞need的用法，它有兩個詞性，作為情態(tài)動詞時經(jīng)常用在否定句中，并且后跟動詞原形；作為實義動詞時后可跟名詞，動詞不定式，動詞的現(xiàn)在分詞（表示被動意義）,其否定形式要借助助動詞do的形式.根據(jù)語境可知此句的含義是我們沒有必要干的那么快.根據(jù)語境和need的基本用法,可知D為正確答案.
考點：need的基本用法。
點評：此題的關(guān)鍵要看怎樣區(qū)分need的詞性.A和D中的need是行為動詞,但作為行為動詞need的基本用法是need to do sth,A的答案是不對的;B和C都是情態(tài)動詞,而need作為情態(tài)動詞其后只能跟動詞原形,故其也是錯誤的,故選D.因此區(qū)分need的詞性是解題的關(guān)鍵,但要分析題干的基本結(jié)構(gòu).

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1 

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