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nglish well, she often does more speaking and writing.為了把英語學(xué)好,她經(jīng)常多說多寫。1. 表目的He came to teach the little girl English. 他來給這個小女孩上英語課。(3) 不定式作定語時,一般可轉(zhuǎn)換為定語從句。I want to borrow a piece of paper to write on. 我想借張紙寫字。This is the best room for you to live in. 這是最適合你住的房間。I have something important to do. 我有些重要的事要做。Have you got anything to say? 你還有什么要說的嗎?She is the last to e. 她是最后一個到的。不定式作定語時,它的位置在它所修飾的名詞或代詞之后。 請你幫我提一下這個衣箱好嗎?She often helps her mother (to) clean their house. 她經(jīng)常幫助她媽媽打掃房子。(3) 動詞help之后,帶to或不帶to都可以。I saw him ing in. 我看見他正往里走。區(qū)別為:不定式表示動作發(fā)生了,側(cè)重全過程;現(xiàn)在分詞則表示動作正在進行。但當(dāng)這些動詞用于被動語態(tài)時,作主語補足語的不定式要帶to. 例如:He was seen to e into the classroom. 他被看見走進了教室。Don’t forget to let her leave earlier. 別忘了讓她早點走。We all know him to be a clever boy. 我們都知道他是一個聰明的孩子。 賓語 賓補Jim told him not to cry. 吉姆告訴他不要哭。My mother used to teach me how to read and write. 過去我母親常教我如何讀書寫字。(2) 在tell, show, teach, find out, decide, learn, forget等動詞之后,常用一個帶連接代詞或副詞的不定式作賓語。She thinks it important to study English well. 她認為把英語學(xué)好很重要。He found it very difficult to get to sleep.They refused to do so. 他們拒絕那樣做。They began to read and write. 他們開始讀和寫。3. 作賓語不定式作賓語用在及物動詞之后。Her dream is to be a lawyer. 她的夢想就是成為一名律師。2. 作表語不定式像名詞一樣,可以放在be動詞后面,形成表語。To see is to believe. (百聞不如一見。It is bad for your eyes to read in the sun. 在陽光下看書對你的眼睛有害。注意:在It is… to…”的句型中,it是形式主語,真正的主語是不定式;使用這種結(jié)構(gòu),可以避免句子的頭重腳輕。To walk to school takes me twenty minutes.(=It takes me twenty mi