Question

14．我认为家长们不应该阻止孩子参加课外活动．
Idon't think parents should stop their childrentaking part in after-class activities．

Answer 1

分析 don't think  parents should stop their children．

解答 答案：don't think  parents should stop their children，结合句意是表达客观事实用一般现在时，表示认为用think，后加宾语从句，主语parents，应该should，情态动词后加动词原形，阻止某人做某事stop sb doing sth，故 think  parents should not stop their children，这里将从句的否定转移到主句，主语I，故借助于do构成否定，故答案是don't think  parents should stop their children．

点评 将think，believe，suppose，expect，fancy，imagine等动词后面宾语从句的否定词转移到主句中，即主句的谓语动词用否定式，而从句的谓语动词用肯定式．
　 I don't think I know you．我想我并不认识你．
　 I don't believe he will come．我相信他不回来．
注意：若谓语动词为hope，宾语从句中的否定词不能转移．
　 I hope you weren't ill．我想你没有生病吧．