Question

5．May 19th is China's Tourism Day，and when it comes，tourists are allowedto visit （visit） some tourist attractions for free．

Answer 1

分析 5月19日是中国的旅游日，当那一天到来，游客们被允许免费参观一些旅游景点．

解答 答案：to visit．结合句意are allowed这里是一般现在时的被动语态，表示允许某人做某事用allow sb to do sth，被动语态为sb be allowed to do sth，后加动词不定式，所给单词visit是动词参观，故答案是to visit．

点评 1．allow sth允许某事  I can't allow such a thing．我不允许发生这样的事． 2．allow doing sth允许做某事  We don't allow eating in the classrooms．（我们）不允许在教室吃饭． We don't allow smoking here．我们不允许在此抽烟． 3．allow sb to do sth允许某人做某事  Her father would not allow her to eat sweets．她父亲不允许她吃糖果．  They don't allow students to smoke in the class-room．他们不允许学生在教室抽烟． My parents don't allow me to stay out late．我父母不允许我深夜还留在外头． 4．allow sb sth 给予某人某物（尤指钱或时间）；让某人有（拥用或带有）某物 He allows his son too much money．他给他儿子的钱太多．