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B 若作定語的動詞不定式是不及物動詞 ,后必須要有介詞 . 2. 你有開門的鑰匙嗎 ? Have you got a key to unlock the door? 接下來要做的事就是粉刷墻壁 . The next thing to be done is to paint the wall. 被修飾的詞語是不定式的邏輯主語時 ,不定式用主動式 。過去分詞 不定式 ing 形式 非謂語動詞 動詞不定式 1. _____ late in the afternoon, Bob turned off the alarm. A. To sleep B. Sleeping C. Sleep D. Having slept 2. Robert is said _____ abroad, but I don’t know which country he studied in. A. to study B. to have studied C. is studying D. to have been studying 3. – Hi, Amy. Why are you so upset? I found the washing machine had _____ again. A. to be repaired B. repaired C. it repairing D. it repaired A B A (作用 ) (語態(tài) ) (時態(tài) ) 不定式的 作用 不定式的 時態(tài) 不定式的 語態(tài) 不定式 1. 主語 2. 賓語 3. 賓語補足語 4. 表語 5. 定語 6. 狀語 (一 ). 不定式用作主語 要在一天內(nèi)完成這個工作是不可能的 . To finish the work in one day is impossible. 對于外國人來說 , 要學(xué)好漢語很難的 . It’s difficult for foreigners to learn English well. 1. 不定式作主語時 ,可以用 it作形式主語 . It is important ______ T