高一 英语 根据下面各题中划线的情态动词，判断说话人对句中动作 请详细解答,谢谢! (14 21:12:38)

Question

 
Students must listen to their teacher carefully in class.
A．许可        B．可能性            C．推测        D．要求

Answer 1

比较：
a:Students ought to listen to their teacher carefully in class.
b:Students must listen to their teacher carefully in class.
c:Students have to listen to their teacher carefully in class.
a句表示学生在上课时有仔细听课的义务，不含强迫之意。
b句表示学生必须在上课时仔细听课，含主观强制之意。
c句表示按照规章制度，学生在上课时有仔细听课的义务，含有外界强制之意。

Answer 2

选择D，学生上课必须要认真听老师讲课。根据句子意思做选择。

Answer 3

d

Answer 4

D