高二選修7 unit 2 robots-grammar-預覽頁
【正文】 一般式 to do to be done 完成式 to have done to have been done 進行式 to be doing / 完成進行式 to have been doing / 當動詞不定式的邏輯主語是動詞不定式所表示的動作的執(zhí)行者時用主動語態(tài)；當動詞不定式的邏輯主語是動詞不定式所表達的動作的承受者時用被動語態(tài) 。 語態(tài)分為主動語態(tài)和被動語態(tài) ， 如下表所示 。 ． 3． 構成復合賓語： He wanted the letter to be typed at once. She didn’t like herself to be praised like that. 4． 構成復合謂語： The books are not allowed to be taken out of the room. 5． 作定語： Are you going to the meeting to be held in the teachers’ office? 6． 作狀語： She was too young to be assigned such work. 二 、 不定式有時還可以有完成式的被動式 ， 在句中作主語 、 賓語 、 定語 ， 或者構成復合賓語 、 復合謂語等 ， 如： It is a good thing for him to have been criticized.（ 主語 ） She preferred to have been given heavier work to do. (賓語 )） He thought it an honour to have been invited to the party. （ 復合賓語 ） The book is said to have been translated into many languages. （ 復合謂語 ） She was the first woman to have been elected to such a post. （定語） 三、不定式的主動形式表示被動 1．在 there be結構中。 enough…to…” 結構中。 例如： This is the best book to read (=for us／you to read)． The important thing to do is to lock the door when we leave the house． 7．一些作表語用的不定式的主動形式。 using B. maki
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