人教版九年级全册unit7 Teenagers should be allowed to choose their own clothes.SectionA 1a-2d.第1课时课件(该课件内含频文件)(该课件包含单词语句听力)
1.Sixteen-year-olds should be allowed to get ears pierced. 应该允许16岁的青少年穿耳洞。
(1) should be allowed 是含有情态动词should的被动语态。其中,should 为情态动词,表示劝告、建议,意为“应该;应当”,其否定形式为should not/shouldn’t; allowed为allow的过去分词。含有情态动词的被动语态的结构为:情态动词+be+及物动词的过去分词。
eg: These flowers should be watered every day. 这些花应该每天浇水。
(2) be allowed to do sth. 意为“被允许做某事”。
eg: Little kids aren’t allowed to play with fire.小孩子不允许玩火。
(1)allow sb. to do sth. 允许某人做某事
eg: Please allow me to introduce myself.请允许我作自我介绍。
(2)allow doing sth. 允许做某事
eg: We don’t allow smoking in public.我们不允许在公共场所吸烟。