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en to go there.(不定式作表語)二、動詞不定式的時態(tài)和被動形式 動詞不定式是非謂語動詞的一種,有不定式符號(to)加動詞原形構(gòu)成。不定式的形式有五種:1. 一般式to do例如:I like to read English.2. 進行式to be doing例如:He seems to be reading something at that time.3. 完成式to have done例如:He seemed to have cleaned the room.4. 被動式to be done例如:The work is to be done soon.5. 完成的被動式to have been done例如:The boy is said to have been sent to hospital yesterday.一、例題選講例1 ________ is one thing, ________ is quite another. A. To say, to do B. Say, do C. Said, did D. To say, do答案:A 提示:用動詞不定式作主語。例2