Unit7 Teenagers should be allowed to choose their own clothes.课文知识点全面讲解与练习Section A 1. I dont think sixteen-year-olds should be allowed to drive. 我认16岁的青少年不应该被允许开车。【解析1】在本句中，宾语从句的否定词not移到了主句的谓语动词上，我们称之“否定前移”。我认为你说不出那样的话（）I think yo cant say those words.（）I dont think you can say those words.拓展：在含有I think的主从复合句中，反意疑问句中的附加问句要与从句一致。 I dont think he was clever, was he?我认为你是正确的，不是吗？ 当主句的主语为第二、三人称时，反意疑问句中的附加问句要与主句一致。 He thinks you are right,doesnt he?他主为你是正确
