13．The suspect caught by the police still refused to admitted his crime though________many times．（　�。�
A．questioningB．questioned
C．having questionedD．to be questioned

分析 被警察抓住的疑犯盡管被審訊了很多次，但依然拒絕承認(rèn)他的罪行．

解答 答案：B句中question與主語the suspect構(gòu)成動賓關(guān)系，要用被動語態(tài)；though連接讓步狀語從句，從句省略了相同的主語和系動詞，即though the suspect was questioned many times；句意表達(dá)的是過去發(fā)生的動作，不能用不定式來表示．故選B．

點評 過去分詞是非謂語動詞的一種，用法很靈活，分為簡單式done（表示與謂語同時或幾乎同時發(fā)生的動作）；完成式having been done（表示先于謂語的動作）．學(xué)習(xí)時，要把握其用法特征：表示被動和完成．同時還要注意區(qū)分現(xiàn)在分詞和不定式．

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