Question

15．應該做出決定不允許在室內抽煙．
A decision shouldbe made not to allow smoking indoors．

Answer 1

分析 be made not to allow smoking．

解答 答案：be made not to allow smoking．表示做決定做某事用make a decision to do sth．否定就是做決定不做某事make a decision not to do sth主語是a decision，是make 的承受者，構成被動語態(tài)，加上前面的情態(tài)動詞should，這里用情態(tài)動詞的被動語態(tài)---情態(tài)動詞+be+過去分詞，make的過去分詞made，故be made not to，允許做某事allow doing sth，吸煙smoke，去e加ing，故答案是be made not to allow smoking．

點評 這里是情態(tài)動詞被動語態(tài)的構成，理解掌握各種類型的被動語態(tài)，要學會分析主謂關系．