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His work has been finishedThe reason had been explained before they made their choices.情態(tài)動詞+被動語態(tài)This work can be easily done.Your work must be handed in tomorrow. 注意: 情態(tài)動詞的被動語態(tài)結(jié)構(gòu)為:情態(tài)動詞+be+過去分詞其時態(tài)及句型的變化僅由情態(tài)動詞完成,be+過去分詞部分不變。如: Tables can be made of 。 Tables could be made of stone at that 。(一般過去時) Can tables be made of stone? 桌子能用石頭制造嗎?(疑問句) 特殊情況的被動語態(tài) 主謂賓+省略to的不定式(即賓補):使役動詞、感官動詞(后接動詞原形) Eg. We hear him sing the same song all day.此類情況變?yōu)楸粍诱Z態(tài)時,原來省略的to一定要加上?! 〕R姸陶Z:make sb do sth →sb be made to do sth (主動語態(tài)不含to,被動語態(tài)必須帶to) hear sb do sth →____________________ see sb do sth →_____________________have sb do sth →_____________________ *特殊:let sb do sth →sb be let do sth (主動語態(tài)和被動語態(tài)都不含to) 練習(xí):He made the workers work 12 hours a day. ___________________________________ His mother mad