【正文】
It’s one’s turn to do sth Take turns to do sth. It takes sb some time to do sth It costs sb some money to do sth 主語 + adj to do sth cost me 5 yuan _____ (buy) the book yesterday. will take him 8 minutes ____ (get) there. take turns ____ (clean) the classroom. 4. It’s already time _____(stop) _____(discuss) 5. It’s my duty ____ (protect) you 13. 變被動語態(tài) ① make sb do sth. →sb be made to do sth. He makes us laugh. → We are made to laugh by him ② see sb do sth. →sb be seen to do sth. I often see him play games. → He is often seen to play games by me. ③ hear sb do sth. →sb be heard to do sth. I always hear my friend sing Engish songs. →My friend is always heard to sing English songs he was seen ____ (play) puter games. 2. Many children are made _____ what they’re not interested in . A. do B. doing C. to do D. did 3. Someone was heard ____ (knock) at the door just now. 1. She needs some paper to _____ . in with on me a pen _______. A. write B. to write C. write with D. to write with 3. Shopping with me? Sorry. I have a lot of clothes ____ . wash be washed 8. 在學習不定式中 ,我們需要注意些什么呢 ? : to do 否定 : not to do 2. to do 是非謂語動詞 ,沒有人稱和數(shù)的變化 ,不能充當謂語 . 但可以和系動詞構成系表結構 .如 : My dream is to be a doctor. ,接 to do作賓語補足語時 ,必須 省去 to.如 : Do you often see him play tennis on the playground? 后置定語時 ,要特別注意動詞的不定式短語中介詞要不要省去 .如 : The old man have no house to live in.