小編為備考的同學們整理了英語四級用法用法辨析,希望可以為大家?guī)韼椭?,預祝大家高分通過。
英語四級語法用法辨析:until 后接過去分詞 請看這道題,這個until 后要接過去分詞嗎? He is a man of few words, and seldom speaks until _________ to. A. spoken B. speaking C. speak D. be spoken
【分析】此題容易誤B,認為until 是介詞,后接動詞時用動名詞形式。其實,此題應選A,until spoken to 為 until he is spoken to 之省略。句意為“他是個沉默寡言的人,別人不同他說話,他很少同別人說話”。按英語習慣,一些表示時間、地點、條件、方式、 讓步等的狀語從句,若其主語與主句主語一致,且從句謂語包含動詞be, 那么可將從句的主語和動詞be省略: You must study hard while (you are) young, or you will regret when (you are) old. 趁年輕時要努力學習,不然到老了你會后悔的。 I won't go unless (I am) invited. 我不會去, 除非請我。 Look out for cars when (you are) crossing the streets. 過馬路時要注意汽車。
(1) If carefully _________, the experiment will be successful. A. do B. does C. done D. doing 答案選C,可視為 if it is carefully done 之省略。
(2) The research is so designed that once _________ nothing can be done to change it. A. begins B. having begun C. beginning D. begun 答案選D,可視為 once it is begun 之省略。