【正文】
doing 形 式 主 動 被 動 to be done to have been done 1. I asked him to attend the meeting. 2. He seems to be reading English poems. 3. He is said to have translated the book into English last year. ( to attend the meeting 動作發(fā)生在 ask 后 ) ( seem 和 read 同時發(fā)生 , 強調(diào)動作正在進行) ( translate the book 發(fā)生在 be said 之前) The question is very difficult to answer. The problem is difficult to deal with. + be +adj. +to do 能用于此句型的形容詞有: difficult ,easy, fortable ,fit, hard, pleasant, tiresome(使人疲勞的 ) ,interesting, nice , heavy, dangerous, light, important, etc. 主動形式表被動意義的不定式 The box is light enough to carry. The river water is warm enough to swim in. +be +adj. + enough +to do The books seemed too heavy to carry. The ice is too thin to skate on. +be +too +adj. +to do 1. Last summer I took a course on____. A. how to make dresses B. how dresses be made C. how to be made dresses D. how dresses to be made 2. I’ve worked with children before, so I know what _____ in my new job. A. expected