Question

--- He looks so tired. What’s wrong?
--- Nothing serious. He just stayed up last night, ___________his papers.

A．to prepare

B．having prepared

C．prepared

D．preparing

Answer 1

D

試題分析：整個句子已經(jīng)有謂語動詞，所以該空應(yīng)該用非謂語動詞，又因為He與prepare之間是主動關(guān)系或伴隨狀語，故排除C；選項A表目的或?qū)�來，但是前面不用加逗號，故排除A；選項B表示它的動作發(fā)生在謂語動詞之前，顯然是錯誤的，故排除A，所以選D
點評：非謂語動詞是高考熱點也是考生比較難以理解的語法項目，故考生需要做一些這方面的試題來加以鞏固。
即學(xué)即練：_________attentively，he forgot the time for lunch．
A. to Read      B. having read          C. Read     D. Reading
解析：D Reading attentively與he之間是主動關(guān)系，Reading attentively作原因狀語。句意：由于在專心讀書，他忘了吃午飯的時間。