5．When the foreign guest arrived，I found him speaking good Chinese．I       his speech into Chinese the night before．（　　）
A．needn't translateB．didn't need to translate
C．needn't have translatedD．didn't need translating

分析 當(dāng)外賓到達的時候，我發(fā)現(xiàn)他的漢語講得很好．我前一天晚上不必把他的話翻譯成漢語．

解答 答案是B．本題考查need 的否定結(jié)構(gòu)．needn't do表示"（現(xiàn)在或?qū)恚?不必；didn't need to do過去不必…；needn't have done本不必…（事實上卻做了）；sth．need doing需要被…，D項結(jié)構(gòu)錯誤，主語為I；根據(jù)語境，因為外賓漢語講得流利，所以我"前一天晚上不必翻譯他的話"，故選B．

點評 本題考查need的否定結(jié)構(gòu)；要分清need的詞性和相關(guān)的特殊用法，如didn't need to do和needn't have done的區(qū)別、need to do 和need doing的區(qū)別．

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