【正文】
中可以作主語、表語、賓語、定語和狀語.1). 作主語 例如:To learn English well is not easy. 或 It is not easy to learn English well. 動詞不定式作主語時,往往用it作形式主語,這種句型可歸納為下面的句型:It is + adj.+ 動詞不定式如果要說明不定式表示的動作執(zhí)行者,可以用for: It is + adj.+ for sb. to do sth.2). 作表語My wish is to bee a teacher.3). 作賓語 Most of us like to watch football matches.4). 作賓語補足語 He told me to be here on time.5). 作定語I have nothing to say about that thing.6). 作狀語He stopped to have a look.3. 動詞不定式的否定形式 動詞不定式的否定形式not + to + 動詞原形構(gòu)成 He asked me not to make such a mistake.4.